Since the Sidekick 3 and newer models, the battery can be easily removed and replaced.

This is great news because the Sidekick 3 has a charging issue that crops up after awhile. It will just not charge the battery. If you are under warranty, great! Send it in and get it fixed. If not, buy an extra battery and a external charger cradle. It will set you back about 40 dollars but it that is a lot better than the 100+ it will cost to fix it!

 

Just make sure you power down your Sidekick 3 before removing the battery. This make sure all the data is stored to the flash memory. If you do remove the battery while the unit is on, it will cause a hard reset and you will have to wait for your data to download again!

Follow the link below for batteries.

Sidekick Spare Batteries

When looking at a cradle, make sure it says it has a spare battery charger. Some of the Sidekick Charging cradles don't. If eBay is out of the right cradle, look for this one on Amazon.