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~~on April 19th~~

How Much Do You Know About Lawnmower Batteries?

When choosing the ideal battery for your lawn mower, we need to understand the subtle differences between different battery types and their corresponding specifications. Lawnmower batteries, distinctly smaller and less powerful than car batteries, are specifically designed to meet the lower power demands of mowing equipment. These batteries must be compact and robust enough to handle the varied environments typical of lawn care. Recognizing the distinctions in voltage requirements, chemical compositions, and terminal types is not only important for efficient operation but also for ensuring safety and prolonging the life of both the battery and the mower itself. Classifying batteries and understanding how to maintain them, helps users quickly identify the correct battery type and choose the battery that suits their lawn mower.

Catalog

1. What Size Battery Does a Lawnmower Need?

2. What is the Voltage of the Lawnmower Battery?

3. Lawn Mower Battery Chemistry Types and Terminal Types

4. How Much Starting Current Does a Lawnmower Battery Draw?

5. How to Charge Lawnmower Batteries and Choose the Right Charger？

6. Common Specifications and Options for Lawnmower Starting Batteries

7. How to Safely Start a Lawnmower Battery from a Car?

8. Battery Care Guide

Figure 1: Lawnmower

What Size Battery Does a Lawnmower Need?

When choosing a lawn mower battery, the first thing to recognize is the difference between a lawn mower battery and a car battery. While they both use chemical reactions to generate electricity to start and provide power, lawn mower batteries are typically smaller because a lawn mower's power and starting needs are much lower than a car's. Lawn mower batteries are designed to be more compact and have a relatively small capacity to adapt to the special needs of the environment in which they are used.

The Battery Council International (BCI) categorizes batteries by size, voltage, and capacity. For lawnmowers, the U1 category is common. This categorization helps users and technicians identify and select the correct battery quickly. The U1 category includes two types: U1L and U1R, distinguished by the placement of their positive terminals—left for U1L and right for U1R.

When buying a battery, it’s important to match the terminal type and position with your lawn mower's battery compartment. Using a battery with the wrong terminals can complicate installation and potentially harm the mower's electrical system. Always check the battery’s model, size, and terminal orientation to ensure compatibility with your mower, avoiding any issues with the electrical setup.

Figure 2: Lawnmower Battery

What is the Voltage of the Lawnmower Battery?

Most riding mowers require a 12-volt battery, while smaller, push mowers often operate on 6 volts. To confirm the type of battery your mower needs, you should first check the voltage rating on the old battery, consult the user manual, or visit the manufacturer’s website. Given that most lawn mower manufacturers now use 12V systems, this discussion will focus primarily on 12-volt batteries.

The correct battery voltage affects whether your lawn mower can run efficiently. The right voltage level ensures smooth engine startup, which directly affects the engine's ignition and power output during the combustion process. Additionally, if the battery operates within the recommended voltage range, its lifespan will significantly extend, saving costs associated with frequent replacements. Adequate voltage is also essential for optimal cutting blade performance, ensuring even and tidy lawn trimming.

However, choosing an incorrect battery voltage can lead to operational issues. If the voltage is too low, the mower's motor may not receive continuous power, putting excessive strain on mechanical parts, and leading to accelerated wear or damage. Conversely, too high a voltage can cause the motor to overheat, negatively impacting the mower's lifespan. Using a safe and compliant battery also reduces the risk of accidents caused by battery failures during mowing, ensuring operational safety.

Therefore, selecting the right lawn mower battery involves more than just picking a new battery, it is a critical process that affects equipment performance, cost-effectiveness, and safety. By ensuring the battery voltage matches your mower's requirements, you can enhance mowing efficiency and reduce maintenance costs and safety risks over time.

Figure 3: U1R Battery

Lawn Mower Battery Chemistry Types and Terminal Types

Two Chemical Types of Batteries

When selecting a new lawn mower battery, it's essential to understand the two primary types of battery chemistries: lithium and lead acid. Lithium batteries, particularly Lithium Iron Phosphate (LiFePO4) types, incorporate a Battery Management System (BMS). This system safeguards the battery during use by preventing overcharging, discharging, overcurrent, short-circuiting, and overheating, thus maintaining stable battery operation. Although lithium batteries can be charged by the mower’s alternator, caution is needed when using a charger. Chargers designed for older lead-acid batteries or even some modern ones may harm the BMS, potentially voiding the warranty. In contrast, chargers with a specific lithium battery charging mode are better suited as they charge lithium batteries efficiently and safely.

