Does anyone have an estimate of how long something like this would hold its charge when it is being stored (you charge it up, without use how long would it holds its charge)
I don’t have this particular thing, but I have a similar device from Anker (Powerhouse 400) that will hold its charge for months as long as the display if off.
I do lots of projects with used lithium ion batteries and I’ve found that some cells will self discharge from full to ~85% over the course of a few months and others I’ve left sit for over 6 months and was shocked to come back to them fully charged still.
I’d expect a product like this with new batteries to hold its charge >90% for 6 months.
This my friends is a great deal
The instructions say to fully charge it every 6 months