I have safely recovered low voltage lipos using Niamh setting on my charger a few times
If there going to recover it will happen very quickly
Watch voltage on each cell once it rises above 2.5 volts terminate charge and switch to Lipo charge as normal but at a lower current rating
If voltage on low cell does not show signs of rising in a few seconds from starting charge abort mission it's dead
DO NOT ATTEMPT THIS IF YOU ARE NOT CONFIDENT ABOUT WHAT YOU ARE DOING AND PREFERABLY OUTSIDE AND DO NOT LEAVE UNATTENDED
OF COURSE SAFEST OPTION IS MARK'S ADVICE AND RECYCLE THEM SAFELY AND REPLACE THEM WITH NEW BATTERIES
Dave
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