Battery help.

[maxa beam]

From what I've garnered, AW protected batteries are the best (In this case, rechargeable.). And I just bought a pocket light online which requires 123s. (Or, as it puts it, it accepts Li-ion 4.2 volts as well.), the Novatac 120P.
http://www.novatac.com/edc-p.html
So, I found these on Lighthound and I THINK they're right. Mind confirming this? I'm just terrible when it comes to electricity and such. Here's the link.


http://www.lighthound.com/index.asp?PageAction=VIEWPROD&ProdID=1155
I also need to know which charger to use, and I only have one requirement, and that is that it be a two-battery charger. Have one charged always, right?
I think this is right, but it says 3.6V and the batteries say they're 4.2V.
http://www.lighthound.com/inhttp://...D=2515dex.asp?PageAction=VIEWPROD&ProdID=2515

Sorry, not familiar with all this lithium stuff.
Any help appreciated.

Oh, one more thing. I hear battery station's pretty good, too, so I checked them out. Are these right? They're protected rechargables that say they're 3.6V and 900mA instead of 750 like the others. Isn't that the capacity? So, the Battery Station batteries would last longer?
http://www.lighthound.com/index.asp?PageAction=VIEWPROD&ProdID=2190

 

[KeyGrip]

That's the right cell. As for the 4.2v vs 3.7v, it's a matter of voltage when the cell is "fresh" (just charged). AW's 3.7v cells are all around 4.2v off the charger, but settle to around 3.7v during use. For chargers, the only one I've ever had to buy is the Pila IBC. With that, I can charge any protected 3.7v cell using the right combination of spacers.

 

[maxa beam]

What about the 900mA VS 750mA(MilliAmps?) thing? Is that capacity? or discharge rate or something?

Is that the right charger?

 

[Steve L]

The AW's from Lighthound are the right ones. The WF-138 will work fine, but only for RCR123's. It has a switch to let you charge 3.6v nominal(4.2v fully charged) or 3.0v rechargeables. You could also go with the WF-139, it will charge 18650s,17670s,14500, and RCR123s with the 15mm spacers also available at the Hound. Edit:The 4.2v doesn't settle down to 3.7v if it did your batteries would be toast. As you use up the battery energy the voltage drops, protected batteries shut down at ~ 2.75v loaded. The mah rating is capacity. Some manufacturers tend to inflate the numbers, and depending on the discharge rate you can get better numbers(a 1000 ma draw will give a lower capacity then a 20ma draw will). AW does not, I think 750mah(Milli Amp hours) is about the most capacity you will get out of a RCR123.

 

[KeyGrip]

mAh (milliamp-hours) is a measure of capacity. I don't have any experience with that charger. Come to think of it, this discussion is better held in the "Electronics/Batteries" section. Perhaps a kindly mod would move it?

 

[Gunner12]

Li-ion batteries are 4.2v fully charged and around 3.6v.

From this thread, it seems like the Batterystation ones are better then the AW ones under larger loads but they seem to have similar capacity at 0.5 amp draw. Keep in mind that the post is a bit old.

You can also order directly from AW.

You might want to move this thread to the Flashlight Electronics section.

 

[DM51]

Moving this to the Electronics & Batteries section.

 

[maxa beam]

Thank ya, DM51.

So, if mAH is capacity as I suspected, wouldn't Battery Station batteries last longer?

 

[mdocod]

from what I understand, Silverfox's chart for the AW cell is the previous generation cell, i believe the latest one is slightly better than those results. (I could be wrong)...