Lead-acid batteries are heavier but excel in startup applications due to their reliability, robustness, and tolerance to charging conditions. These batteries are more affordable but have limitations like capacity loss under heavy discharge and a shorter life span if subjected to numerous charge-discharge cycles. Types of lead-acid batteries include wet/flooded, enhanced flooded, Absorbed Glass Mat (AGM), and gel batteries. AGM and gel batteries are preferred for lawnmowers and other gardening tools due to their leak-proof and maintenance-free features.

Terminal Type

The type and orientation of the terminals are also a factor we need to consider. A mismatch in terminal type or orientation can complicate connections, sometimes necessitating the use of extension cables or terminal adapters. It's best to purchase a battery with the same terminal type and orientation as the original.

How Much Starting Current Does a Lawnmower Battery Draw?

Cold Starting Current

Lawn mower batteries also differ in terms of startup current, specifically Cold Cranking Amps (CCA). CCA measures a battery's ability to perform in cold temperatures. Unlike car batteries, lawn mower batteries generally have lower CCA requirements, with a minimum CCA of about 145 necessary for most mowers. You can verify the required CCA for your mower in the user manual or on the manufacturer's website. CCA represents the maximum current a new fully charged 12V lead-acid battery can deliver at 0°F (-18°C) for 30 seconds without the voltage dropping below 7.2V.

Battery Capacity

Battery capacity, measured in Ampere-hours (Ah), indicates how much current a battery can provide over a specific period under standard conditions (80°F or about 25°C). For lead-acid batteries, this is typically rated over 20 hours with the voltage not dropping below 10.5V. However, as starter batteries, their capacity is often rated for 10 hours since these batteries are not designed for deep discharge.

Reserve Capacity

Reserve Capacity (RC) is another important metric, indicating how long a battery can deliver a current of 25A at a specified temperature (usually 80°F or about 25°C) before the voltage falls below a critical level (10.5V for lead-acid batteries). RC is a non-negligible factor in equipment circuits such as marine, RV, or solar systems that require deep circulation. However, with lawnmowers and lawn tractors, it’s not that important.

How to Charge Lawnmower Batteries and Choose the Right Charger？

Choosing the correct charging method and equipment will help your lawn mower’s battery run efficiently. While the device is running, the onboard alternator and charge controller (if equipped) work together to charge the battery and maintain it at full charge. However, when we need to charge the battery separately, we need to understand the battery's charging needs in advance and choose a suitable charger.

Lead-acid batteries should use a dedicated lead-acid battery charger that allows the user to select different charging modes based on battery type (such as AGM, gel, or wet/flooded). These chargers are usually equipped with temperature probes that can automatically adjust the charging voltage according to the ambient temperature, optimizing the charging process and thereby increasing battery life. During the charging process, lead-acid batteries release hydrogen and oxygen, so be sure to charge in a well-ventilated area to avoid possible safety risks caused by gas accumulation.

Lithium batteries should use a charger designed specifically for lithium batteries, or a universal battery charger with a lithium battery charging mode to ensure safe and effective charging. Lithium batteries have a low self-discharge rate and can remain charged for a longer period, making it more convenient to keep the battery charged during inactive seasons such as winter.

Before charging, appropriate safety equipment should be worn, including acid-resistant goggles, safety gloves, as well as recommended safety shoes, and an acid-resistant lab coat or apron. Next, locate the battery and connect the charging cables correctly, the red cable to the positive terminal and the black cable to the negative terminal, then plug the charger into an electrical outlet. Depending on the type of battery, adjust the charger to the appropriate voltage and ampere settings to ensure a safe and efficient charging process.

When choosing a lawn mower battery charger, make sure the charger matches the voltage and type of battery. Considering that most riding lawnmowers use 12-volt flooded lead-acid batteries, choosing a charger with the right amperage can effectively shorten charging time and improve efficiency.

Finally, when the lawn mower is not used for an extended period, such as in winter, it should be fully charged and connected to a battery maintainer to maintain battery status. When storing the battery, it should be placed at room temperature or slightly lower temperature, and the negative cable should be disconnected to extend the service life of the battery. AGM batteries can be stored for at least three months, while lithium batteries can be stored for up to six months. These measures can effectively protect the battery, extend its service life, and provide stable power support for the long-term operation of the equipment.

