6v 310 ah battery bci size 902 voltage 6 volt deep cycle case material polypropylene hea t sealed 20 hour rate 310 minutes of discharge 75 amps 195 minutes of discharge 25 amps 715 le ngth 11 88 302mm width 7 12 181mm height 14 60 371mm weight 90 lbs make u s battery crown trojan warranty period 24 months after the date of delivery