The John Deere 8770 battery size is listed as 12 V.
Voltage12 V
John Deere 8770 Battery Specs
Battery voltage
12 V
Battery Spec Comparisons Chart
Voltage comparison
This model
12 V
Average
11.54 V
Low
6 V
High
24 V
John Deere 8770 Battery FAQ
Replacement battery recommendation
The best replacement battery for the John Deere 8770 tractor is typically a high-quality performance battery that fits the specific requirements of the tractor. For exact specifications and options, it’s recommended to check with John Deere’s official parts and service resources
Battery voltage
The official battery voltage for the John Deere 8770 tractor is 12 volts
Battery CCA
The recommended official John Deere 8770 tractor battery has a Cold Cranking Amps (CCA) rating of 925
Battery location
The battery on the John Deere 8770 tractor is located underneath the right access step. To access it, you may need to open the flap and possibly remove the access step
Battery replacement steps
To replace the battery on a John Deere 8870 tractor, first disconnect the negative (-) cable, then the positive (+) cable, and remove the battery hold down. After cleaning the battery compartment, install the new battery by connecting the positive cable first, followed by the negative cable
Bad battery symptoms
Common symptoms of a failing battery in a John Deere 8770 tractor include hard starting or no response when trying to start, visible corrosion on battery terminals, and rapid battery drain. If the battery voltage is low (11.5V or less), it likely needs to be replaced
Official information note
Mistakes do happen. Please check official deere.com website for official information.
