The Kubota BX1870-1 tractor uses a 12-volt starting battery with a published rating of 435 CCA. Its electrical setup uses negative ground and Alternator (40 A).
ModelBX1870-1
Years2015-2016
Voltage12 V
ConfidenceHigh
Voltage
12 V
Cold cranking
435 CCA
How this battery compares
Benchmarked only against other compact/subcompact tractor models in this researched Kubota dataset.
Cold cranking amps435 CCA
Average
LowAverageHigh
Low 430 CCAMedian 490 CCAHigh 560 CCA
Charging output40 A
High
LowAverageHigh
Low 22.1 AMedian 40 AHigh 40 A
BA
Battery specification
Published model-specific battery data
System voltage
12 V
Published cold cranking amps
435 CCA
Ground
Negative
CH
Charging system
Alternator / dynamo and charging data
Charging system
Alternator
Charging output
40 A
RP
Replacement battery
What to match when buying
Published minimum CCA to match
435 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 BX1870-1
Equipment class
Compact/Subcompact Tractor
Model years
2015-2016
Research confidence
High
BUY
Choosing a replacement battery
Electrical rating and physical fit both matter
Use a 12V replacement that meets or exceeds the published 435 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.
?
How much CCA should a Kubota BX1870-1 battery have?
Quick answer
The published rating is 435 CCA, which is around the middle of the range for comparable Kubota compact/subcompact tractor models here. A replacement meeting or modestly exceeding 435 CCA is the sensible target.
?
Can I use a higher-CCA battery in the Kubota BX1870-1?
Quick answer
Yes. A somewhat higher-CCA 12V battery is normally fine if it physically fits. It can improve cold-start reserve, but correct case size and terminal layout matter more than a small CCA increase.
?
What is the advantage of the Kubota BX1870-1 40 A alternator?
Quick answer
The charging system is rated at 40 A, high for this equipment class. That gives more headroom for cab electronics, lighting and accessory loads while still replenishing the starting battery.
Research note: Only model-specific values supported by the cited source material are shown as confirmed.
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
