The John Deere 4040 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 4040 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
11.54 V
Low
6 V
High
24 V
Case length comparison
This model
13 in
Average
11.3 in
Low
9.38 in
High
13 in
John Deere 4040 Battery FAQ
Replacement battery recommendation
The best replacement battery for the John Deere 4040 tractor is a 12V 88Ah sealed lead acid battery with a high cold cranking amp rating of 720CCA, designed for starting engines. This type of battery is maintenance-free and ideal for agricultural use
Battery voltage
The official battery voltage for the John Deere 4040 tractor is 12 volts
Battery group size
The John Deere 4040 tractor uses two 12-volt batteries wired in series, with an official battery group size of Group 31 stud post
Battery CCA
The recommended battery for the John Deere 4040 tractor has a cold cranking amp (CCA) rating of 720. This rating indicates the battery’s ability to start the engine in cold conditions
Battery location
The battery on the John Deere 4040 tractor is typically located underneath the right access step. To access it, you may need to remove the access step by taking out the attaching screws
Battery replacement steps
To replace the battery on a John Deere 4040 tractor, first remove any attachments, then disconnect the negative (-) cable followed by the positive (+) cable. Clean the battery and terminals, install the new battery, and reconnect the cables in the reverse order, ensuring tight connections. Wikipedia
Official information note
Mistakes do happen. Please check official deere.com website for official information.
