We at BatteryMill now offer a 10 year guarantee on all our batteries. This is 9 years longer than anyone else and will give you the peace of mind that a battery from us will outlast any others and probably outlast the device itself
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All devices that require an opening tool kit are provided one of these for free along with the battery. They contain 5 different tools so you can easily replace your new battery by yourself. We sometimes also offer instructions for a number of the more difficult battery installations, found under our instructions tab