The John Deere 9420R 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 9420R 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 9420R Battery FAQ
Replacement battery recommendation
John Deere offers the StrongBox line of batteries for heavy-duty use, and these batteries are designed to fit most John Deere equipment, including the 9420R tractor
Battery voltage
The official battery voltage for the John Deere 9420R tractor is 12 volts
Battery group size
The official battery group size for the John Deere 9420R tractor is BCI Group Size 31. This size is designed to provide the necessary power for the tractor’s engine and electrical systems
Battery CCA
The recommended official John Deere 9420R tractor battery has a Cold Cranking Amps (CCA) rating of 925
Battery location
The battery on the John Deere 9420R tractor is located underneath the right access step; open the flap or remove the access step to access it
Battery replacement steps
To replace the battery on a John Deere 9420R tractor, locate the battery underneath the right access step, open the flap, and if necessary, remove the access step by taking out the attaching screws. Make sure to disconnect any light connectors if the tractor has step lighting before removing the step
Bad battery symptoms
A weak or dead battery in a John Deere 9420R tractor often causes hard starting, no response when turning the key, or a clicking sound instead of the engine cranking, and may also trigger flashing voltage or SERVICE ALERT indicators on the dashboard
Official information note
Mistakes do happen. Please check official deere.com website for official information.
