If you are in the USA/CA/JP, you can choose to buy from www.xtucam.com and ship from the amazon warehouse, but you can't enjoy a return and exchange service. Actually, the battery is almost not any quality problem and don't need to ask for after-service. You can also buy from amazon stores and enjoy Amazon's service.
If you are in the rest of the world, you need to look for a similar battery in your local market. If you can't make sure which brand's battery can compatible with the XTU action camera, just directly contact us.