The John Deere 4066R 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 4066R 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 4066R Battery FAQ
Replacement battery recommendation
The best replacement battery for the John Deere 4066R tractor is the John Deere Performance Battery, which is designed to fit most vehicles and equipment, including the 4066R model. It offers reliable performance and is backed by a warranty for peace of mind
Battery voltage
The John Deere 4066R tractor battery voltage is 12 volts
Battery group size
The official battery group size for the John Deere 4066R tractor is Group 31
Battery CCA
The John Deere 4066R tractor’s recommended battery has a Cold Cranking Amps (CCA) rating of 770
Battery location
The battery on the John Deere 4066R tractor is located underneath the right access step
Battery replacement steps
The battery on a John Deere 4066R tractor is located underneath the right access step; open the flap and remove the step by taking out the attaching screws if necessary. On tractors with step lighting, first open the cover and disconnect the light connector before removing the step
Official information note
Mistakes do happen. Please check official deere.com website for official information.
