Lawn Mower Battery size guide (with easy to use size charts)
This post was last updated on February 12th, 2023 at 11:01 pm
Is it just about the right time for you to replace your lawn mower battery? Or maybe it’s the lawn tractor battery that needs replacement? For all internal combustion engines, there must be a battery to help crank or start the engine before it gets to work. Most people find it difficult to determine the right size of small engine batteries, the right dimensions, and other properties of the battery that matter when it comes to buying a new battery. Check the specifications on your Lawn Mower of tractor to determine the correct battery in the below lawn mower battery size charts.
The Battery Council International (BCI) has standardized lawn mower batteries into the 12-Volt batteries group U1 format but even with that in mind, these batteries will still differ in other battery characteristics.
To be on the safe side while choosing the right size of your lawnmower, there are two other battery properties that need to match your engine specifications and that is; the cold-cranking amps and the battery terminal position of the battery in lawnmowers i.e the position of the positive terminal and the negative battery terminal with respect to the battery cables.
If you need to replace your Lawn Mower Tires, check the Tires Size Chart here
Related smaller battery sizes: Battery Size Chart : what are the sizes of batteries?
Lawn Mower Battery Size – 12volts 100ah Lithium Iron Phosphate Battery
|Model||Voltage (v)||Battery Capacity (AH)||Maximum Charge Current(Amperes)||Weight in (kgs and Pounds||Battery Physical Dimensions in (mm and inches) Length||Width in (mm and inches)||Height in (mm and inches)||Battery Cycle Life|
|B-LFP 12-40||12v||40ah||20A||6 kgs|
|B-LFP 12-50||12v||50ah||30A||7 kgs|
|B-LFP 12-80||12v||80ah||30A||12.8 kgs|
|B-LFP 12-100||12v||100ah||50A||14 kgs|
|173 mm 6.811 inches||218 mm|
|B-LFP 12-120||12v||120ah||60A||16 kgs|
|B-LFP 12-150||12v||150ah||75A||24 kgs|
|B-LFP 12-170||12v||170ah||85A||26 kgs|
|B-LFP 12-200||12v||200ah||100A||30 kgs|
|B-LFP 12-240||12v||240ah||120A||34.2 kgs|
|B-LFP 24-50||24v||50ah||25A||14.8 kgs|
|B-LFP 24-100||24v||100ah||50A||28 kgs|
|B-LFP 24-150||24v||150ah||50A||42 kgs|
|B-LFP 24-200||24v||200ah||50A||56 kgs 123.459 pounds||520 mm|
|B-LFP 24-250||24v||250ah||50A||70 kgs|
Many of these batteries fit in brands like kubota, john deere, …
Most Popular Lawn Mower Battery Sizes and Features Chart
|Battery Size||Dimensions in (inches and mm)||Battery Capacity||Batteries Cold Cranking Amps (CCA)||Weight in (kgs and pounds)|
|YTX5L-BS||4.4375 by 2.75 by 4.125 inches||4 Ah (10h)||70 to 80||1.5 to 2 kgs|
3.3 to 4.5 pounds
|YTX9-BS||5.875 by 3.4375 by 4.125 inches|
150 by 87 by 105 mm
|6 to 8 Ah (10h)||120 to 180||2.7 to 3.7 kgs|
6 to 8 lbs
|YTX12-BS||5.875 by 3.5 by 5.125 inches|
150 by 88 by 130 mm
|10 Ah (10h)||160 to 210||3.1 to 4.5 kgs|
7 to 10 lbs
|YTX14-BS||5.875 by 3.4375 by 5.75 inches|
150 by 87 by 146 mm
|12 to 14 Ah (10h)||190 to 235||3.6 to 5 kgs|
8 to 11 lbs
|YTX20L-BS||6.875 by 3.4375 by 6.125 inches|
175 by 87 by 155 mm
|14 to 20 Ah (10h)||220 to 330||5 to 6.4 kgs|
11 to 14 lbs
|YTX24HL-BS||8.0625 by 3.4375 by 6.375 inches|
205 by 87 by 162 mm
|21 Ah (10h)||300 to 350||5.9 to 8.2 kgs|
13 to 18 lbs
|YTX30L-BS||6.5625 by 4.9375 by 6.875 inches|
166 by 126 by 175 mm
|30 Ah (10h)||360 to 400||7.7 to 10 kgs|
17 to 22 lbs
|U1 & U1R||7.75 by 5,1875 by 7.3125 inches|
