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HelicopterMain Discussion › Some charging question with Triton (I’m just learning about batteries and chargers)
12-18-2003 04:41 PM  13 years agoPost 1
rccopter

rrApprentice

Perth Australia

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Never had the need to know this before as I’ve always had a JR wall charger and simply recharged my Tx and Rx before each flight. But now I bought a triton….
After reading my triton manual a few times I have a few questions about charging and discharging…. some of these questions may sound stupid but It’s all new to me at the moment so I have to ask

Info about my batteries
My Rx battery pack is rated at 1700mAh and states 4.8V, It looks to be AA size batteries.

My Tx (JR3810 with standard battery) is rated at 600mAh and is 9.6V noty sure what batteries are in there I guess there AA (9.6/8=1.2)

About Discharging
The triton manual says to set the discharge voltage for Rx packs at 1.1volts * the number of cells so that would be 4*1.1=4.4v. It also states the average use placed on these batteries in operation is about 0.2-0.3A, so to do a slow discharge or to test the batteries capacity I guess you would set the discharge rate at about 0.2-0.3A.

For quick discharge it states to do it at 2C (2 times the rated capacity) so for my Rx pack I thought that would be about 3.4A (1700*2=3400mAh), however the Triton only goes to 3A so I figure I’ve misunderstood this.

About charging
Any suggestions for charging rates?? I assume it would somewhere between 1 and 2a again I’m not sure.

My Question
Any info or suggestion for charge and discharge rates for the two batteries listed above would be great, if possible in terms of fast and slow charge setting for both packs and fast and slow discharge setting for both packs.

www.perthrcheliclub.org.au

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12-18-2003 05:15 PM  13 years agoPost 2
rob_jones

rrKey Veteran

Perry, GA

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I usually don't discharge at more than 1C. But it sounds like you have a pretty good understanding of how to use the charger.

The batteries will have a longer service life if they are charged and discharged more slowly. I would "quick charge" them at 1C and "slow charge" at around 1/2 C.

And unless JR changed something, you can't discharge the transmitter batteries through the charge plug on the transmitter. You have to take them out and plug directly into the pack.

Blade 550X, T-Rex 450 Pro FBL

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12-18-2003 05:48 PM  13 years agoPost 3
Rotory Wings

rrNovice

Poughkeepsie, NY USA

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Bimmer, just got a Triton and wanted to cycle my packs but I heard of the diode in the JR transmitter (8103); decided to just try it anyway. It cycled fine; discharged and then charged (by the way, much better charge than the JR wall charger)

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12-18-2003 05:55 PM  13 years agoPost 4
rob_jones

rrKey Veteran

Perry, GA

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decided to just try it anyway. It cycled fine; discharged and then charged
I've heard conflicting reports about that diode. I just play it safe and remove the battery. It's a good idea to do that anyway; if a problem develops and the pack catches fire (it can happen), your transmitter gets fried.

Blade 550X, T-Rex 450 Pro FBL

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12-19-2003 04:53 PM  13 years agoPost 5
nivlek

rrProfessor

Norfolk England

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For slow charging use the 1\10C for 14Hrs rule.For example a flat 1700mAh battery should be charged at 170mA for 14 hours.When
fast charging the charge rate depends on the type of cell.Some cells,
such as those used in electric flight , can be safely charged at 3C.
It sounds like your reciever pack, being a 1700mAh in "AA" cells,
is a NiMH pack rather than a Nicad pack.NiMH packs should not be
charged at anything greater than 1C.If I were you I would charge it at
1 amp and keep a check on the temperature while charging ,it will
begin to get warm at the end of the charge, but if it gets hot stop charging immediately.As for the TX pack this is probably a Nicad pack,
but again I would not go above 1C (600mAh) on these cells, and would
advice that you remove the pack from your TX to fast charge,and again
keep a check on the battery temperature.
PS, I don't think that you have misunderstood the discharge rate, it
is more likely that the 3 amp limit prevents too much heat build up
because of the amount of power the discharger has to dissipate.
Hope this helps.

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HelicopterMain Discussion › Some charging question with Triton (I’m just learning about batteries and chargers)
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