With most aftermarket laptop batteries I've tried, I'm lucky to get 6 months out of them. But when I tried an AGP battery, it lasted for over two years. Over the past several years I've ordered at least three AGP laptop batteries, and they've all lasted for two years or longer.
DELL Inspiron 6000 9200 9300 9400 E1705 XPS M170 M1710 Gen2 Precision M90 Replacement Battery, Compatible part number: 310-6321, 310-6322, 312-0349, 312-0350, 312-0425, 312-0339, 312-0340, 312-0348, G5260, G5266, C5447, C5974, F5635, U4873. The DELL replacement laptop battery is made using the highest quality cells available and utilize all of the proper logic boards, thermal protectors, thermistors and circuit breakers to ensure the highest levels of battery safety, reliability and efficiency,100% Original Manufacturer Compatible; also having the products liability insurance to ensure the quality of our batteries, you can have completed confidence on our products and rest assured to purchase with us!