Compaq tc4200 rechargeable battery for laptop or notebook made from high quality laptop battery cells, though this compaq tc4200 battery is not a original one, it passed the CE, UL, and ISO9001/9002 certifications, with full one year warranty and one month money back commitment, you can rest assured to purchase. You should notice that we provided a laptop ac adapter or charger for some notebook batteries, buy them together with the battery pack will save more money. Join discussion...