The Kubota LX3520 tractor uses a 12-volt battery rated at 430 CCA and 36 Ah, with 80 minutes of reserve capacity. The published battery designation is 55B24L(S)-MF.
ModelLX3520
YearsCurrent
Voltage12 V
ConfidenceMedium
Voltage
12 V
Cold cranking
430 CCA
Capacity
36 Ah
Battery size
55B24L(S)-MF
How this battery compares
Benchmarked only against other compact/subcompact tractor models in this researched Kubota dataset.
Cold cranking amps430 CCA
Low
LowAverageHigh
Low 430 CCAMedian 490 CCAHigh 560 CCA
Battery capacity36 Ah
Low
LowAverageHigh
Low 36 AhMedian 36 AhHigh 45 Ah
Reserve capacity80 min
Average
LowAverageHigh
Low 77.8 minMedian 80 minHigh 92 min
BA
Battery specification
Published model-specific battery data
System voltage
12 V
Published cold cranking amps
430 CCA
Published amp-hour capacity
36 Ah
Ah rating basis
5-hour
Reserve capacity
80 min
Battery designation
55B24L(S)-MF
Battery construction
Maintenance-free lead-acid
RP
Replacement battery
What to match when buying
Published minimum CCA to match
430 CCA
Voltage to match
12 V
Physical fit
Match case dimensions, terminal position and hold-down
ID
Model details
Identity and research coverage
Model
Kubota LX3520
Equipment class
Compact/Subcompact Tractor
Model years
Current
Research confidence
Medium
DX
Useful derived specs
Calculated only from confirmed numeric values
Approx. stored energy
432 Wh
CCA per Ah
11.9
BUY
Choosing a replacement battery
Electrical rating and physical fit both matter
Use a 12V replacement that meets or exceeds the published 430 CCA rating, then match the original case dimensions, terminal orientation and hold-down.
1. Voltage
Keep the replacement at the verified system voltage.
2. Case size
Match tray length, width, height and hold-down style.
3. Terminal layout
Make sure the positive and negative posts are on the correct sides for the tractor's cables.
4. Starting power
Meet or exceed the published CCA when a model-specific CCA is confirmed.
5. Capacity
Match Ah and reserve capacity when those ratings are published, especially on higher-accessory-load tractors.
?
What battery size fits the Kubota LX3520?
Quick answer
The published fitment is 55B24L(S)-MF. Match that designation plus the original terminal orientation, case dimensions and hold-down before buying a replacement.
?
Is 430 CCA enough for the Kubota LX3520?
Quick answer
The published rating is 430 CCA. That sits toward the lower end of the compact/subcompact tractor models in this dataset, so there is little reason to chase a huge battery unless you need extra cold-weather starting margin. Match or exceed 430 CCA and focus on correct physical fit.
?
Can I use a higher-CCA battery in the Kubota LX3520?
Quick answer
Yes. Moving above 430 CCA can give extra cold-start margin as long as the replacement stays 12V and the case size, terminals and hold-down fit correctly. You do not need to dramatically oversize it for normal use.
?
Is 36 Ah a small battery for the Kubota LX3520?
Quick answer
The published capacity is 36 Ah, low relative to many compact/subcompact tractor models in this dataset. That is not automatically a problem—the tractor was designed around that size. A much larger Ah battery only helps if it still fits and the charging system can keep it healthy.
?
What does the 80-minute reserve capacity mean on the Kubota LX3520?
Quick answer
The published reserve capacity is 80 minutes, roughly mid-range for comparable Kubota models in this dataset. It is a useful secondary spec when comparing otherwise similar replacement batteries.
Research note: Series-derived from LX20 operator literature; verify exact USA trim before publishing if absolute OEM certainty is required.
Disclaimer: Specifications are provided as a reference from published manufacturer, service-manual and reference information. Verify critical service values with Kubota or the correct service manual. Kubota website
