Batboard

Is it possible for my HT1250 to discharge batteries while it is switched off? I've tried a few batteries with different capacities and date codes and they all seem to discharge while the radio is off. I put a fresh one on the radio in the morning and went out on a SAR mission some five hours later. When I arrived and tried to turn on the radio, it was dead. I swapped out batteries from my back pack and finished the mission. At the end of the mission there were 2 bars left on the radio display. Switched off the radio and headed home. About 2 hours later I took the first battery out and recharged it. I switched on the radio and it was now down to one bar on the display. The first battery was less than 4 months old and the others a little over a year old. Any suggestions?

Thanks,
Mike

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RadioMan1101 wrote: Any suggestions?

Thanks,
Mike

Just a guess based on what you've said above. It doesn't sound like it's your batteries. From here, I'd say your charger isn't finishing the charge cycle.

Not sure it is a charger problem because I have used two different chargers. I removed from service 2 batteries that would get hot when charging, old date codes. I just ordered a few new batteris today and will see if that changes. The others were analyzed and checked out to be good. It could just be that dark cloud hovering over my head!

Thanks for responding.

OEM batteries or knock-off....? What was the duty cycle (i.e. how often were you transmitting?)

OEM only, no Chinese knock offs! Duty cycle, 80% receive.

At this point I would suggest putting the radio on a battery eliminator (built one should be just fine) and check the current draw while the radio is off. It's possible that there is a short in the PA circuit causing the battery to discharge even though the unit is off.

my money says bad PA if batteries/chargers are eliminated. Had a few Jedi's that would exhibit this behavior, and a couple of analog Sabers that did it. The Sabers would actually get warm on the side of the radio where the PA was, even when off. They would drain a freshly charged 4595 in about 6 hours of just sitting.

That was my thought. I've actually had Jedi's be fine for a while and suddenly start pulling tons of current and getting really hot even with the radio off. That was my basis for what I told him as the B+ line to the PA circuit does not go through the fuse for nearly obvious reasons.