This TOSHIBA Pocket PC e350 Series Replacement Battery is 100% compatable with the L503759-TE3 TOSHIBA Pocket PC e350 Series Replacement Battery. Our batteries and accessories are made with high quality parts and are guaranteed to meet or exceed the original equipment manufacturers specifications at a reduced price. All batteries are tested for 100% quality control assurance. This TOSHIBA Pocket PC e350 Series Replacement Battery includes a warranty to guarantee that it has no manufacturing defects.