info about batteries on the sg

[elias]

You should use distilled water for this purpose

Thanks,

I used distilled water, and it seems that the battery is sulfated pretty much. It has high impedance I suppose, because it is unable to absorb the spikes very much. The meter reads about 1mA going to it. The voltage of it is rising slowly, which was 1.5 volts at first, but now it is at 7 volts. Has anybody got any experience like this? I hope that the charging process brings down the impedance of the battery.

[Sephiroth]

I got 5 "dead" batteries the other week and have been trying to recover them on the SSG

2 of them were at 0.5v. I left one on the SSG for two days and the voltage got to about 7 or 8 (can't remember off the top of my head) and then started charging REALLY slow (it would have taken about 2 weeks for it to reach 13V) so I have left those 2 batteries for now.

the other 3 were between 10 and 12.7 volts resting though the guys I got them off say they wouldn't power a wheelchair anymore.

I put one on the SSG by itself (a 31ah gel cell) and within 2 days it was up to 14.5 vols.

the other two (a 33ah and a 38ah sealed lead acid batteries) I connected in parrelel (with seperate diodes)... 1 was back up to 14.8 volts within 3 days so I took it off and let the SSG charge the last battery by itself which took another day to get back up.

All the batteries were cold boiling for several hours before I stopped charging.

This morning I have hooked the gel cell up as my primary and stuck the other two charging along with 2 of my old (well conditioned) 7.2ah batteries I've hooked together to make a 14.4ah battery and the gel cell seems to be holding it's charge pretty well (even with just a single charge!)

It has dropped 100mv in just under 8 hours (approx 10mv every hour) and is currently at 12.78v. Unfortunatly I don't have a working dc ammeter to see what the current draw is but judging from the voltage drop it would be about 550ma if the battery was in perfect condition (ie. a 31ah battery). Last time I checked this motors current draw it was 950ma (though it wouldn't suprise me if was closer to half an amp now... made a few improvements to the rotor)

So it looks like the Gel Cell is alive and kicking ! Have to wait and see how the lead acids do! Good luck with yours!

[theremart]

Cool Chart

I looked at this chart, and it was an eye opener for me. It showed me to get real results of charging old batteries you are talking days of charging to get to be super charged batteries.

from ->
Directory:Bedini SG:Replications:Gerhard Flemming - PESWiki

[elias]

Charging laptop batteries

Has anyone tried charging laptop batteries, with the Bedini charger? I have decided to do this test. It is interesting to see how a much longer a laptop functions with a Bedini charged cell.

[gabriolaman]

some laptop batts have protection and if hit with a high voltage may fry the batt but im not to sure radiant is wierd

[geron]

Since I missed the answer until now, my question again for using / charging NiCd / NiMh batteries and their "healing"or if this only works with lead batteries.

thanx for replying

geron

[ren]

Elias be careful charging Li-ion batteries. I suggest to anyone thinking of charging anything but a lead acid battery to google around and learn a little of the chemical processes involved. If you still want to go ahead then build a little shield out of wood or steel to cover the battery while it charges. I tried some Nickel metal Hydrides (Ni-MH) and they heated up really fast and have never been the same since. I stuck to gel and wet acids since.


One interesting thing I did learn about Nicads is this however. You can fast charge certain types at a 1 to 1 ratio, perhaps this is how the cigar box Tesla switch can work as I believe it used NiCads.

[elias]

Thought to share this page about batteries:
Table of Contents for Batteries in a Portable World

[gabriolaman]

i got this dead dead battery and i have no idea what state its in im trying to revive its lead acid car battery when i put it on my sg it instantly shot to about 15v no its slowly decreasing its at 11.73 and falling im wondering if anyone else who has tryed to fix a dead bat has any info i could eat up im just worried some a the cells in the battery could be shot and i might over charge and have it blow up in my face


thanks for any help

[elias]

Hi

I have started recovering a dead battery (55Ah 12volt cell) for about 5 days and this is what I found:

At first it was at about 6 volts, and had an impedance of about 200 ohms, pretty dead. As I attached it to my SSG it went up to 15 volts and came down as the impedance was changing. It has gone down to 9.5 volts, when charging at the present moment. It has a sitting voltage of about 8.25 volts, with an internal impedance of about 2 ohms now. This battery is coming alive I suppose, and I'll leave it there until it comes up to 13-14 volts. I would love to see this dead battery recover. I have also noticed that the impedance does not steadily decrease, It increases sometimes momentarily and then decreases again, which is noticeable with the speed of the SSG. I think that the voltage rises stage by stage as a barrier of impedance is lifted, and the battery capacity goes up.

