The John Deere 8400R battery size is listed as Group 31, 12 V, 150 CCA, 13 × 6.81 × 9.44 in.
Battery sizeGroup 31
Voltage12 V
CCA150 CCA
Case size13 × 6.81 × 9.44 in
John Deere 8400R Battery Specs
Battery size / group
Group 31
Battery voltage
12 V
Battery CCA
150 CCA
Battery dimensions
13 × 6.81 × 9.44 in
Battery Spec Comparisons Chart
CCA comparison
This model
150 CCA
Average
851.24 CCA
Low
150 CCA
High
1400 CCA
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 8400R Battery FAQ
Replacement battery recommendation
The best replacement battery for a John Deere 8400R tractor is the John Deere StrongBox battery, which is designed to meet the demanding specifications of heavy-duty equipment. These batteries are built for durability and reliability, making them suitable for agricultural use
Battery voltage
The official battery voltage for the John Deere 8400R tractor is 12 volts
Battery group size
The official battery group size for the John Deere 8400R 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 Cold Cranking Amps (CCA) for the John Deere 8400R tractor battery is 1, 150 CCA. This ensures reliable starting power, especially in cold weather conditions
Battery location
The battery on the John Deere 8400R tractor is located on the left side beside the steps. To access it, you need to pull outward on the cover and lift it off
Battery replacement steps
Park the tractor safely, raise the hood, remove side panels, release grille latches, and unhook the grille frame. Disconnect the black negative cable first, then the red positive cable, remove the hold-down bracket cap screws, and pull the battery vent tube from the tray before lifting out the battery
Bad battery symptoms
Common symptoms of a bad battery in a John Deere 8400R tractor include hard starting or no response when trying to start, and corrosion on the battery terminals or connections. Additionally, if the battery is unable to hold a charge or shows low voltage, it may need to be replaced
Official information note
Mistakes do happen. Please check official deere.com website for official information.
