Choosing the correct battery size ensures efficient power, longer run time, and compatibility with your mower model.
In this post, we’ll explore a complete lawn mower battery size chart, covering all major brands and models, so you can confidently replace or upgrade your mower’s power source.
Lawn Mower Battery Size Chart
John Deere
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| D110, D125 | 12V | 35 Ah | Lead Acid (AGM) | U1 | 300 |
| Z335E, Z345M | 12V | 35 Ah | Lead Acid (AGM) | U1R | 340 |
| E100, E120 | 12V | 35 Ah | Lead Acid | U1 | 230 |
| S130, S140 | 12V | 35 Ah | Lead Acid (AGM) | U1 | 300 |
| X350, X390 | 12V | 40 Ah | Lead Acid (AGM) | U1 | 340 |
| Z525E | 12V | 35 Ah | Lead Acid (AGM) | U1R | 340 |
Cub Cadet
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| XT1, XT2 | 12V | 35 Ah | Lead Acid | U1 | 230 |
| RZT S50, S54 | 12V | 35 Ah | Lead Acid | U1R | 300 |
| CC30H | 12V | 30 Ah | Lead Acid | U1 | 200 |
| ZT1 42E (Electric) | 56V | 60 Ah | Lithium-Ion | N/A | N/A |
| LT42 | 12V | 35 Ah | Lead Acid | U1 | 230 |
Related Bad Boy Mower Comparison Chart(Complete Models Comparison)
Toro
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| Recycler 60V FlexForce | 60V | 6.0–10.0 Ah | Lithium-Ion | N/A | N/A |
| TimeCutter SS4225 | 12V | 35 Ah | Lead Acid | U1R | 300 |
| 20363 Electric | 60V | 6.0 Ah | Lithium-Ion | N/A | N/A |
| 21466 Super Recycler | 60V | 7.5 Ah | Lithium-Ion | N/A | N/A |
| Titan ZX5400 | 12V | 35 Ah | Lead Acid | U1R | 340 |
EGO Power+
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| LM2100 | 56V | 5.0–7.5 Ah | Lithium-Ion | N/A | N/A |
| LM2142SP | 56V | 10.0 Ah | Lithium-Ion | N/A | N/A |
| ZT4204L Z6 ZTR | 56V | 40 Ah (total) | Lithium-Ion | N/A | N/A |
| LM2135SP | 56V | 7.5 Ah | Lithium-Ion | N/A | N/A |
Ryobi
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| 40V HP Mower | 40V | 6.0–7.5 Ah | Lithium-Ion | N/A | N/A |
| RY48130 Rider | 48V | 75 Ah | Lead Acid | Group 24 | 500 |
| RYRM8034 ZTR | 80V | 60 Ah (total) | Lithium-Ion | N/A | N/A |
| RY401150 Walk-Behind | 40V | 6.0 Ah | Lithium-Ion | N/A | N/A |
| RY401140US | 40V | 7.5 Ah | Lithium-Ion | N/A | N/A |
Related Greenworks Battery Compatibility Chart(For All Models)
Greenworks
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| 80V PRO Push Mower | 80V | 2.5–5.0 Ah | Lithium-Ion | N/A | N/A |
| 60V Cordless | 60V | 2.5–6.0 Ah | Lithium-Ion | N/A | N/A |
| CrossoverZ Zero Turn | 60V | 60 Ah (total) | Lithium-Ion | N/A | N/A |
| GLM801600 | 60V | 5.0 Ah | Lithium-Ion | N/A | N/A |
Husqvarna
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| YTH18542 | 12V | 35 Ah | Lead Acid | U1R | 300 |
| Z254F Zero Turn | 12V | 35 Ah | Lead Acid | U1 | 340 |
| Automower 450X | 18V | 5.0 Ah | Lithium-Ion | N/A | N/A |
| TS 348XD | 12V | 35 Ah | Lead Acid | U1R | 340 |
Craftsman
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| T110, T210 | 12V | 35 Ah | Lead Acid | U1 | 300 |
| T225 | 12V | 40 Ah | Lead Acid | U1 | 340 |
| V60 Cordless | 60V | 5.0–7.5 Ah | Lithium-Ion | N/A | N/A |
| CMCMW260P1 | 60V | 5.0 Ah | Lithium-Ion | N/A | N/A |
Related EGO Mower Comparison Chart(All Types + Models)
Snapper
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| 82V Max Push Mower | 82V | 2.0–4.0 Ah | Lithium-Ion | N/A | N/A |
| 360Z Zero Turn | 12V | 35 Ah | Lead Acid | U1 | 300 |
| SPX Series | 12V | 35 Ah | Lead Acid | U1 | 230 |
Troy-Bilt
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| TB30, TB42 | 12V | 35 Ah | Lead Acid | U1 | 230 |
| TB30E Electric | 56V | 60 Ah | Lithium-Ion | N/A | N/A |
| Bronco 42 | 12V | 35 Ah | Lead Acid | U1 | 230 |
BLACK+DECKER
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| CM2043C Mower | 40V | 2.5–4.0 Ah | Lithium-Ion | N/A | N/A |
| CM2060C | 60V | 5.0 Ah | Lithium-Ion | N/A | N/A |
| 3-in-1 MTC220 | 20V | 4.0 Ah | Lithium-Ion | N/A | N/A |
Related EGO Battery Comparison Chart(For All Battery Models)
WORX
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| WG779 | 40V (2x20V) | 4.0 Ah x2 | Lithium-Ion | N/A | N/A |
| Landroid WR155 | 20V | 4.0 Ah | Lithium-Ion | N/A | N/A |
| WG751 | 56V | 5.0 Ah | Lithium-Ion | N/A | N/A |
Ariens
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| IKON XD 52 | 12V | 35 Ah | Lead Acid | U1R | 300 |
| Zoom 34 | 12V | 35 Ah | Lead Acid | U1 | 230 |
| Apex 60 | 12V | 40 Ah | Lead Acid | U1R | 340 |
Milwaukee
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| M18 FUEL 21″ Mower | 18V (2x18V) | 6.0–12.0 Ah | Lithium-Ion | N/A | N/A |
| M12 Lawn Mower | 12V | 4.0 Ah | Lithium-Ion | N/A | N/A |
Kobalt
| Model | Battery Voltage | Amp-Hours (Ah) | Battery Type | Group Size | CCA (Cold Cranking Amps) |
|---|---|---|---|---|---|
| KMP 6080-06 | 80V | 2.5–6.0 Ah | Lithium-Ion | N/A | N/A |
| KX ZT 80V Zero Turn | 80V | 60 Ah (total) | Lithium-Ion | N/A | N/A |
Related Lawn Mower Spark Plug Gap Chart(For All Brands + Models)
Tips for Choosing the Right Lawn Mower Battery
1. Check Manufacturer Specs
Refer to your owner’s manual or use our chart to confirm the correct voltage, dimensions, and type of battery.
