https://slavyanski.net/sb2020/story.php?title=battery-reconditioning-basics When the battery is nearly completely discharged, not totally released, totally charge the battery. You will certainly not be able to recover them permanently however you will prolong their life by a fair bit. Always make sure to wear safety devices prior to dealing with them as they are chemically responsive. Tue, 28 Jun 2022 20:21:47 UTC en