Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers



Laser Pointer Store

123 batteries "Do not use in flashlights"?

Joined
Aug 10, 2010
Messages
42
Likes
2
Points
0
I bought a pair of rechargeable 123 3v batteries for my Spartan, but I just noticed that it says "Not for use in flashlights" on the package. Why is this? Can I really not use them?
 

AJ_Dual

New member
Joined
Aug 10, 2007
Messages
528
Likes
27
Points
0
If they're non protected, it's possible that the nature of flashlight use (forgotten and just left on somewhere) could drain them beyond their lower voltage limit, and after that they tend to get explodey when you try to recharge them in a dumb charger.

Also, LiOn RCR123's charge up to 4.6V peak, which in a two cell flashlight is 9.2V, when it may have only been expecting 6V from 123a lithium primaries. Some incandescent bulbs can't handle it, or in the case of LED's the driver/regulator can't.

It's just a CYA thing on their part. It's up to you to read/get the exact specifications of whatever it is you intend to use them in.
 

qumefox

New member
Joined
Mar 26, 2010
Messages
3,234
Likes
117
Points
0
RCR123a's are 4.2v max. Not 4.6v. All Li-Ion technology batteries are natively 4.2v max with 3.6v nominal. Some just have protection circuits that drop it down to 3.4v max I think and 3v nominal, so they can be used in devices that 4.2v (or 8.4v when using two) would kill.
 




Top