Electric shaver battery BT-2AA.
Electric razor battery, double A 600 nicad cells, side by side. Fits Norelco electric shaver models: 300SX, 400DX, 605RX, 650TX, 665RX, 825RX, 835RX, 875RX, 885RX, 905RX, 915RX, 955RX, 965PE, 965RX, 968RX, 885RX, 915RX, 935RX, 945RX, 985RX, 3805XL, 4805XL, 4816XL, 4821XL, 4825XL, 4845XL, 4865XL, 4853XL, 4852XL, 4817XL, 4807XL, 4625X, 4885XL, 5615X, 5655X, 5801XL, 5821XL, 5822XL, 5825XL, 5841XL, 5845XL, 5848XL, 5861XL, 5865XL, 5885XL, 5867XL, 5864XL, 5863XL, 5862XL, 5849XL, 5855XLD, 5842XL, 5887XL, 5886XL, 4825XL, 6735A, 6735X, 6756X, 6716X, 6711X, 6709X, 6706X, 6705X, 6701X, 6826XL, 6846XL, 6863XL, 6865XL, 6885XL, 6886XL, 7775XL, 7825XL, 7845XL, 7845XL, 7865XL, 7885XL 8845XL, 8825XL, 8845XL, 8865XL, 8880XL, 8890XL. Also fits some older Remingtons shavers.