What happened to my JSB protected R123 batteries!

[Luxbright]

Hope someone out here can explain what happened to my JSBurly's protected R123s.

I bought 4 pcs of the yellowish-orange rechargeables with a charger in October 2004 and had them charged once. Two pcs. were left in a drawer fully charged for about 5 months but when I tried to use them in my L1-PR-T it wouldn't light up the light.

Checked the voltage with a Meterman 34XR DMM and one is 3.85v and the other is 4.05v. Put them in the charger and the LED remain green.

The 2 pcs. using in the L1 PR-T are 3.85v and is working.

Put these working units in the charger and the LED turns to red, indicating charging.

What do you think happened the the other 2 pcs.

Thanks

 

[wptski]

[ QUOTE ]
Luxbright said:
Hope someone out here can explain what happened to my JSBurly's protected R123s.

I bought 4 pcs of the yellowish-orange rechargeables with a charger in October 2004 and had them charged once. Two pcs. were left in a drawer fully charged for about 5 months but when I tried to use them in my L1-PR-T it wouldn't light up the light.

Checked the voltage with a Meterman 34XR DMM and one is 3.85v and the other is 4.05v. Put them in the charger and the LED remain green.

The 2 pcs. using in the L1 PR-T are 3.85v and is working.

Put these working units in the charger and the LED turns to red, indicating charging.

What do you think happened the the other 2 pcs.

Thanks

[/ QUOTE ]
I have a similiar thread look here: Thread

You lost me a bit. After putting them back in the charger, they are okay now? Sounds like you triggering the protection circuit somehow but if you trigger the LVC it'll read zero volts till you put it back on the charger which resets the circuit. I'm not sure how the cell would read if overcurrent protection was triggered.

If you had a light that you could use a single cell in, you could narrow it down to one cell.

EDIT: After rereading you post I understand more. One cell reads much higher than the other and they won't recharge. The cell governs the charge, so it has to be the cell. One of my problem cells won't charge past 3.8V on a Duratrax ICE charger but will on the Triton. So far, swapping my cells in lights hasn't proved anything.

I wonder if the fact that one cell is charged much lower than the other has something to do with it? My situation could be the same too since one cell "might" have been undercharged too.

 

[Luxbright]

Yes, one of the cells read 0v and the other one's voltage continued to drop by itself, from 4.05v to 3.05v now. It's late now, will put them individually in the charger tomorrow and see what the outcome will be.

Thanks for sharing.