weird energizer aa lithium issue!

[raggie33]

its dimmer then basic aa akaline battery in my zebralight. anyone know why?.

 

[Mr. LED]

Shouldn't be, check the voltage or try another one.

 

[raggie33]

tried 3 of them from different packs

 

[Lynx_Arc]

I once bought a bulk amount of L91s for 50 cents each and a few of them (2-3) were bad in that they were essentially dead. L91s measure about 1.8v with no load when full and about 1.6v or so when they are empty. Under a light load they can power things like an alkaleak can but increase it from light to normal and they cave in voltage to unusable.
Not knowing Zebra AA lights it may be possible the light is designed for alkaline (1.5v) and lithium ion usage (3.7v) and think that the higher voltage of the battery makes for it being sensed as an over discharged 14500 cell.

 

[idleprocess]

Not knowing Zebra AA lights it may be possible the light is designed for alkaline (1.5v) and lithium ion usage (3.7v) and think that the higher voltage of the battery makes for it being sensed as an over discharged 14500 cell.

Anyone remember the ill-fated Battery Station Lithium "1.5V" AAs? They'd measure close to to 2.0V no-load, which would freak out some dual-mode drivers.

 

[Lynx_Arc]

Anyone remember the ill-fated Battery Station Lithium "1.5V" AAs? They'd measure close to to 2.0V no-load, which would freak out some dual-mode drivers.

I know some Fenix lights don't like lithium primaries they won't operate low modes till the voltage drops under a certain level likely 1.6v under load. I did have a brush with some cheap batteries that came with a remote control that measured 1.6v when they were dead. I had never encountered such high voltage in dead batteries before lithium primaries came about so it took me a little sleuthing to figure out when batteries putting out 1.6v didn't work but those putting out 1.3v did.

 

[raggie33]

batts measure 1.8 v

 

[Lynx_Arc]

batts measure 1.8 v

Can you find one that measures 1.6v and try it?

 

[raggie33]

im pretty sure its brighter reason i noticed this weird thing is it was dimmer after puting in new cell

 

[Mr. LED]

Which Zebra?

 

[raggie33]

kind of bummer i stocked up on these l91 cells

 

[raggie33]

http://zebralight.com/SC5w-Mk-II-AA-Flashlight-Neutral-White_p_193.html

 

[Mr. LED]

Are all modes dimmer? Or only H1?

 

[Mr. LED]

The voltage range for the SC5w II is 2.0V, it should work fine. I'll test my AA Zebras tomorrow, but I have only SC53c, H53Fc and SC52w L2.

 

[raggie33]

Are all modes dimmer? Or only H1?

i only checked the higest.mode

 

[snakebite]

would be interesting to see if battery is sagging badly under load.
its just a simple boost.
it has no li-ion support.
higher input voltage would translate to less load on the battery.
so it may be a batch of bad or counterfeit batteries.
i edited this once i saw the specs.
i would still rig up and test these batts under load