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Old Jul 22, 2016, 06:02 PM
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How charging upto 4.20 volt per cell? Help Please. !!

Guys,
How can I charge my lipo and Lion cell upto 4.20 V?
All the chargers I have are charging a single cell upto 4.17 V only.
I need more juice for my applications. I am ok with the safety.

I use these 2 chargers.

https://www.xtardirect.com/products/...iant=529941637

https://www.google.ca/search?hl=en&s...L-8cohm6CpM%3A
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Old Jul 22, 2016, 09:18 PM
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Hardly enough to make a difference. Maybe a few seconds run time.

Gord.
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Old Jul 22, 2016, 10:57 PM
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Roger on that. That few hundreds of a volt is meaningless as most packs when charged to 4.2V drop to that level after being removed from the charger.

That amount of energy is not going to give you "more juice for my applications".
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Old Jul 24, 2016, 02:01 PM
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Roger on that. That few hundreds of a volt is meaningless as most packs when charged to 4.2V drop to that level after being removed from the charger.

That amount of energy is not going to give you "more juice for my applications".
Cell phone's battery charges upto 4.20 even more I see. I mean like 4.23 or a little more . How that happens?
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Old Jul 24, 2016, 02:08 PM
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Magic!
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Old Jul 24, 2016, 04:09 PM
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Magic indeed. My guess it's a small change in battery chemistry.

I know, use that cell phone charger that goes up to 4.23V......but then you'd need the lipo cells used with that charger. Never a simple solution.

The part being ignored is how little energy is gained by going up a few hundreds of a volt. It's much safer to discharge 0.05V more than normal to get additional flight time. No matter how you charge your packs, you are not going to get more zio, a very little more flying time but no performance gains to speak of. But it will decrease cycle life.
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Old Jul 24, 2016, 05:48 PM
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The cell voltage coming out of my charger is usually at 4.17 volts, which is fine with me. The Echo 6-10 chargers that I use, enable you to go into the programming and fine tune the full voltage output to 4.2 if I wish. I'm happy where it is.
Another point. I don't normally balance charge unless the cells get too for out of wack, then I balance. I still plug the balance in so the charger can keep track of the individual cells. If one cell goes over the 4.2 by a couple of tenths, it will start bleeping and give a warning on the screen.
Had this happen where, without the balance plug plugged in, a poor cell will not come up equal to the rest, and the cell that is already at 4.2 will start climbing , trying to get the pack up to 8.4, if a two cell pack, and will catch fire from over voltage.
Found that out the hard way.

Gord.
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Old Jul 24, 2016, 05:51 PM
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How accurate is that voltmeter the charger uses? If you have another voltmeter, check what it reads versus what your charger reads.
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Old Jul 24, 2016, 06:15 PM
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Done that with a VOM, but it's a good point.

Gord.
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Old Jul 24, 2016, 08:38 PM
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My charger is set to end at 4.15v so your batteries are charged more than mine
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Old Jul 24, 2016, 09:18 PM
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Originally Posted by flypaper 2 View Post
The cell voltage coming out of my charger is usually at 4.17 volts, which is fine with me. The Echo 6-10 chargers that I use, enable you to go into the programming and fine tune the full voltage output to 4.2 if I wish. I'm happy where it is.


Gord.
I like that your charger can charge upto 4.20 volt per cell. That's how li-on/Li-po is advertised to be fully charged. Doesn't matter life cycle man ...technology changes too fast to think abt a silly battery life cycle. All I care abt more juice.

U can program your charge ending voltage upto how much?
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Old Jul 24, 2016, 09:46 PM
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don't really know. Never went any further than that. and wasn't concerned with anything higher than that. I don't know why you'd want anything higher than that. When I get a minute I'll check it out.

Gord.
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Old Jul 24, 2016, 10:47 PM
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don't really know. Never went any further than that. and wasn't concerned with anything higher than that. I don't know why you'd want anything higher than that. When I get a minute I'll check it out.

Gord.
No, I wnt just upto 4.200 volt only;not more than that for sure.
Does your charger do so? Give me the link of that pls. Buddy, we r from same province by the way.
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Old Yesterday, 05:39 AM
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http://www.hobbyking.com/hobbyking/s...er_w_acc_.html
These are the ones I use. I see they are out of stock right now. It's sort of a generic charger. The Accucell 6-10 is pretty much the same charger and will do the same thing.
I've used these for many yrs with no problems.
The pair of them are going steady at the field run off a generator with a 110 volt power supply.
Where do you live?? Any where close and you should come to our funflies.

Gord.
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Old Yesterday, 05:53 AM
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The reaktor 250&300 and any icharger will let you set your charge termination voltage all the way up to 4.3v per cell.
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