Yep, higher internal resistance is a disadvantage over NiCd. Makes
Li-ion not as useful for power tools and such. Wonder what it'd take to
do timestamped data logging output from my HP 8920A - I'll bet it
wouldn't be that hard to set it up to spit the RF power level out over
the serial port, and then have the weather station key it up every x
seconds and send y seconds of human voice.
Scott
Dan Zubey wrote:
>
>
> You guys are aware that a given battery will show different capacities
> based on the load placed on them, right?
>
> A 1 ah battery might last 10 hours at 125ma but then only last 5
> minutes with a 1 amp load.
>
> Usually the battery manufacturers rate them at a certain current rate,
> and outside that range YMMV. You have to measure capacity at the same
> current level to make comparisons.
>
> We've had trouble here in events with hams showing up with radios that
> preformed well for 10 hours scanning at home, but once they show up to
> an event and have the radio recieving for a couple hours plus the
> occational key up, the batteries die quick. Not only is the current
> higher, but the battery performs differently with the higher load. Its
> predictable...about an hour into an event some new hams disappear off
> the net.
>
> -Dan n7nmd
>
>
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