The John Deere 8R 340 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 8R 340 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 8R 340 Battery FAQ
Battery voltage
The official battery voltage for the John Deere 8R 340 tractor is 12 volts
Battery group size
The John Deere 8R 340 tractor uses two Group 31 batteries
Battery CCA
The recommended official John Deere 8R 340 tractor battery has a Cold Cranking Amps (CCA) rating of 925
Battery location
The battery on the John Deere 8R 340 tractor is located underneath the right access step
Bad battery symptoms
Common symptoms of a failing battery in a John Deere 8R 340 tractor include hard starting or no response when trying to start, clicking sounds indicating insufficient power, and rapid battery drain. Additionally, visible corrosion on battery terminals can also prevent proper electrical flow
Official information note
Mistakes do happen. Please check official deere.com website for official information.
