Hey gang a QUESTION please about charging rates for this battery....
Got many of em, and love em, but I THOUGHT:
Max charge rate is 1c or 5.0 amp charge rate
Has anyone charged these at HIGHER than 1c (5.0 amp rate)?
I am now am charging these at 5.0 amps and takes about 30 mins, wanting to charge higher if it safe?
HK says they are rated for 5c? doesn't that equal 25 amps!!!
ie: could I charge these at 10 amp rate? (safely I mean)
Are you sure HK...charge rating of 5c written in specs is CORRECT?
As i have written, i have many of them and they are great, but you have to know a few things:
1.) do not discharge them on more than 20C
2.) do not discharge more than 4000mAh
3.) do not charge them on more than 1c (i`m charging them on 3A)
The packs are not the best, but when you do everything i have said/written you will be very happy with it for long time!
Hope that helps!
there probably talking about trickle charging which is not good for the battery at all. the slower the charge the longer it will last and the better it will preform. i say 3 amps is a good amp to charge it at
Hy tomino, i have tested discharge and charge some packs like they are rated, but they blowed on. And when this is happening anything is wrong with the battery.
A few tests later i have found the best rating for them.
Thomas, why do limit maximum discharge at 4Ah? Does it no long provide power at your maximum usage of 20c? At the end of full discharge, assuming use used your maximum of 4Ah capacity, do you see wide separation in each cell voltage, and if so, what was the max differential voltage between largest and weakest cell voltage? Have you ever tried to measure the impedance of each cell? I'm just coding software algorithm for gas gauge using impedance tracking method, and battery of this price level is my primary interest. I'd appreciate your response.
Hy heyya, the differential of cell voltage on maximum discharge is ok. Never measured the impedance but if you take out more than 4000mAh the voltage drops down rapidly and the pack is blowing on, so it is a sign for me that the impedance goes up and we all know that is not the best for our packs *-) If you want to take out more than that (4500mAh or more) you will not be happy with this one!
Just recieve one.
All cells ballanced on my iCharger 106 with:
I plug it to my HB Ve8, do some runs, everything is fine!
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best bang for the buck, can't wait for more to come in stock. 12 gauge wires 150mm long with 4mm dual bullet plugs. 5c charge rating with silicone 26 gauge balance plug.
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I have received 2 packs today. Voltages are fine - 3.86V and both packs balanced.
One pack has a poor glue job on plastic casing which opened really easy so I got to see whats inside. Cells look fine so I gues it is really just a bad glue job. I will close it with my own glue and use it that way. I hope that will be no trouble. If you think I am in danger please reply to this review! Oh, yes - ordered 2 more packs.
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Dieser Hard Case Akku eignet sich natuerlich auch fuer Flugmodelle. Gute Spannungslage mit 4,20 Volt je Zelle, liefert mir 70A ohne sonderlich warm zu werden, ein wirklich empfehlenswertes Teil, ich werde mir einen zweiten Akku als Ersatz zulegen.