Replacement batteries fit Norelco razor models 282XL, 300SX, 400DX, 605RX, 825RX, 835RX, 875RX, 885RX, 905RX, 915RX, 935RX, 945RX, 955RX, 965RX, 985RX, 3801XL, 3805XL, 3865XL, 4608X, 4625X, 4805XL, 4807XL, 4816XL, 4817XL, 4821XL, 4825XL, 4845XL, 4852XL, 4853XL, 4861XL, 4865XL, 4885XL, 5602X, 5603X, 5605X, 5801X, 5802XL, 5817XL, 5821XL, 5822XL, 5825XL, 5841XL, 5842XL, 5845XL, 5848XL, 5849XL, 5855XL, 5861XL, 5862XL, 5863XL, 5864XL, 5865XL, 5867XL, 5885XL, 5886XL, 5887XL, 6701X, 6705X, 6706X, 6709X, 6711X, 6716X, 6735X, 6737X, 6756X, 6826XL, 6828XL, 6829XL, 6846XL, 6848XL, 6863XL, 6865XL, 6866XL, 6867XL, 6885XL, 6886XL, 6887XL, 7616X, 7617X, 7735X, 7737X, 7745X, 7775XL, 7825XL, 7845XL, 7864XL, 7865XL, 7866XL, 7867XL, 7885XL, 7886XL, 7887XL, 8825XL, 8831XL, 8845XL, 8846XL, 8865XL, 8867XL.

Fixes most problems with the shaver not holding a charge, not taking a charge, or running down very quickly.

Replaces Norelco original part number 4822-138-10334.