The John Deere 9R 640 battery size is listed as Group 31, 12 V, 13 × 6.81 × 9.44 in.
Battery sizeGroup 31
Voltage12 V
Case size13 × 6.81 × 9.44 in
John Deere 9R 640 Battery Specs
Battery size / group
Group 31
Battery voltage
12 V
Battery dimensions
13 × 6.81 × 9.44 in
Battery Spec Comparisons Chart
Voltage comparison
This model
12 V
Average
11.94 V
Low
6 V
High
12 V
Case length comparison
This model
13 in
Average
11.57 in
Low
9.38 in
High
13 in
John Deere 9R 640 Battery FAQ
Battery voltage
The official battery voltage for the John Deere 9R 640 tractor is 12 volts
Battery group size
The official battery group size for the John Deere 9R 640 tractor is Group 31. This size is commonly used for heavy-duty applications in large tractors
Battery CCA
The recommended official John Deere 9R 640 tractor battery has a Cold Cranking Amps (CCA) rating of 1, 000 amps
Battery location
The battery on the John Deere 9R 640 tractor is located underneath the right access step
Battery replacement steps
To replace the battery on a John Deere 9R 640 tractor, disconnect the negative cable first, then the positive cable, remove the battery hold-down, and lift the battery out. When installing, connect the positive cable first, then the negative cable, and secure the battery in place
Bad battery symptoms
Common symptoms of a bad battery in a John Deere 9R 640 tractor include starting failures, such as the engine not cranking or clicking when attempting to start. Additionally, you may experience weak or failed battery performance, which can lead to other electrical issues
Official information note
Mistakes do happen. Please check official deere.com website for official information.
