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Can I Replace the Battery on a Xero S1
The Xero® S1 trapshooting trainer has a rechargeable, built-in lithium-ion battery. The internal battery is not designed to be changed or serviced.
If the device fails to charge, or power on.
1. Try a different usb micro-cable
2. Try a different power supply (computer or usb ac charger)
If those options do not work the Xero S1 trainer may need to be exchanged. Garmin Outdoor Product Warranty Policy and Repair Process