SLA Battery Conditioning Methodology?

[sucahyo]

Hi sucahyo, i've seen that very thing with a 12v 7ah sla. It needs more conditioning, if it can be recovered. One or more cells are shorting when it drops like that, i think.

Yes, I think one cell is broken.

The periodic voltage drop is weird. Voltage drop few seconds every few minutes. Is there explanation for this weird behaviour?

[SkyWatcher]

Hi sucahyo, my thinking is that if one or more cells are shorting then its an intermittent shorting going on, not like a clean short of a fuse. But i think its a positive sign that crystallization is being dislodged, keep at it and see what happens. Hope that helps.
peace love light
Tyson

[sucahyo]

Hi sucahyo, my thinking is that if one or more cells are shorting then its an intermittent shorting going on, not like a clean short of a fuse. But i think its a positive sign that crystallization is being dislodged, keep at it and see what happens. Hope that helps.
peace love light
Tyson

Ok, thanks, I will keep charging and discharging it and report again.

[sucahyo]

Reviving dead battery

Here is an attempt to revive completely dead battery. I regret I don't record the empty amp draw, it should be 0.02A.
YouTube - Dead battery revival experiment with radiant charger

Still have 0.08A discharge current after 30 minutes. Charger input current is 1.2A at 12.5V, and output current shown in video maybe at 16V or so....

Maybe not overunity but at least the circuit CAN charge a dead battery .

[sucahyo]

Charging discharging

Charging 550mA in two minutes allow power for 3 minutes.
YouTube - 2 minutes charging for 3 minutes of power

Circuit input current is around 1-1.2A at 12.5V. output voltage is around 10.8 to 13.5V. Anyone don't know about radiant think that it is overunity?

[elias]

Yes I have seen this effect too on some of my batteries. It drops down and then starts driving the load.

I found that SLA can develop phantom emptyness. The battery show empty behaviour and then suddenly show full charge a minute later.

I think this is because I keep charging it without ever discharging it. This is my second battery that show this behaviour.

YouTube - phantom empty

[juju]

batery conditioning

Hello guys,

i have a 12V 7Ah Battery that is dead! i take it from a damaged UPS, a device for storing energy/protect a computer when the electric grid shut down!

the battery only showed 6V, i try a normal charger transformer over night and the battery is the same.

i tryed to charges over night with the bedini SGG in self oscillation and the battery dont take any charge... the standing voltage is 6 V, but when i put it on load will show 2,5V but it barely cans light a led!

what should i do?

[SkyWatcher]

Hi juju, in my case i am using a bedini self oscillator variant that does not use the base to ground resistor. It works better than joule thief at these higher voltages, because my joule thief transistor tends to heat up more. Of course its a bifilar coil using the output off the flyback diode to rejuvenate the battery. From what ive seen, these sla batteries can dry out and you would never bring the battery back if that's the case without refilling it, however if its not dried out in any of the cells then you may have a shot at desulphating it and repairing any possible crystal growths causing a short in a cell, though this takes time just as it took time to get the way it is now. Hope that helps, for now.
peace light love
Tyson

[nvisser]

Brake the top cover or covers off. Remove the rubber caps and fill the cells till the top of the plates with distilled water. Leave the caps off while conditioning.
Dead ups batteries never really come back to full life, but I can get some use out of them if charged with radiant spike only. The moment you charge them with strong cap pulsars they die completely.
Ups batteries that still sits on 11.5V are usable after conditioning.
It looks like dead batteries recover better with a high voltage, low amps. At first the voltage over the charging battery will be high but it will gradually drop to under 12V as it desulphates and then it will pick up to 12V.

[juju]

hi tyson

thank you!

i dont put the resistor at the base to, hi just use an higher resistance trigger coil...

the problem may be the battery went dry...

i was thinking that was dangerous to open that valves in the battery, it may have acid?

i dont know nothing in this matter , can you advice me how to proceed and with what liguid should i reffil it?

hugs

[juju]

eheh

Brake the top cover or covers off. Remove the rubber caps and fill the cells till the top of the plates with distilled water. Leave the caps off while conditioning.
Dead ups batteries never really come back to full life, but I can get some use out of them if charged with radiant spike only. The moment you charge them with strong cap pulsars they die completely.
Ups batteries that still sits on 11.5V are usable after conditioning.
It looks like dead batteries recover better with a high voltage, low amps. At first the voltage over the charging battery will be high but it will gradually drop to under 12V as it desulphates and then it will pick up to 12V.

you answered my question just before i posted,

thank you nvisser

[Xenomorph]

Hello guys,

i have a 12V 7Ah Battery that is dead! i take it from a damaged UPS, a device for storing energy/protect a computer when the electric grid shut down!

the battery only showed 6V, i try a normal charger transformer over night and the battery is the same.

i tryed to charges over night with the bedini SGG in self oscillation and the battery dont take any charge... the standing voltage is 6 V, but when i put it on load will show 2,5V but it barely cans light a led!

what should i do?

If the suggested tips shouldn´t work for you.
I had exactly the same situation, a SLA sitting at 5.5 Volts that would not keep any charge.
Finally i managed to get it up to 12 Volt by charging it using a one magnet Bedini with a negative time charge with the circuit being in resonance.
I can only speculate why it works better at resonance, but the result is pleasing.

[sucahyo]

the battery only showed 6V, i try a normal charger transformer over night and the battery is the same.

i tryed to charges over night with the bedini SGG in self oscillation and the battery dont take any charge... the standing voltage is 6 V, but when i put it on load will show 2,5V but it barely cans light a led!

Pry it open and add water. If you don't refill it, you will kill it more with radiant.

Radiant push more current to the battery compare to straight DC. This can be seen using electrolysis cell, since battery work the same way as electrolysis cell. On same electrolysis cell, radiant will allow the cell to use more current than when using straight DC:
YouTube - Proof radiant force more current to battery or electrolysis cell


Yes it will have acid, but nothing dangerous. Just wash your hand if you get spilled back by it. Put more attention to produced hydrogen bubble. Put fan in front of battery or put aluminium on top of it.


Connect it to bedini type charger until you hear a pop (I put every rubber cap and the lid back), a sign of serious bubbling from full charge. With my 600mA radiant output it takes about two hours.


I have two useable battery sitting at 10V. And two that will self discharge very quickly and sit at 2V, can lit a lightbulb right after charging, but not next day.

I think you need current too. I notice that with 600mA charge the battery can lit lightbulb at 1.1 for an hour which I think very nice considering it only lit up less before. This is the one that pulsating before, still do that, but seems less frequent. 600mA is C/10 of 7Ah. Since it is an already dead battery, let see what will happen .

Never leave the battery in empty condition.