12 Volt 21 Watt Sealed Lead Acid Rechargeable Battery Will replaces these OEM batteries: BF400, DJW12-5.5, HC1217W, LP12-6H, LP12-6H-NT1/PT2, PS-1251FP, RBC10, RBC21, SLA0093, SLA0128, SLA0138, SLA1031, SLA1053, SP12-5.5RT, TH1221WB, WP1221W Rechargeable, recyclable, and no memory effect. Terminal Plug-in Positive Terminal is F2 (1/4") and negative Terminal is F1 (3/16") 12V, 5.5Ah (21 Watt); 5.5"L x 1.89"W x 4.07"H 1 Year Warranty