12V BCI Group 47 AGM Powercell Battery.
Can be used as a reserve and/or starting battery.

Specs:
Voltage : 12V
Wattage: 2000W / 3000W
MAX Amps: 2900
CA: 760A
Ah: 62
RC: 110min
 
Dimensions:
Weight Lbs.: 41.19 lbs
Weight Kgs.: 19.14 kgs
Length: 9.49 in
Height: 7.48 in
Width: 6.93 in
 
M6 Terminal Hardware Included.