TOPCHANCES 3.6V 800mAh Replacement Cordless Phone Battery for Vtech 80-5071-00-00 Radio Shack23-298 23-9107 43-0689 43-1089 43-1097A 43-1098 43-2218 43-3504 43-3505 43-3507 NI-CD Battery Voltage:3.6V, Capacity:800mAh 100% compatible with original manufacturer equipments and chargers This replacement battery has an integrated microchip that prevents overcharging and lengthens battery life 30 days money back and 12 months warranty