Common Specifications and Options for Lawnmower Starting Batterie

Battery Size	Dimensions (inches/mm)	Capacity	CCA	Weight
U1 & U1R	7.75 x 5.1875 x 7.3125 197 x 132 x 186	35 Ah (20h)	300-320	22-26 lbs 10-11.8 kg
YTX5L-BS	4.4375 x 2.75 x 4.125 113 x 70 x 105	4 Ah (10h)	70-80	3.3-4.5 lbs 1.5-2 kg
YTX9-BS	5.875 x 3.4375 x 4.125 150 x 87 x 105	6-8 Ah (10h)	120-180	6-8 lbs 2.7-3.7 kg
YTX12-BS	5.875 x 3.5 x 5.125 150 x 88 x 130	10 Ah (10h)	160-210	7-10 lbs 3.1-4.5 kg
YTX14-BS	5.875 x 3.4375 x 5.75 150 x 87 x 146	12-14 Ah (10h)	190-235	8-11 lbs 3.6-5.0 kg
YTX20L-BS	6.875 x 3.4375 x 6.125 175 x 87 x 155	14-20 Ah (10h)	220-330	11-14 lbs 5.0-6.4 kg
YTX24HL-BS	8.0625 x 3.4375 x 6.375 205 x 87 x 162	21 Ah (10h)	300-350	13-18 lbs 5.9-8.2 kg
YTX30L-BS	6.5625 x 4.9375 x 6.875 166 x 126 x 175	30 Ah (10h)	360-400	17-22 lbs 7.7-10 kg

Chart 1: Features and Specifications of the Most Popular Lawn Mower Batteries

Choosing the right starting battery for lawnmowers and similar equipment is crucial for optimal performance and longevity. Understanding the specifications and applications of different batteries helps ensure you select the best option for your needs.

Figure 4: U1/U1R Batteries

Model	Battery Type Cell Type	Capacity (Ah) Discharge Characteristics	Weight (lbs/kg) Review
AJC U1-300	Dual Purpose AGM	(18Ah?) 300 CCA	14.08 lbs; 6.4kg -
Casil CA12330	Deep Cycle AGM	33Ah -	19.84 lbs; 9kg -
Chrome U1 Battery	Deep Cycle AGM	35Ah 525 Amps (5 s)	23.5 lbs; 10.7 kg -
Deka 8AMU1R	Starting AGM	- 320 CCA; 45 min RC (25 Amps, down to 10.5V)	25 lbs; 11.3 kg -
Universal UB12350	Deep Cycle	Universal UB12350	Deep Cycle
AGM	35Ah	AGM	35Ah
315 CCA; 18 Amps, 60 minutes, down to 10.5 volts	24.4 lbs; 11.1 kg	315 CCA; 18 Amps, 60 minutes, down to 10.5 volts	24.4 lbs; 11.1 kg
-		-
VMAXTANKS V35-857	Deep Cycle	VMAXTANKS V35-857	Deep Cycle
AGM	35Ah	AGM	35Ah
300 CCA; 75 min RC (25 Amps, down to 10.5V)	25 lbs; 11.3 kg	300 CCA; 75 min RC (25 Amps, down to 10.5V)	25 lbs; 11.3 kg
Review		Review
Everlast 12350DC-NB	Deep Cycle AGM	35Ah -	23.5 lbs; 10.7 kg -
ExpertPower EP1250	Deep Cycle LiFePO4	50Ah 100 Amps for 10 seconds	13 lbs; 5.9 kg Review
ExpertPower EXP12330	Deep Cycle AGM	33 (10h) 21.09 Amps, 60 minutes, down to 10.5 volts	23.8 lbs; 10.8 kg Review
ExpertPower EXP35-Gel	Deep Cycle Gel	35Ah -	22.82 lbs; 10.35kg -
Interstate Batteries DCM0035	Deep Cycle AGM	35Ah -	22.9 lbs; 10.4 kg -
Mighty Max ML35-12	Deep Cycle AGM	37Ah 330 Amps (5 s); 17.2 Amps, 60 minutes, down to 10.5 volts	23.1 lbs; 10.5 kg Review
Mighty Max ML35-12Gel	Deep Cycle Gel	35Ah 350 Amps (5s); 17.4 Amps, 60 minutes, down to 10.5 volts	23.1 lbs; 10.5 kg -
Mighty Max ML35-12Li	Deep Cycle Lithium	35Ah -	10.0 lbs; 4.53kg -
Mighty Max ML-U1-CCAHR	Dual Purpose AGM	18Ah (10h) 320 CCA; ~20 Amps, 30 min, down to 9.6 volts	14.57 lbs; 6.6 kg -
MotoBatt MBU1-35	Deep Cycle AGM	35Ah -	26 lbs; 11.8 kg -
Neptune T12-35NB	Deep Cycle Gel	35Ah -	23.5 lbs; 10.65 kg -
Nermak Model:1250	Deep Cycle Lithium	50Ah 50A max. cont., 100A <5sec	10.6 lbs; 4.8kg
NPP NP12-35Ah	Deep Cycle AGM	35Ah -	23.1 lbs; 10.5 kg -
Power-Sonic PS-12350	Deep Cycle AGM	35Ah 350 Amps (10 s); 25 Amps, 60 minutes, down to 9 volts	24.7 lbs; 11.2 kg -
PowerSource U1-35	Deep Cycle AGM	35Ah -	25 lbs; 11.3 kg -
PowerStar PS12-35-D	Deep Cycle AGM	35Ah -	23 lbs; 10.4 kg -
Renegade U1-35-WS	Starting AGM	35Ah 400+ CCA	25 lbs; 11.3 kg -
Roypow S1230	Deep Cycle Lithium	30Ah 30Amps max. cont.	8.8 lbs; 4 kg -
SigmasTek SP12-35	Deep Cycle AGM	35Ah -	24.7 lbs; 11.2 kg -