2. Understand Battery Chemistry
- Lead Acid: Affordable, widely available, needs maintenance.
- AGM (Absorbent Glass Mat): Maintenance-free, spill-proof, and vibration-resistant.
- Lithium-Ion: Lightweight, fast-charging, longer life, but pricier.
3. Look for Cold Cranking Amps (CCA)
Especially for riding mowers, ensure sufficient CCA to start the engine even in cold weather.
4. Consider Interchangeable Platforms
Brands like EGO, Ryobi, Greenworks, and Toro offer interchangeable battery systems across tools—buy once, use with many devices.
Related Mower Blade Angle Chart(For All Mower Brands)
How to Test Lawn Mower Battery Size & Health
- Measure Voltage: Use a multimeter—fully charged 12V batteries should read ~12.6–12.8V.
- Check Dimensions: Compare physical battery size (U1 = ~7.75″ L × 5″ W × 6.25″ H).
- Observe Run Time: Rapid discharge or failure to hold charge signals replacement time.
- Inspect for Corrosion: Rusty or acid-leaking terminals indicate damage.
Related Mower Blade Cross Reference Chart(For All Mower Brands)
When Should You Replace a Lawn Mower Battery?
On average:
- Lead-acid batteries last 3–4 years.
- Lithium-Ion batteries can last up to 5 years or 1,000+ charge cycles.
Signs of a failing battery:
- Sluggish engine crank
- Frequent stalls
- Requires jump-starting often
- Won’t hold a charge
Lawn Mower Battery Maintenance Tips
- Store Indoors: Keep in a dry, cool place during winter.
- Charge Properly: Use only the manufacturer-recommended charger.
- Clean Terminals: Use baking soda and water to remove corrosion.
- Avoid Overcharging: Especially with older lead-acid batteries.
Related Rural King Battery Size Chart(Ultimate Size Guide For All Applications)
FAQs
How do I know what size battery I need for my lawn mower?
To determine the correct battery size for your lawn mower:
- Check the Owner’s Manual: This is the most reliable source. It will specify the correct voltage (e.g., 12V), group size (e.g., U1 or U1R), and sometimes amp-hour (Ah) rating.
- Look at the Old Battery: Note the label for voltage, Ah, Cold Cranking Amps (CCA), and physical dimensions.
- Measure the Battery Tray: Ensure the new battery physically fits your mower’s battery compartment.
- Check Terminal Orientation: U1 vs. U1R batteries have terminals on opposite sides.
- Match Battery Chemistry: Stick with the recommended battery type (Lead-Acid, AGM, or Lithium-Ion).
How long does a 12-volt battery last in a lawn mower?
The lifespan of a 12V lawn mower battery depends on its type and how it’s maintained:
- Lead-Acid (Flooded or AGM): Typically lasts 3 to 4 years with proper care.
- Lithium-Ion: Can last up to 5 to 7 years or more than 1,000 charge cycles.
To extend battery life:
- Charge the battery regularly (even in the off-season).
- Avoid deep discharges.
- Store in a cool, dry place during winter.
Related Toro Mower Height Settings Chart(For All Models)
Can I use a higher CCA battery in my lawn mower?
Yes, you can safely use a battery with a higher Cold Cranking Amps (CCA) rating than recommended, as long as it physically fits in your mower’s tray and matches the voltage.
- Higher CCA = more power available to crank the engine in cold conditions.
- This is especially beneficial for starting the mower in cooler temperatures.
However, using a lower CCA battery than required can lead to starting problems.
How many amps is a lawn mower battery?
Lawn mower batteries are typically rated by Amp-Hours (Ah), not continuous amps, but here’s a rough idea:
- Riding Mowers (12V Lead-Acid): Typically 30–40 Ah, and can deliver 100–300 CCA.
- Cordless Mowers (Lithium-Ion): Range from 2.0 Ah to 10.0 Ah, depending on brand and model.
For example:
- A 12V 35Ah battery can supply 35 amps for 1 hour, or 17.5 amps for 2 hours.
Is a higher Ah battery better for a lawn mower?
Generally, yes, a higher Amp-Hour (Ah) battery:
- Provides longer run time between charges.
- Delivers more sustained power, especially useful for electric mowers.
- Handles larger lawns or tougher grass without dying quickly.
But remember:
- Charging time may increase.
- It might be heavier or more expensive.
- Ensure compatibility with your mower’s charging system.
