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-   -   Discharging Li-Polys (https://www.rcuniverse.com/forum/e-flight-power-sources-126/3031837-discharging-li-polys.html)

Ryan Nau 06-01-2005 09:06 AM

Discharging Li-Polys
 
I have a Trition charger but never discharged the few Li-Poly packs I have. They are all 3 cell packs. How do you go about doing this with this charger. They are 3c 1320 and 860s. Another thing is, my battery packs never charger to capacity anymore. They usually go to about 500-600mah and thats it?? Anything wrong here?
Ryan

Matt Kirsch 06-01-2005 08:31 PM

RE: Discharging Li-Polys
 
Not being terribly familiar with the Triton, I can only say, follow the instructions. You probably need to use one of the memory slots to program in the cell count (voltage), capacity, and discharge rate.

There are several reasons why your packs aren't taking as much charge as you think they should. First and most common is, you aren't discharging the packs as much as you think you are. Second is that you're pounding on the packs too hard when you fly, and they're damaged. Do they come out of the plane uncomfortably hot? Third most common is that the cells in the pack are out of balance, that is, they have different voltages. The only remedy there is to charge each cell separately with a pair of alligator clips (remember to set the charger for a 3.7V, or ONE, cell).

LiPolys charge to a fixed voltage, not a "peak" like NiCds, so the charger only puts in enough juice to get the battery up to where it's holding 4.2 Volts per cell on its own.

GeraldRosebery 06-09-2005 12:17 PM

RE: Discharging Li-Polys
 
I don't know why you want to do it, but it's very simple. Set the battery type to Li Ion by repeatedly pushing the "pack type" button (the small right hand one). Then turn the dial until Dschrg Li Ion shows at the top of the display and the two numbers for current and ending voltage are shown below. To change these numbers push the dial until the current number flashes. Turn the dial left or right to change it. Push the dial again until the right number for ending voltage flashes and change it the same way by turning the dial. Push the dial again to stop the flashing. Connect the pack and pushing and hold down the dial until the display says --checking the pack-- and leave it until it beeps at you signaling that it is finished. Read the numbers you want for ending voltage and Mah taken out of the pack.


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