1211Re: [AT_Sprint] Re: 11.7 Volts from Lithium Ion Cells?
- Jun 2, 2007Hi Gang, I use LiPos in my Yaesu VX2R HT and my laptop and my cell
phone. What do these devices have in common? They have a chip inside
them that charges the LiPos battery. You put in 5 Volts DC about and the
chip sets the charge rates.
For my radios I use NiMH AA cells. I run 12 volts to my ATS-3 from
10 of the AA cells in a nice Mouser battery case. These 2200 mAH cells
will run a ATS-3 all day in a contest.
I recommend the NiNH AA cells because Wal Mart sells a charger that
works in your car or home, charges 4 at once and costs $18.00. They are
Grey in color and do fast charge with real success.
Have Fun, 73 Karl K5DI
John Harper wrote:
> Hi Steve,
> I use LiPos exclusively in my QRP rigs when operating portable. If you
> decide to use NiMH AA's instead, keep in mind that you will need more
> cells to provide a given voltage than with any other AA-from factor
> chemistry. I've compared a few battery types here:
> Regarding the potential for overheating/burning in LiPo cells, most of
> the cases where this has occurred have been in R/C applications where
> the battery is supplying current at or near its peak rated output. I
> have a motor (http://www.hobby-lobby.com/brushless-uberall.htm) that
> pulls 18 amps from my the same make and model LiPo battery (2100 mAH)
> that I often use with my KX1. Its max discharge rate is 31A (50A
> intermittent) and does get warm in R/C use but when powering the KX1,
> I doubt the battery even knows it's being used.
> John Harper AE5X
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