Many do the same with their Transmitters. Post mortum reveals a flight pack with no capacity left in it. THey throw a quick charge on it for a few minutes check the voltage again nd now it reads 5.1 so they fire up take off f y for 5 minutes and lose contriol. Someone at the R/C Field notices ther servos are slowing so they check and find the receiver pack at say 4.4-4.5 volts using a loaded volts meter. This voltage / capacity ration as an indicator will vary with battery types and the health of the batteries. A batteries voltage will rise quickly but it takes a long time for the capacity to be replaced. If I stop the charge and let it set for a day or so it will drop to around 12.7 which some consider an approximate 70% state of charge.Īdded: I should have mentioned that what you saw with the green LED is sometimes refered to a hot charge. My home charging station / Ham Radio power supply a 88 Ah AGM deep cycle is maintained at 13.8 volts (float charge). Most cars charge / maintain the battery to 14.4-14.6 while the motor is running. Like LiPolys everyone uses different numbers. I feel I'm just not getting it to full capacity.Īctually 15 volts is a full charge on a Pb 6cell 12V. I'm tempted now to just charge the Coleman jumpstarter until I get 13.8V out of it, since that's the nominal voltage off of a lead acid car battery. Once it fell below 10.5, I got the error from the Quattro charger. The little test LEDs lit up to green, indicating a full charge, but the next day, only yellow is lit (indicating a half charge).Īfter charging my 3S 11.1v 2100mAh lipo pack using a Pro-Peak Quattro lipo charger, my 2nd charge came up with a low source voltage error (15V - but I know it's the less than 10.5 since I monitored it with my multimeter).during the first 5 minutes, the voltage was fine (the charger uses a low amperage charge while it figures out how many cells you have, etc.), but then amps go up, and I was getting a voltage dropoff on the Coleman. I charged up the jumpstart battery according to directions. The wall wart says 12V (but is actually 16V), and says 500mA output. If only the red is lit, then charge 24-36 hours. If the green (full) LED is lit, then charge for 2 hours. The instructions say that if the yellow LED is lit, then charge for 3-5 hours. I followed the manual, using the LED indicator.I think I'm just not getting the capacity on the battery. My question here is on charging the thing. Something I could use to charge at home, plus take to the field. I decided to hopefully kill 2 birds with a Coleman 12V 10Ah jumpstarter battery.
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