,"Slowly changing the world, one watt at a time!"[ Parent ]
I doubt that anything does much for mossing. Probably a good application of a heavy discharge tester and a severe boost charge is the only chance. Possibly a high power pulse so called desulphator may have similar effects, but the pulses need to be really high current.
Some spend their lives trying to salvage scrap batteries they must have more luck than me, I gave up long ago.
Flux[ Parent ]
Decent 2v cells normally have a long life but I have come across batches from two different manufacturers that had early failure from corrosion of the positive link bars, no doubt due to some change in the manufacturing process.