DEWALT DC9144C 1 Hour Charger and 14.4-Volt XRP Lithium-Ion Battery DC9144 14.4-Volt XRP lithium-ion battery pack is compatible with DEWALT 14.4-Volt tools DEWALT exclusive NANO-phosphate lithium-ion cells offer long battery life; durability: 2,000 recharges Lightweight design- 1.5 lbs No memory and virtually no self-discharge for maximum productivity and less downtime DC9310 Charger Charges all DEWALT 7.2-volt-18-volt NiCd/NiMH/lithium-ion batteries (except Univolt batteries) so users need only one charger for multiple cordless products