|Product ID: SS9786|
|Weight: 0.25 kg|
Generally, the GEO 1 doesn't need a charge controller due to the size of the solar panel. GEO 2+ need a charge controller to stop the overcharging. We'd only recommend a charge controller for the GEO1 if you thought you'd frequently overcharge the battery.
It may be as a result of low charge in the battery. Leave the system off for a few days of good sun and then try again and see if the problem persists.