Chart 2: The Most Popular U1/U1R Batteries and Specifications

Take the BCI Group U1 and U1R batteries, for example. These are designed for general or deep-cycle use, measuring approximately 7 3/4 x 5 3/16 x 7 5/16 inches. The U1 has its positive terminal on the left, while the U1R has it on the right, making it versatile for various equipment layouts. These batteries usually have a capacity of 33 to 37 amp-hours (Ah) and weigh between 23 and 26 pounds. They offer a cold-cranking amp (CCA) range of 300 to 320, suitable for applications that require reliable starting power. In high-demand situations, certain models can deliver up to 500 amps for quick starts within 3 to 5 seconds.

Figure 5: YTX30L-BS battery

Model	10h Capacity (Ah)	CCA (Amps)	Weight (lbs/kg)
Banshee DLFP30-HL	12.5	625 (Lithium)	6.3 lbs; 2.86 kg
Banshee YTX30L-BS	28	350	22 lbs; 9.97 kg
Chrome 30L-BS Zipp	30	385	-
Chrome YTX30L-BS	30	385	19.8 lbs; 8.97 kg
DEESPEAK DS-30L-BS	16	720 (Lithium)	8.2 lbs; 3.71 kg
Energizer TX30L	30	385	21.6 lbs; 9.8 lbs
Mighty Max YTX30L-BS	30	385	21.4 lbs; 9.7 kg
MMG YIX30L-BS MMG-7	-	480 (Lithium)	4.18 lbs; 1.9 kg
Neptune YTX30L-BS	30	290	19 lbs; 8.61 kg
NOCO NLP30	7.8	700 max. (Lithium)	5.0 lbs; 2.27 kg
Weize YTX30L-BS	30	385	17.7 lbs; 8.1 kg
PowerStar YTX30L-BS	30	385	-
TPE YTX30L-BS	16	720 (Lithium)	7.28 lbs; 3.3 kg
UPLUS YTX30L-BS	30	400	20.7 lbs; 9.38 kg
Yuasa YUAM22H30 YB30L-B	30	300	13.22 lbs; 6.0 kg
Yuasa YUAM6230X YIX30L-BS	30	385	22 lbs; 9.97 kg

Chart 3: The Most Popular Lead-acid and Lithium YTX30L-BS Batteries

For larger equipment, consider the YTX30L-BS battery, which is ideal for bigger motorcycles or power sports equipment. It's larger, about 6.5625 x 4.9375 x 6.875 inches, and optimized for better starting and cranking performance. The lead-acid version has a CCA rating from 280 to 385 amps, while the lithium version can provide 480 to 720 amps, demonstrating excellent cold-start capabilities. These batteries have a 10-hour capacity typically ranging from 28 to 30Ah, with lithium versions offering 10 to 20Ah, suitable for high-performance needs.