A comment from Bedini: "You noticed that the battery voltage went up to 25 volts and then came down. This means that the battery impedance is changing and the battery is taking the charge ... Then the voltage of the battery rises all of a sudden and the battery is charged".

Don't be afraid, just cover your batteries with something to avoid spitting the acid all over the room in a case of a blast and watch them come alive.

Elias

[Ewhaz]

Yea I noticed the voltage jump the other day on my system. I stopped charging it after 12 hours of running because I don't like to leave it while I'm not around to watch it. When I hooked it back up the next day, I tested it within the first few minuets and watched as the voltage started to climb from like 13.4v to over 15. I wasn't sure what to do so I disconnected it and assumed the battery was charged.

However, I'm using a system with the capacitive discharge charger and it is very very slow charging. It's taking over 12 hours for the system to charge a battery off another. I hope this begins to improve with the system getting conditioned.

[theremart]

I picked a battery up that at .05 V when I got it ( car battery found by the road about last week )

I kept it on the SSG for over 5 days. Now it goes up to over 14V on charge and has a resting voltage of 12.3 V. It still needs more work, but still impressive how dead batteries find new life.

I have found keeping the battery on the SSG for days is the main way of getting them back into shape. I have brought 3 others up to 13V when charging, and normally about 12.6 when resting.

Today I have nearly completed putting empty windmill coils on the ssg. I still need to work out the bugs, but getting there... getting there.

Mart

Hi

I have started recovering a dead battery (55Ah 12volt cell) for about 5 days and this is what I found:

At first it was at about 6 volts, and had an impedance of about 200 ohms, pretty dead. As I attached it to my SSG it went up to 15 volts and came down as the impedance was changing. It has gone down to 9.5 volts, when charging at the present moment. It has a sitting voltage of about 8.25 volts, with an internal impedance of about 2 ohms now. This battery is coming alive I suppose, and I'll leave it there until it comes up to 13-14 volts. I would love to see this dead battery recover. I have also noticed that the impedance does not steadily decrease, It increases sometimes momentarily and then decreases again, which is noticeable with the speed of the SSG. I think that the voltage rises stage by stage as a barrier of impedance is lifted, and the battery capacity goes up.

A comment from Bedini: "You noticed that the battery voltage went up to 25 volts and then came down. This means that the battery impedance is changing and the battery is taking the charge ... Then the voltage of the battery rises all of a sudden and the battery is charged".

Don't be afraid, just cover your batteries with something to avoid spitting the acid all over the room in a case of a blast and watch them come alive.

Elias

[terence123]

metal hybride batteries do recover

Hi,

I have a rechargeable shaver. Has 1 1.5V metal hybride battery in there.

When it was new, I could shave at least 15 times with it before a charge was needed. It is now about 3 years old and I could shave not even 1 full time with it when it was fully charged. I put it on my solid state bedini charger. Battery charged at 2.3Volts. Now, after the first charge (couple hours), I shaved 3 times already and it still works!
I cut the plug from my original shave charger and used it to hook up the ssc.
So now i do not have to open the casing for the next charge. The battery did not heat up during the charge....

[elias]

I picked a battery up that at .05 V when I got it ( car battery found by the road about last week )

I kept it on the SSG for over 5 days. Now it goes up to over 14V on charge and has a resting voltage of 12.3 V. It still needs more work, but still impressive how dead batteries find new life.

I have found keeping the battery on the SSG for days is the main way of getting them back into shape. I have brought 3 others up to 13V when charging, and normally about 12.6 when resting.

Today I have nearly completed putting empty windmill coils on the ssg. I still need to work out the bugs, but getting there... getting there.

Mart

Very Impressive,

My Battery is on the SSG for about more than a week now, but it has a resting voltage of 8 volts and it goes upto 9volts when the SSG is connected. I don't know if this has hope or not. Although it seems that the impedance of the battery is dropping over time.

Elias