We at Laptop Battery Teksus do not recommend or sell used laptop batteries. Buying a used laptop battery is like buying a used car battery and won’t improve battery time much more than your current one. The life of a rechargeable laptop battery is about 300 to 500 charge and recharge cycles, or about 3 years. A used laptop battery may not be any better than the non-functioning one you are currently seeking to replace. And compared to the cost of a brand new replacement laptop battery they are not a bargain.