Subject:
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Re: Rechargeable Batteries
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Fri, 3 Aug 2001 18:05:00 GMT
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Viewed:
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1287 times
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In lugnet.robotics.rcx, Frank Caggiano writes:
> Hello,
>
> I'm at the point now where I need to get rechargeable batteries for the
> RCX. The alkaline's are just now making it anymore.
>
> Are Nicads OK or should I go the extra step and get nickel metal
> hydrides (Ni-MH)? How are radio shack's batteries and chargers?
>
> thanks, regards
Frank, I would *not* use Nicads or NiMH rechargeables. Their full-charge
voltage is about 1.25V while alkaline batteries are about 1.55. I have
Ray-O-Vac Rechargeable Alkaline batteries. They last several hours of
operating time between charges, which for me is a few weeks (adequate
performance). I have two sets of six and a charger, an investment of about
CAN$60.
Nicads are good and NiMH batteries are better for duty cycles of a heavy
current draw now and then with idle periods between, such as in digital
cameras. In those cases, rechargeable alkalines are no good; the voltage
drop is too high. But for LEGO applications the duty cycle more or less
matches what the batteries can provide.
I hope this helps,
Jerry
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Message has 1 Reply:
Message is in Reply To:
 | | Rechargeable Batteries
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| Hello, I'm at the point now where I need to get rechargeable batteries for the RCX. The alkaline's are just now making it anymore. Are Nicads OK or should I go the extra step and get nickel metal hydrides (Ni-MH)? How are radio shack's batteries and (...) (23 years ago, 3-Aug-01, to lugnet.robotics.rcx)
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