Geo-TH,In
Well-known Member
Guido,
I ended up with my late mother's electric wheel chair. It has 2 12v sealed lead acid batteries. One is a strong 12v the other shows 10v, but when you put a small load of it, the voltage drops to 6. I would have thought these batteries would be Ni-cd, but it says sealed lead acid.
Both batteries are wired in series. Both are charged in series too, making 24v.
Lately the one battery self discharges extremely fast, a few days.
Well I decided to flat line the bad battery by using a 12v tail light bulb. After that battery is dead, I plan to wire the good battery in parallel with the dead battery, so the good battery will discharge and recharge the bad one, equalizing the charges. I'll monitor the charging/discharging rate and keep it under 3 amps, the charging current of the charger.
Then I may charge each battery using a 12v charger and limit the charging current to 2 amps.
I may try using a batteryminder12248 and run it through a desulfating cycle. What are the chances of this will bring the dead battery back to life? I don't have much hope.
George
I ended up with my late mother's electric wheel chair. It has 2 12v sealed lead acid batteries. One is a strong 12v the other shows 10v, but when you put a small load of it, the voltage drops to 6. I would have thought these batteries would be Ni-cd, but it says sealed lead acid.
Both batteries are wired in series. Both are charged in series too, making 24v.
Lately the one battery self discharges extremely fast, a few days.
Well I decided to flat line the bad battery by using a 12v tail light bulb. After that battery is dead, I plan to wire the good battery in parallel with the dead battery, so the good battery will discharge and recharge the bad one, equalizing the charges. I'll monitor the charging/discharging rate and keep it under 3 amps, the charging current of the charger.
Then I may charge each battery using a 12v charger and limit the charging current to 2 amps.
I may try using a batteryminder12248 and run it through a desulfating cycle. What are the chances of this will bring the dead battery back to life? I don't have much hope.
George