Figure 6: YTX24HL-BS Batteries

Model	Chemistry	10h Capacity (Ah) CCA (Amps)	Weight (lbs/kg) Review
AJC YTX24HL-BS Battery	AGM	- 350	15.9 lbs; 7.2 kg -
Banshee YTX24HL-BS	AGM	24 412	18 lbs; 8.15 kg -
Chrome YTX24HL-BS Battery	AGM	21 300	13.1 lbs; 5.93 lbs -
Chrome YTX24HL-BS Pirate	AGM	21 300	13.1 lbs; 5.93 lbs -
Chrome YTX24HL-BS Zipp	AGM	21 300	13.1 lbs; 5.93 lbs -
Energizer TX24HL Battery	AGM	21 350	16 lbs; 7.25 kg -
Interstate YTX24HL-BS	AGM	21 350	15.4 lbs; 7.0 kg -
Mighty Max YTX24HL-BS	AGM	21 350	15 lbs; 6.78 kg -
Mighty Max YTX24HL-BS Gel	Gel	21 350	14.35 lbs; 6.5 kg -
MMG YTX24HL-BS MMG-6	Lithium	- 420	3.09 lbs; 1.4 kg -
PowerSource YTX24HL-BS	AGM	22 350	17.8 lbs; 8.06 kg -
PowerStar HD YTX24HL-BS	AGM	22 350	15.8 lbs; 7.17 kg -
Protek YTX24HL Gel	Gel	21 350	17 lbs; 7.7 kg -
Sigmastek STX24HL-BS	AGM	22 350	15.7 lbs; 7.1 kg -
ThrottleX ADX24HL-BS	AGM	21 350	19 lbs; 8.6 kg -
Upstart YTX24HL-BS Battery	AGM	21 -	15.18 lbs; 6.9 kg -
Yuasa YTX24HL-BS Battery	AGM	21 350	17.44 lbs; 7.9 kg -

Chart 4: The Most Popular Lead-acid and Lithium YTX24HL-BS Batteries and Specifications

The YTX24HL-BS battery is a good choice for smaller, high-performance devices. It's relatively compact, measuring 8.0625 x 3.4375 x 6.375 inches, with a 10-hour capacity of around 21Ah. Its CCA rating varies from 260 to 350 amps, and the lithium version can reach up to 420 amps, perfect for motorcycles and snowmobiles needing quick, high-current starts.

Figure 7: YTX20L-BS Batteries

Model	10h Capacity (Ah)	Model	10h Capacity (Ah)
Antigravity AG-ATX20-RS	10	680 (lithium)	3.8 lbs; 1.73 kg
Antigravity ATX-20-HD	15	780 (Lithium)	5.18 lbs; 2.35 kg
Banshee 20HL-BS	18	500 (Lithium)	4.95 lbs; 2.24 kg
Banshee YTX20L-BS	18	310	18 lbs; 8.16 kg
Battanux YTX20L-BS	20	330	13.9 lbs; 6.3 kg
Battery Tender BTL20A360CW	6.1	360 (Lithium)	3.42 lbs; 1.55 kg
Chrome YTX20HL-BS	18	310	13.52 lbs; 6.12 kg
Chrome YTX20HL-BS Pirate Bay	18	310	13.22 lbs; 6.0 kg
Chrome YTX20L-BS	18	270	13.52 lbs; 6.12 kg
Chrome YTX20L-BS Pro	18	270	13.88 lbs; 6.29 kg
Chrome YTX20L-BS Zipp	18	270	13.88 lbs; 6.29 kg
DEESPAEK YTX20L-BS	12	620 (Lithium)	4.9 lbs; 2.22 kg
Energizer TX20HL	18	310	13.67 lbs; 6.2 kg
EverLast CTX20HL-BS	18	310	14.89 lbs; 6.75 kg
EverLast CTX20L-BS	14	220	13.77 lbs; 6.24 kg
ExpertPower YTX20L-BS	20	330	13.7 lbs; 6.2 kg
ExpertPower YTX20L-BS Gel	20	340	13.7 lbs; 6.2 kg
Interstate YTX20HL-BS	18	310	15 lbs; 6.8 kg
Kimpex YTX20L-BS	-	270	13.22 lbs; 6.0 kg
Mighty Max YTX20L-BS	18	270	13 lbs; 5.9 kg
MMG YTX20L-BS MMG-6	-	420 (Lithium)	3.09 lbs; 1.4 kg
NOCO NLP20	7	600 max. (Lithium)	3.73 lbs; 1.7 kg
PowerStar YTX20L-BS	18	220	15 lbs; 6.8 kg
Renegade RG20L-WS	20	500(?)	14.6 lbs; 6.61 kg
SDULIBITIY YTX20L-BS	7	700 (Lithium)	3.44 lbs; 1.56 kg
SigmasTek STX20HL-BS	18	310	13.44 lbs; 6.1 kg
TPE DLF20L-BS	12	620 (Lithium)	4.4 lbs; 2.0 kg
TPE YTX20L-BS	7	700 (Lithium)	3.09 lbs; 1.4 kg
TYKOOL LFP20L-BS	12	600 (Lithium)	5.1 lbs; 2.3 kg
UPLUS EB20H-3	18	310	13.1 lbs; 5.93 kg
Weize Lithium YTX20L-BS	8	600 (Lithium)	5.874 lbs; 2.67 kg
TPE DLF20L-BS	12	620 (Lithium)	4.4 lbs; 2.0 kg
TPE YTX20L-BS	7	700 (Lithium)	3.09 lbs; 1.4 kg
TYKOOL LFP20L-BS	12	600 (Lithium)	5.1 lbs; 2.3 kg
UPLUS EB20H-3	18	310	13.1 lbs; 5.93 kg
Weize Lithium YTX20L-BS	8	600 (Lithium)	5.874 lbs; 2.67 kg

