One laptop model often exists in several versions, so a battery is chosen by the manufacturer code on the old one — AP13J3K, C21N1347, WJ5R2 or BT04XL — not by the name of the computer. The list holds original ACER, ASUS, DELL and HP batteries; capacity is given in both mAh and Wh, and it is the watt-hours you should use when comparing models. If the machine only runs while plugged into the mains, that is usually the first sign the battery needs changing.
Find accessories for your phone
Select manufacturer and model
One laptop model often exists in several versions, so a battery is chosen by the manufacturer code on the old one — AP13J3K, C21N1347, WJ5R2 or BT04XL — not by the name of the computer. The list holds original ACER, ASUS, DELL and HP batteries; capacity is given in both mAh and Wh, and it is the watt-hours you should use when comparing models. If the machine only runs while plugged into the mains, that is usually the first sign the battery needs changing.