Get more life out of your Dell Axim Handheld with a secondary 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. This high capacity 3400 mAh battery provides extended battery life while on the go. It allows you to work for longer periods without having to connect your handheld to a power outlet. This Secondary Battery has been tested and validated for your Dell Axim X5 Handheld. It is supported by Dell Technical Support when used with a Dell handheld.