The John Deere 4240 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 4240 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 4240 Battery FAQ
Replacement battery recommendation
The best replacement batteries for a John Deere 4240 tractor are two 12-volt Group 31 batteries, which provide better starting power compared to the original two 6-volt batteries. This upgrade can significantly improve the tractor’s starting performance, especially in cold weather
Battery voltage
The official battery voltage for the John Deere 4240 tractor is 12 volts
Battery group size
The official battery group size for the John Deere 4240 tractor is Group 31. This size is commonly used for 12-volt battery configurations in this model
Battery CCA
The recommended official John Deere 4240 tractor battery has a Cold Cranking Amps (CCA) rating of 850
Battery location
The battery on the John Deere 4240 tractor is located underneath the right access step. You may need to remove the access step to access the battery
Battery replacement steps
To replace the battery on a John Deere 4240 tractor, first, locate the battery underneath the right access step and open the flap. If necessary, remove the access step by taking out the attaching screws, then disconnect the battery cables before installing the new battery
Bad battery symptoms
Common symptoms of a bad battery in a John Deere 4240 tractor include the battery not holding a charge, slow cranking of the starter, and low voltage readings. Additionally, you may notice a voltage indicator displaying low battery voltage when the key is on and the engine is off
Official information note
Mistakes do happen. Please check official deere.com website for official information.
