DEWALT DC9180C 18-Volt Battery Pack & Charger DC9180 18V XRP Li-ion battery pack, compatible with DEWALT 18V tools Provides long run-time & battery life Lightweight design - same weight as an 12V NiCd battery No memory and virtually no self-discharge DC9310 Charger Charges all DEWALT 7.2-volt - 18-volt NiCd/NiMH/Li-Ion batteries (except Univolt)