Motorola Bag Phone Batteries

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teamdebus@webtv.net - 11 Jul 2005 20:38 GMT

Howdy:

I have some Motorola bag phone batteries, that I would like to recharge
thru my vehicle's cigar lighter, while on the road. The batteries I have
are SNN 4298 A -1 (sealed lead acid).

Making an adapter with a voltmeter (and ohmmeter if necessary) and
enclosing same in a covered battery box, is no problem.

What I need to know, is the charging times for the batteries, when
they're at various states-of-charge (or discharge, if you will).

IOW: X-number of hours for a battery discharged down to 11V; X-number of
hours for a battery discharged to 11.5 V, etc, when hooked up to the
vehicle's 12V 60A alternator.

I would really appreciate any comments and advice from readers who have
charged the same, or similar batteries, in this manner.

Thanks,
TD

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prc2u - 12 Jul 2005 17:29 GMT

If you use a true Motorola charger a light will indicate when it is
fully charged. Design your system so you can use a car charger from
the vehicle lighter.

>Howdy:
>
[quoted text clipped - 17 lines]
>Thanks,
>TD

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teamdebus@webtv.net - 14 Jul 2005 19:54 GMT

>If you use a true Motorola charger a light
>will indicate when it is fully charged.
>Design your system so you can use a car
>charger from the vehicle lighter.

Unfortunately, the "true Motorola charger" we bought, didn't come with a
light. Could be, that feature wasn't available in the old Bag Phone
days?

But, idiot lights are the only way to go, when it comes to charging Bag
Phone batteries, while on the road. Got a circuit diagram, handy?
Thanks!

TD

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