Chart 5: The Most Popular YTX20L-BS and YTX20HL-BS Batteries

Additionally, the YTX20L-BS and YTX20HL-BS batteries offer similar dimensions (6.875 x 3.4375 x 6.125 inches) but different performance levels. The "HL" model stands for "high performance," with a higher CCA rating of 310 amps, making it easier to start large engines. These batteries have a 10-hour capacity ranging from 14 to 19Ah, with lithium versions providing 350 to 500 amps, ideal for demanding applications.

Figure 8: YTX9-BS Battery

Model	10h Capacity (Ah)	CCA (Amps)	Weight (lbs/kg) Review
Banshee DLFP9-BS Lithium Battery	8	150 (Lithium)	2.3 lbs; 1.04 kg -
Battanux YTX9-BS Battery	8	135	5.95 lbs; 2.70 kg -
Casil YTX9-BS Battery	8	144	6.2 lbs; 2.81 kg -
Chrome YTX9-BS iGel Battery	6	180	6.61 lbs; 3.0 kg -
Chrome YTX9-BS Pirate Bay Battery	8	120	6.61 lbs; 3.0 kg -
DEESPAEK YTX9-BS Battery	6	350 (Lithium)	2.4 lbs; 1.09 kg -
Deka Sports Power ETX-9	8	120	7 lbs; 3.17 kg -
Energizer TX9 AGM Battery	8	120	6.75 lbs; 3.06 kg -
EverLast CTX9-BS Battery	8	135	7 lbs; 3.17 kg -
ExpertPower ETX9-BS Battery	9	180	6.04 lbs; 2.73 kg -
Interstate YTX9-BS Battery	8	135	7.8 lbs; 3.53 kg -
MaxLithium YTX9-BS Battery	6	360 (Lithium)	2.4 lbs; 1.09 kg -
Mighty Max YTX9-BS Battery	8	135	6.72 lbs; 3.05 kg -
MMG YTX9-BS Lithium Ion	5	300 (Lithium)	2 lbs; 0.91 kg -
MotoBatt MBTX9U Battery	10.5	-	8 lbs; 3.62 kg -
Neptune YTX9-BS Battery	9	120	6.6 lbs; 3.0 kg -
NOCO NLP9	3	400 max. (Lithium)	2.29 lbs; 1.03 kg
NOCO NLP14	4	500 max. (Lithium)	2.58 lbs; 1.17 kg
PowerStar YTX9-BS Battery	8	-	9 lbs; 4.08 kg -
Power-Sonic PTX9-BS Battery	8	120	7 lbs; 3.17 kg -

Chart 6: The Most Popular YTX9-BS Batteries

For smaller devices like lightweight motorcycles, ATVs, and portable generators, the YTX9-BS and YTX5L-BS batteries offer good performance and portability. These are smaller in size and capacity but sufficient for starting small equipment and ensuring a quick response.

