I read about this and even did a search about it and nothing is specific. I understand its a over charge but all my chargers have self regulator.

You'll need to get one that has an option for equalizing

For batteries that aren't too gone you can  use a charger like the NOCO 3500 with it's repair feature. It's very well priced, has multiple charge profiles, and is also a good tender if needed. 

 

I've equalized a few batteries with it, and use it to keep my '18 charged when I don't drive it. 

Edited January 11, 20205 yr by AH64ID

Poor man you can use a normal 200 amp battery charger but you have to mind the charging amps and charging volts. I've taken a few completely dead batteries and brought them back to life and about 80% to 90% capacity again. The whole trick is bring a 12V battery up to 15.5 Volts till the amperage drops near zero. Then back down to a normal 2 to 10 Amp charge. Best to keep the caps off and mind your electrolyte levels while charging.

 

My house inverter (solar system) provides a equalize charger too. I can just hook up to it and do a longer and slow method of equalize that works even better. Being its a 24V system I can do a equalize for 6V or 12V batteries too. It's also a 200 Amp charger as well but I've got it limited to 1 AC amp which is roughly 5 Amp at 24V. Then its set up on a timer as well.