Experiences are split: some fully powered-down units held their percentage for days, while others lost substantial charge within 24 hours or over several weeks.
Pros: overall product satisfaction, AC charging speed
Cons: runtime, high-demand appliance support
Two long-term users reported the battery draining in roughly three to four days without meaningful loads, a serious issue for unattended backup.
Pros: overall product satisfaction, solar panel compatibility
Cons: long-term reliability, standby power loss
One owner reported severe charge loss while the unit was switched off, making standby storage unreliable in that case.
Pros: overall product satisfaction, portability
Cons: specification accuracy, display readability