Subject:
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Re: Solar Ni-Cad Charging
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 17 Apr 1996 14:57:54 GMT
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Original-From:
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Larry Randall <lrand@cts./SayNoToSpam/com>
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Viewed:
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2116 times
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Attach leads to same place the charger goes. + to +, - to -. Don't
forget the diode. To be safe, monitor the current when the batteries are
fully charged. Should not be more than 50ma. It is a good idea to cycle
the nicad's about once a month. That is to allow them to become fully
discharged, then fully charge them.
Larry
On Tue, 16 Apr 1996, Sean Cunningham wrote:
> I would like my robot to carry a solar cell for battery recharging. I have
> not been able to locate a reference for any gotcha's with this plan, so here
> goes:
>
> I quote from the assembly manual:
> [start quote]
> The power supply provides between 12 and 15 volts to the charge circuit of
> R11 and the Handy Board's 9.6 volt battery. There will then be a voltage
> drop of about 2 to 5 volts across R11, yielding a charge current between 40
> and 100 mA (milliamps).
> [...] the standard charge rate of the battery pack is 50 mA.
> [end quote]
>
> So, my solar cell would need to be able to provide between 12 and 15 volts
> at between 40 and 100ma. I have been able to locate a solar cell that
> produces (in full light)
>
> Volts: 15 to 17.5V
> Current 80ma to 100ma
>
> Would this be suitable? I realize I would need some kind of diode in series
> to prevent battery discharging in darkness, but what else would I need to
> do? Where would I attach the leads from the solar cell?
>
> Sean R. Cunningham
> MSI Consulting Group
> http://www.msiconsulting.com/
>
>
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Message is in Reply To:
 | | Solar Ni-Cad Charging
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| I would like my robot to carry a solar cell for battery recharging. I have not been able to locate a reference for any gotcha's with this plan, so here goes: I quote from the assembly manual: [start quote] The power supply provides between 12 and 15 (...) (29 years ago, 17-Apr-96, to lugnet.robotics.handyboard)
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