The Kubota TG1860G tractor uses a 12-volt starting battery with a published rating of 300 CCA. The published battery designation is U1 L-9. Its electrical setup uses Charging coil with regulator (20 A).
ModelTG1860G
Years1998-2003
Voltage12 V
ConfidenceHigh
Voltage
12 V
Cold cranking
300 CCA
Battery size
U1 L-9
BA
Battery specification
Published model-specific battery data
System voltage
12 V
Published cold cranking amps
300 CCA
Battery designation
U1 L-9
BCI group
U1
CH
Charging system
Alternator / dynamo and charging data
Charging system
Charging coil with regulator
Charging output
20 A
RP
Replacement battery
What to match when buying
Published minimum CCA to match
300 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 TG1860G
Equipment class
Lawn/Garden Tractor
Model years
1998-2003
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 300 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 TG1860G?
Quick answer
The published fitment is U1 L-9. Match that designation plus the original terminal orientation, case dimensions and hold-down before buying a replacement.
?
Is 300 CCA enough for the Kubota TG1860G?
Quick answer
The published rating is 300 CCA. That sits toward the lower end of the lawn/garden 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 300 CCA and focus on correct physical fit.
?
Can I use a higher-CCA battery in the Kubota TG1860G?
Quick answer
Yes. Moving above 300 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.
?
What is the advantage of the Kubota TG1860G 20 A alternator?
Quick answer
The charging system is rated at 20 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