Figure 9: YTX5L-BS Battery

Model	10h Capacity (Ah)	CCA (Amps)	Weight (lbs/kg)
AJC ATX5L	-	70	4.14 lbs; 1.87 kg
AMPXELL YTX5L-BS	3.5	210 (Lithium)	1.77 lbs; 0.80 kg
Chrome YTX5L-BS	4	70	4 lbs; 1.82 kg
Chrome YTX5L-BS iGel	4	70	4.05 lbs; 1.84 kg
Chrome YTX5L-BS Pirate Bay	4	70	3.7 lbs; 1.68 kg
Energizer TX5L	4	70	3.92 lbs; 1.78 kg
Everlast CTX5L-BS	4	80	-
ExpertPower YTX5L-BS	5	75	3.62 lbs; 1.64 kg
ExpertPower YTX5L-BS Gel	5	-	3.61 lbs; 1.64 kg
Interstate YTX5L-BS	4	80	4.77 lbs; 2.16 kg
MaxLithium YTX5L-BS	3.5	210 (Lithium)	1.76 lbs; 0.80 kg
Mighty Max YTX5L-BS	4	65	3.62 lbs; 1.64 kg
Mighty Max YTX5L-BS Gel	4	80	3.69 lbs; 1.67 kg
MMG YTX5L-BS Gel	5 (20h)	80	4 lbs; 1.82 kg
SDULIBITIY YTX5L-BS	2	200 (Lithium)	0.84 lbs; 0.38 kg
SigmasTek ST5L-BS	4	80	4.14 lbs; 1.86 kg
TPE YTX5L-BS	3	200 (Lithium)	0.86 lbs; 0.39 kg
UPLUS EB5-3	4	80	3.97 lbs; 1.80 kg
Yuasa YTX5L-BS	4	80	4.2 lbs; 1.90 kg
Weize YTX5L-BS	4	125	3.38 lbs; 1.53 kg
MMG YTX5L-BS	1.67	120 (Lithium)	1.07 lbs; 0.49 kg
Moskee YTX5L-BS	4	70	3.97 lbs; 1.80 kg
Neptune YTX5L-BS	5 (20h)	70	3.7 lbs; 1.68 kg
NOCO NLP5	2	250 max. (Lithium)	1.5 lbs; 0.69 kg
PowerStar PS5L-BS	4	145	4.5 lbs; 2.04 kg
PowerTex PTX5L	2.5	75 (Lithium)	1.1 lbs; 0.50 kg

Chart 7: The Most Popular YTX5L-BS Batteries

By understanding the specs and suitability of various batteries, you can choose the most appropriate one based on the type and performance requirements of your equipment. Whether you need a battery with a high CCA for large devices or a smaller battery for portable equipment, the market has suitable options available.

How to Safely Start a Lawnmower Battery from a Car?

Using a car battery to jump-start a lawnmower battery is a common emergency measure, but it requires careful attention to safety and the correct steps to prevent damage to the battery or equipment. Here's how to safely use a car battery to jump-start a lawnmower battery.

Before beginning, make sure the car is turned off. The car's alternator can produce high currents while running, which might overload and damage the lawnmower's electrical system, including the battery and other sensitive components. Never attempt to jump-start with the car engine running; even leaving the car key in the ignition in the "standby" or "accessory" position can be risky.

When connecting the cables, it’s crucial to avoid contact between the positive cable and any metal parts other than the terminals on the lawnmower and car batteries. Typically red, the positive cable should be connected first to the positive terminal of the lawnmower battery and then to the positive terminal of the car battery. This sequence helps minimize the risk of accidental sparks and increases safety.

After successfully jump-starting the lawnmower, it's advisable to run it for at least two hours to ensure the battery charges sufficiently. Most modern riding mowers from brands like John Deere, Ryobi, and Cub Cadet have alternators that charge the battery while mowing. This not only helps restore the battery’s charge but also ensures the mower is ready for its next use.

Although jump-starting is a convenient temporary solution, it should only be used when necessary. If possible, a safer method is charging the lawnmower battery with a suitable charger. This ensures the battery regains power more stably and safely, reducing battery wear and extending its lifespan. Following the right steps and safety precautions ensures not only the long-term stable operation of the equipment but also helps prevent potential accidents.

Figure 10: Lawnmower

Battery Care Guide

Maintaining the lifespan of your power tool batteries requires understanding their characteristics and treating each type appropriately to ensure they are always ready when needed. Let's delve into the specifics of care and maintenance for different types of batteries, enhancing their performance and longevity.

Nickel-Cadmium (NiCd) Batteries: These batteries should fully discharge periodically. About once every two months, use your NiCd-powered device until the battery is completely depleted. This process, known as cycling, helps prevent the memory effect—a condition where batteries hold less charge over time. NiCd batteries are one of the few types that perform well even when stored empty. However, this doesn't mean they should be left uncharged if you plan to use them soon. Charging NiCd batteries quickly before use, such as when preparing to operate a leaf blower or a cordless sander, is beneficial. Using all the battery's power before recharging can also help. Overcharging can be harmful as it might lead to crystalline deposits inside the battery, which impede its ability to recharge efficiently. If a NiCd battery has been overcharged, consider using a pulse charger to help dissolve these crystals and restore battery capacity, though perfect restoration may not always be possible.

