Axiom 2Pack Rechargeable Battery For V-Tech DS6101, DS6111, DS6121, DS6121-3, DS6121-4, DS6121-5, DS6151, DS6201, DS6211, DS6211-2, DS6221, DS6221-3, DS6301, DS6321-4 Long-Lasting Axiom Ni-MH Rechargeable Battery Capacity(Power): 850mAh Over-voltage and Short-circuit Protection No Memory Effect Package Includes: 2x Axiom Cordless-phone Batteries