197 by 132 by 186 mm
|35 Ah (20h)||300 to 320||10 to 11.8 kgs|
22 to 26 lbs
Group U1 & U1R Battery Equivalents and Replacement Sizes Chart
Even though the basic battery like lead-acid batteries are still available in the market, there are other battery technologies like lithium batteries, the AGM, and gel-cell batteries (Absorbed Glass Mat is an advanced technology lead-acid battery) with no battery maintenance due to vibration resistance
|Battery Model||Battery Type||Battery Chemistry||20h Capacity||Discharge Characteristics||Weight in (kgs and lbs)|
|Deka 8AMU1R||Starting||AGM||–||320 CCA; 45 min RC (25 Amps, to 10.5v)||11.3 kgs|
|Expert Power EXP 12330||Deep Cycle||AGM||33(10h)||21.09 Amps; 60 minutes, down to 10.5v||10.8 kgs|
|Mighty Max ML35-12||Deep Cycle||AGM||37||330 Amps (5 s); 17.2 Amps, 60 minutes, down to 10.5 volts||10.5 kgs|
|MotoBatt MBU1-35||Deep Cycle||AGM||35||–||11.8 kgs|
|Power-Sonic PS-12350||Deep Cycle||AGM||35||350 Amps (10 s); 25 Amps, 60 minutes, down to 9 volts||11.2 kgs|
|SigmasTek SP12-35||Deep Cycle||AGM||35||–||11.2 kgs|
|VMAXTANKS V35-857||Deep Cycle||AGM||35||300 CCA; 75 min RC (25 Amps, down to 10.5 v)||11.3 kgs|
|Weize LFP1235||Deep Cycle||AGM||35(10h)||350 Amps(5 s); 20.4 Amps, 60 min, down to 10.5 volts||10.5 kgs|
|Chrome U1 Battery||Deep Cycle||AGM||35||525 Amps (5 s)||10.7 kgs|
|Everlast 12350DC-NB||Deep Cycle||AGM||35||–||10.7 kgs|
|Interstate Batteries DCM0035||Deep Cycle||AGM||35||–||10.4 kgs|
|Mighty Max ML-U1-CCAHR||Dual Purpose||AGM||18(10h)||320 CCA; 20 Amps, 30 min, down to 9.6 volts||6.6 kgs|
|NPP NP12-35Ah||Deep Cycle||AGM||35||–||10.5 kgs|
|PowerStar PS12-35-D||Deep Cycle||AGM||35||–||10.4 kgs|
|Universal UB12350||Deep Cycle||AGM||35||315 CCA; 18 Amps, 60 min, down to 10.5 volts||11.1 kgs|
|VMAXTANKS VPG12C-50Li||Deep Cycle||Lithium||50||150 Amps (3 s); 100 Amps (5 s), 50 Amps Continuously||5.4 kgs|
How to choose the best lawn mower battery size?
What’s the best Lawn Mower Battery Size for my Machine?
Remember something when choosing the right battery size when considering the cold-cranking amps, going below the recommended CCA will reduce the minimum expected battery life while at the same time going for a higher CCA rating has no practical advantage in any way and it might actually mess with the battery management system. The best choice would be to stick to the stipulated cold-cranking amps battery.
Lawn Mower Battery sizes and replacement explained
Depending on the battery age, which for most batteries will go up to 3 or 4 years, the battery output after a period of time starts to drop. Other factors like battery acid spill, extended storage periods without using the lawnmower especially during cold temperature seasons or battery storage in sub-freezing temperatures, vibration damage with wet cell batteries, all these factors may negatively impact the general battery condition forcing you to go for a quick replacement.
A full understanding on battery sizes charts you can read here
To get improved performance with ample power from your battery, just remember the battery tips provided in this article regarding batteries – exact battery size i.e the physical size as well as matched-up battery properties as recommended by the lawnmower manufacturer.
If you enjoyed reading this article, please don’t hesitate to leave a comment below!
Picture in this post by Clayton Cardinalli on Unsplash
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