Charging a Completely Discharged 6V Gel Battery: Abega 12 Experiences and Suggestions

abega 12. I am new to the forum. I have a problem with the 6v gel battery, it is completely discharged and I can not charge it in any way. I would like to ask forum members for advice - can anything be done about it? greetings

It's best to energize it with a regulated power supply, controlling the charging current.

abga wrote:

Can I charge a completely discharged 6v gel battery?

If it was briefly discharged, it could be done. Of course, 100% capacity will not have.

abga wrote:

I can not realize it in any way

And how do you "implement"?

Most automatic chargers will have a problem, the easiest way is to use a 6V (or slightly higher) power supply and switch on the bulb (6V) in series with the battery - when the bulb goes out you can use the automatic charger.

rafal35 wrote:

It's best to energize it with a regulated power supply, controlling the charging current.

You can too.

I will share my humble experience. Often, a completely discharged battery absolutely does not want to take electricity. To resuscitate such batteries, I use an adjustable rectifier with a maximum voltage of 30V. The charging process should be under absolute control !!! Often the battery, even 6V, starts to charge at practically the maximum voltage of 30V! The current slowly increases and its voltage should be controlled and the rectifier voltage reduced. When the battery voltage stabilizes at the nominal level, extend the charging process with the nominal current for a specific type of battery. After increasing the voltage to maximum, discharge the battery to the minimum voltage. The charging and discharging process will repeat 2-4 times. Finish the cycle with charging to the maximum voltage with the nominal current within the recommended time. Regretfully, not all batteries seem to be resuscitated.

And I connected the regulated power supply and gradually increased the voltage to the buffer charging voltage (for a 6V battery it is 6.7-6.9V). And I left for a month.

Unfortunately, all attempts to resuscitate failed, I was forced to buy a new battery.