Alkaline bateries vs Mi-Mh

spanish

Newly Enlightened
Joined
Jan 22, 2007
Messages
20
Location
Spain
I have some spot lights (luxeon 5w 3 x AAA, Minimaglite TLE-5 2AA and a 3D cell scanner (like Maglite) and alwais use Mi-Mh cells.

How big is the diference (intensity and time to use) with the two types pf batteries?
 

Oddjob

Flashlight Enthusiast
Joined
Mar 24, 2006
Messages
2,175
Location
London, Ontario, Canada
I think NiMh will give you flatter regulation and an increase in runtime due to there being less internal resistance. With alkalines, some enegy is lost due to its internal resistance in high drain applications. You would probably not notice the difference in brightness due to the NiMh being 1.2 volts as oposed to alkaline's 1.5 Volts. NiMh are also cheaper to use in the long run and better for the environment. I have only minimal knowledge in this area so any other CPF'er out there with more knowledge and experience please chime in and correct me if I am mistaken.
 

Bullzeyebill

Flashaholic
Joined
Feb 21, 2003
Messages
12,164
Location
CA
I have been using alkaline's in my VIP, and Arc LS, both current regulated. One of my VIP's is set for three levels of light, 50mA's to led, 330 or so mA's, and 660, or so mA's to led. Runtime at the lowest power requirement, 50mA's to led is excellent, and also very good at 330mA's, though not spectacular, and is much better at that current using nimh's.

My Arc LS is set up for 250mA's to led, and runs 3 hours in full regulation with alkalines, and an hour longer using one CR123. NiMh's would improve runtime.

High drain applications do much better using nimh's when the light is regulated. Direct drive applications, or direct drive with a resister lights fare better, intensity, wise using alkaline's.

Bill
 
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