Sanyo 2700Mah or Powerex 2700Mah AA Batteries

dekelsey61 · Oct 7, 2006

Tom(Silverfox)
Have you tested the Powerex 2700Mah AA batteries yet and how do they compare to the Sanyo 2700Mah? Also if you accidently leave AA batteries in a flashlight until it goes out will the batteries be any good anymore or is there something you can do to recover them? Thank you.
Dan

SilverFox · Oct 7, 2006

Hello Dan,

I have not had a chance to test the Powerex 2700 cells. I am in the middle of some cycle testing and developing the B90 NiMh replacement pack.

If your batteries do not take a reverse charge, and if you don't leave them empty for an extended period of time, they should come back fine. A forming charge of 0.1C for 16 hours is the best bet for reversing cell damage. If that doesn't work you can try a few charge/discharge cycles.

Tom

eebowler · Oct 7, 2006

I have three out of four Sanyo 2500mAh cells that are self discharging VERY FAST. I believe it's about three times that a single cell reached an open circuit voltage of 0.00V or there about during use. It's very likely that the three cells that are giving trouble now are the ones that were discharged way too much. (Or maybe I just recieved a crappy batch.)

wptski · Oct 7, 2006

eebowler said:
I have three out of four Sanyo 2500mAh cells that are self discharging VERY FAST. I believe it's about three times that a single cell reached an open circuit voltage of 0.00V or there about during use. It's very likely that the three cells that are giving trouble now are the ones that were discharged way too much. (Or maybe I just recieved a crappy batch.)

Funny as there is a thread about fast self discharging rates using Energizer 2500mAh cells!

BentHeadTX · Oct 8, 2006

I tested my Powerex 2700mAH AA batteries this week (see seperate post) From what I gather, the Sanyo and Powerex are the same batteries and give very impressive results. I get 2619mAH to 2673mAH on a Cadex battery analyzer with a sample size of twelve batteries. On the BC900, I get 2810 to 2910mAH in test mode.

Not sure how the Sanyos do but they are the same batteries so you should get similar results.

etc · Oct 21, 2006

They cost about the same as Thomas-Dist

Sanyo 2700Mah or Powerex 2700Mah AA Batteries

dekelsey61

Newly Enlightened

SilverFox

Flashaholic

eebowler

Flashlight Enthusiast

wptski

Flashlight Enthusiast

BentHeadTX

Flashlight Enthusiast

etc

Flashlight Enthusiast

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