Question using nimh vs Alkaline for 'superbulb'

[AuroraLite]

Question using nimh vs Alkaline for \'superbulb\'

Hi, all. A total newbie in this department, and after reading up at this forum and various online materials...I am still not too certain about the batteries choices for superbulb /ubbthreads/images/graemlins/confused.gif :


Recently, the MagXXbp which allow any normal Mag to use unpotted 'superbulb' had got me all excited /ubbthreads/images/graemlins/blush.gif--but at the same time, in many superbulb related threads(for ex, Super Bulb usage update request), I have noticed that hardly any mentioning of Alkaline batteries used for the Superbulbs.


1) Besides guilt-free-lumens and environmental reason, are there any reasons why non-rechargable alkaline are mostly ignored?

2) Because of high internal resistance for Alkaline or inability to handle high current demand from bulb?

3) What will be the 'effect' if Alkaline is used in place of Nimh? Shorten battery life? Heating issue?


Also, if we look at the table from WA GB/Ginseng below:

WA01111: 6V spec (464.95 lumens), 7.2V push (880 lumens)
WA01160: 5V spec (326.72 lumens), 6V push (618 lumens)
WA01183: 4.7V spec (410.92 lumens), 4.8V push (442 lumens)
WA01185: 9.6V spec (816.81 lumens), 10.8V push (1234 lumens)
WA01274: 7.2V spec (552.92 lumens), 8.4V push (946 lumens)
WA01318: 9.6V spec (534.07 lumens), 10.8V push (807 lumens)


Say WA1185 will probably run on spec by 8 1.2v 2100mAh batteries(9.6v), and 'push' if using 9(10.8v).

4) What happened if I use 7 1.5v Alkaline and a dummy(10.5v)--could I expect similar battery life/result to 9 rechargebles(with a FM 8AA to D adapter)?


Thank you in advance, any input will be greatly appreciated! /ubbthreads/images/graemlins/grin.gif

 

[Phaserburn]

Re: Question using nimh vs Alkaline for \'superbulb\'

You won't be able to use alks for anytime worth mentioning. Your #2 premise is correct. Because of high internal resistance, alks voltage will sag under the high load and current will be too low. The result is a far dimmer, yellower output which will go from dim to worse very very quickly.