Ok i need some advice on Li-Po

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joejordaney

joejordaney

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Ok so i got myself a HPI Firestorm Flux with a brushless motor and i opted for the the big ass Li-po

I got a Trakpower Dark Series 40c 5000 li-po
on the back of the battery the charging settings are 2cell 7.4v amp.

i am pretty unsure about the charging and the discharging

can anyone help me with some simple questions?
 
lipos are pretty basic but I am a proponent of always using the balance method. if your charger doesn't have a balancer then get yourself something called a blinky. a balancer reads the voltage in all the cels and discharges the one that is higher. this keeps the packs in peak performance

when charging lipos it is always a safe number to go 1c... so for your 5000 mah lipo, it's safe to charge at 5 amps. I have been into lipos for a long time (I still remember $800 batteries for my e heli hehe, quick e10).

fire away. I smoke in my garage and my computer is out here. why I am always on the forum as I am an addict LOL
 
joejordaney said:
Ok so i got myself a HPI Firestorm Flux with a brushless motor and i opted for the the big ass Li-po

I got a Trakpower Dark Series 40c 5000 li-po
on the back of the battery the charging settings are 2cell 7.4v amp.

i am pretty unsure about the charging and the discharging

can anyone help me with some simple questions?
Click to expand...

Here's a great site for Lipo charging and explanations. Or ask Pipeous!

http://www.rchelicopterfun.com/rc-lipo-batteries.html

There's also a video on there of a lipo fire. Gives you an idea of what those things can do if something goes wrong.
 
+1 on what Pipeous said. As an extra precaution though i will set my amps little less. for instance instead of 5 amps for a 5000mah pack i will do 4.5 amps. it is just a habit i picked up a while back.


Chris
 
I charge my heli batts @ 0.9 amp on a standard Belt CP batt.But that is a standard charger for the batts. Its not messed anything up.
J.
 
Lipo fires are a cause of using the wrong charger (charging on say nmh setting) or using an unregulated power supply. Automotive battery chargers are bad for power supplies. Don't over discharge, that causes the cels to puff. 3v per cel so use a lipo cutoff.

I have had one lipo puff and that was in a radio. it got turned on while travelling back from a race up north, and one that I left the esc plugged in. esc's still draw power even if the switch is turned off. the switch just turns the chip on and off... lesson learned at a cost of $70
 
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