AFL part S016780 refers to the BTR-09 battery plus DCC-18 battery charge cord bundle/ordering number used with Fujikura FSM-70/70R/19 series fusion splicers. The BTR-09 is a rechargeable Li-ion battery pack (approx. 14.8 V, 4.0 Ah) with a 4-step LED capacity indicator; the DCC-18 is the dedicated charge cord for the BTR-09.