I'm looking for a larger capacity powerbank even if it's not holding as much charge eg a 7500maH, 10,000maH or even a 20,000maH powerbank that you can no longer rely on outside the home because it won't charge as much as it originally did when you bought it and it seems daft to carry such a large brick for it to only charge a phone once!
It can't be completely broken, though, as it needs to hold some charge as I'm not planning on fixing it.
For a solar power project.
