Internal batteries need to be kept charged, charged monthly as maintenance of the unit. Batteries may have gone dead from lack of use and maintenance. troubleshoot: https://www.manualslib.com/manual/759749/Schumacher-Electric-Instant-Power-Xp2260-Ca.html?page=8#manual
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Internal batteries need to be kept charged, charged monthly as maintenance of the unit. Batteries may have gone dead from lack of use and maintenance. troubleshoot: https://www.manualslib.com/manual/759749/Schumacher-Electric-Instant-Power-Xp2260-Ca.html?page=8#manual