2-Pack Logitech NTA2340 Battery with Universal Charger (100/240V)- Replacement Logitech R-IG7 Universal Remote Battery and Charger Replacement Logitech NTA2340 Battery and Charger Universal Charger features adjustable slider to charge different lithium-ion batteries (3.6V/3.7V). 100-240V autosensing for world wide use. Lifetime Warranty Logitech R-IG7 Battery Specs - Capacity: 950mAh, Voltage: 3.7V, Upstart Battery Brand On Sale for a Limited Time!