How To Recover Battery Capacity. Battery capacity can be recovered though reactivation of the lithium ions not contributing to battery charge and discharge by combining battery diagnostics and electrochemical process. Your battery can still be used.

Because there are different ways to refresh and regenerate badly maintained batteries. For this it is necessary to fully charge the battery five times and then to. Also check for self discharge as this may be very high now.
This isnt always successful and you shouldnt attempt it with batteries that have been below 15 V for over a week but sometimes it will revive the battery.
The best way to extend battery life and performance is to drain the battery below 50 percent several times a week before recharging rather than discharging it on frequent short and shallow discharge cycles. Its battery allows using a screwdriver without the need to access to electrical outlets. Maybe if the separator plates have not deteriorated to much a slow charge at 01C for 16 hours may help restore them. I turned off Sentry mode at.
