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kierkegaank | 1 years ago (raw) | root | parent | reply | flag 
 @2fd7551e What’s the expected lifetime of the storage at a reasonable nominal effect?
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Terence Eden | 1 years ago (raw) | root | parent | reply | flag 
 @f6300c6e the battery unit is guaranteed for 7 year.

Or do you mean "how long can it hold a full charge?" In which case, I don't know. It usually cycles every day but has a battery management system to ensure even use.