The Detachable Battery Pack, LTR-06L is used exclusively for Fujikura Arc Fusion Splicer, FSM-50S, FSM-50R, FSM-17S, FSM-17S-FH,and FSM-17R.SPECIFICATIONS Model: LTR-06L Type: LITHIUM Battery Output voltage: 13.2V Battery capacity: 8200mAh Battery charger: Exclusive Battery charger Expected battery cycle life: Max. 1000 cycles Battery capacity indicator: Available with 5-step LED Operating condition: -10 to +50 degree C / Non dew Dimension, Weight: 150W x 130D x 39H (mm), 0.53kg No.of FSM-50S splicer operation(Spliceing/ tube heating)£º200~250 cyclesUse for: FSM-50S, FSM-50R, FSM-17S,FSM-17S-FH,FSM-17R.