Nickel-Metal Hydride (NiMH) Batteries: Unlike NiCd, NiMH batteries should be kept away from heat and charged with their original chargers that employ a specific charging algorithm suitable for NiMH technology. These batteries are lighter and have a higher capacity compared to NiCd, making them ideal for high-drain devices like daily-used drills. Despite their advantages, NiMH batteries also have a high self-discharge rate and can lose their charge relatively quickly when not in use. To maximize lifespan, it is recommended to use NiMH batteries regularly. If your tool usage is sporadic, consider depleting the battery every few months to maintain its efficiency. Heat resistance is another challenge with NiMH batteries; they tend to heat up during use and charging. It's important to remove the battery from the charger once it feels warm and let it cool down before recharging. Always ensure that you use the designated charger for NiMH batteries to avoid damaging the battery with inappropriate charging practices.

Lithium-Ion (Li-ion) Batteries: These are the lightest and most efficient batteries with the longest overall lifespan, yet they are sensitive to conditions such as falls, extreme heat, or overcharging. To maintain a Li-ion battery, keep it away from heat sources and avoid leaving it on the charger after it has reached full capacity. Unlike NiCd and NiMH, it is detrimental for Li-ion batteries to be fully discharged. Instead, store them at about 80% capacity to minimize stress and prolong their life. Li-ion batteries do not suffer from the memory effect, so it's best to charge them when they drop to about 20% remaining power. Keeping the charge level between 40% and 80% optimizes their performance and lifespan. Before heavy usage, such as deck sanding or hedge trimming, charging up to 100% is fine but do not store them at this level to avoid degrading the active materials within the battery.

By following these detailed practices, you can significantly extend the operational life of your power tool batteries, ensuring that they deliver effective performance and reliability over many cycles of use. Each type of battery has its nuances, and catering to these will not only save you money in the long run but also ensure your tools are always ready for action.

Conclusion

The selection of a lawnmower battery should be approached with a detailed understanding of the mower’s requirements and the battery’s characteristics. It is imperative to match the battery size, voltage, chemistry, and terminal type with the mower’s specifications to avoid operational inefficiencies or damage. Ensuring that the battery can handle the typical starting current demands without exceeding its capacity is crucial. Proper charging methods and using the appropriate charger play significant roles in maintaining battery health and safety. By adhering to these guidelines, you can not only extend the life of the lawnmower battery but also ensure it provides reliable service throughout its lifespan. This approach will guarantee that your lawnmower is ready and efficient every time you need it, ultimately saving time and reducing costs associated with battery replacement and maintenance.

Frequently Asked Questions [FAQ]

1. Can the lawnmower battery be charged when it is out of power?

Yes, a lawnmower battery can be charged when it is out of power. It's essential to recharge the battery as soon as it runs low to ensure it maintains its capacity and health.

2. What size battery do I need for my lawn mower?

The size of the battery you need for your lawnmower depends on the mower's voltage and power requirements. Most riding lawn mowers use a 12-volt battery, but smaller push mowers might use a 6-volt battery.

3. What is a standard lawn mower battery?

A standard lawnmower battery typically refers to a 12-volt lead-acid battery that is used in most riding lawnmowers. These batteries are designed to provide sufficient power for starting the engine and are capable of supplying the necessary current for the mower’s electrical system. The most common type found in lawn mowers is the U1 size, which includes specifications suited to the typical demands of lawn mowing equipment.

4. What kind of battery is used in a lawn mower?

Lawnmowers commonly use one of two types of batteries: lead-acid or lithium-ion.

5. What to look for when buying a battery for a lawn mower?

Voltage and Capacity: Ensure the battery matches the voltage and ampere-hour (Ah) specifications of your mower to provide adequate power without straining the mower's motor.

Battery Type: Choose between lead-acid or lithium-ion based on your preferences for maintenance, cost, and performance.

Physical Size and Terminal Type: The battery should fit in the mower’s battery compartment. Check whether you need a U1L or U1R type, where the terminal positions differ.

CCA (Cold Cranking Amps): This is important if you live in a cold climate, as it indicates the battery’s ability to start an engine in cold weather.

Warranty and Brand: Opt for a reputable brand with a good warranty to ensure reliability and support.

Please refer to the English Version as our Official Version.

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