December 29, 2007 7:56 AM
GWJax said: frenchie said:
hello i've got a new RD,and this one works properly! it was a problem with IR. the quality of chinese product is not on the top. My son is happy is the only thing important for me today. Don't hesitate to bring back the defectives products! if someone can tell me if RD can works with battery NI-MH,it can help me. thanks a lot and sorry for my poor english. bye Philippe
It should work but not or long the NI-MH only holds 1.2v and an standard battery holds 1.5V so if you have 4 batterys in NI-MH the voltage would be 4.6V verses 6V the more batterys you need the less power you will have from the NI-MH so keep that in mind and do the math. Hope this helps! GWJax
I was concerned about the NiMH's 1.2 voltage too but it turns out that the 1.5v of alakaline batteries isn't that great an advantage :
From the site below
http://www.greenbatteries.com/nibafa.html#substitue
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Can NiMH batteries be substituted for alkaline batteries even though they are only 1.2 volts?
Yes, for most high drain electronic applications NiMH batteries are ideal substitutes and you needn't worry about the apparent voltage differences. Even though alkaline batteries are rated at a nominal 1.5 volts, they only deliver 1.5 volts when they are fully charged. As they begin to discharge the voltage of alkaline batteries continuously drops. In fact, over the course of their discharge, alkaline batteries actually average about 1.2 volts. That's very close to the 1.2 volts of a NiMH battery. The main difference is that an alkaline battery starts at 1.5 volts and gradually drops to less than 1.0 volts. NiMH batteries stay at about 1.2 volts for most of their discharge cycle.
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For the large Wowwee bots, it looks like NiMH is the better bet. Alkaline battery performance tends to degrade after a while, my Boa could no longer lift his head when these were a day or two away from empty.
With NiMH the voltage seems pretty constant.