This is a 10.8V (Compatible with 11.10V), 3600mAh, Li-ion Battery, Dimensions: 130.60x72.30x25.50mm battery. Our THINKPAD 600 batteries are made with high quality parts and are guaranteed to meet or exceed the original equipment manufacturers specifications at a reduced price. We guarantee the battery for IBM THINKPAD 600 with a full one-year warranty from the date of purchase and 30-days money back if the battery(s) have any quality problem! We specialize in selling new rechargerable batteries. We are industry leader in OEM replacement batteries . We have always been dedicated to offering the highest quality batteries with factory direct price. Our batteries have passed strict quality assurance procedures to achieve international standards such as CE, UL Listed, and/or ISO9001/9002 certification. Purchasing from us means quality, so you can be sure your battery will powerful. We back our quality assurance with an unbeatable one year warranty with all new orders. Guarantee 100% security for your machines, high quality, high capacity and the lowest price!