Battery salvage?

[DirtyNails]

Just given a 29 HMDC battery that was installed on a back up 12 volt sump pump. Pump never ran. Charger was faulty & battery discharged. Two years later, its mine.
It will not hold a charge.
Any ideas?
I have smart chargers, electrolyte ...

 

[snoobler]

Welcome to the forum.

Keep it as a core for when you decide to buy a new battery.