rechargeable battaries

matt0

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Feb 22, 2008
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Ft. Worth, TX
im kind of new to the high performance flashlight world and i have a couple questions about batteries.

I have an Energizer rechargeable battery tray that can charge AA, AAA, C, D, and 9volt batteries. the post that touches the negative contact is spring loaded to fit the various battery lengths. would a charger like this be suitable for recharging 10440's or 18650's? i only use some cheap radioshack and some energizer rechargeable batteries in various electronics throughout my house.

looks like this
Universal.jpg


i ordered a Fenix L0D cree q4 and was thinking of using a 10440 battery but didnt want to spend money on a seperate charger.

i have searched some and read a few threads talking about the dangers of a 10440 in the L0D..

thanks for any help!

Matt
 
Last edited:
The charger you show is for nickel metal hydride (NiMH) batteries. The 10440 and 18650 batteries are of a different kind (lithium ion or Li-ion) and need a different kind of charger. It is quite impossible to charge 10440 or 18650 cells in a charger intended for NiMH cells like the one you have.

If you buy lithium ion cells you need to carefully match the charger with the cell, since not all lithium ion chargers are compatible with every kind of cell, and you will need to read up on this before you make a purchase.
 
Here's a good multi-purpose lithium-ion charger for 14500 / 17500 / 17670 / 18500 / 18650 / RCR123 3.7 volt rechargeable batteries. Ultrafire Rapid Charger

If you plan on using it for the short RCR123, you'll need to get the aluminum spacers. I would recommend you use Protected lithium ions. They're usually only a couple dollars more than unprotected ones, but you know the old saying...better safe than sorry. :)
 
For 10440 cells, you'd want this charger. I don't believe the WF-139 accomodates 10440 cells.
 
alright next question, are there any 10440 cells that are 3V? i have seen some 3V and 3.7V RCR123's but not in the other sizes (17500, 18650...)

thanks for the help so far, i always try and go through and search before creating a new thread but some times its just so much eaiser to ask anyway.
 
in all honesty, you will be best served just running it on a good NIMH cell like a Sanyo eneloop, if you really want something brighter, just move up to bigger flashlight.
 
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