Keep a spare Acer battery handy when you travel so you can keep working while your battery charges. This replacement battery is good for the Acer BTP-63D1 battery and fits Acer models Travelmate C300, C301 and C302. Battery features Li-ion battery, 14.8V, 4400mAh capacity. Compatible with Acer BT.00403.005, BT.00407.009, BT.00603.018, BT.00805.002, BT.00803.007, BT.T2803.001, Acer Aspire 3020, 3040, 3610, 5020, 5040, Extensa 2600, Travelmate 2410, 4400, C300, C310 Series notebooks.