Get more life out of your Dell Axim Handheld with a second lithium-ion battery. Lithium-Ion batteries are longer lived than conventional batteries and do not require replacement as often. There is no battery memory effect with a lithium-ion battery you can charge the battery whenever you like without fear of reducing its charge capacity. Moreover, you do not need to drain a lithium-ion battery completely before recharging it. A secondary battery allows you to work for longer periods without having to connect your handheld to a power outlet. This Lithium-Ion Secondary Battery has been tested and validated for your Dell Axim X50/X50v Handhelds. It is supported by Dell Technical Support when used with a Dell handheld.