Ooop. Lipo Charging Mistake.

deMARCOman · Apr 6, 2017

So as we know the factory H batteries are 5400mah / 4s

I mistakenly charged them at 4.0 amp / 4s

Did I just ruin them or shorten their life?

Rayray · Apr 6, 2017

Not at all, you're good.
4S refers to voltage (the number of cells). Charging at 4 to 6 amps is fine.

deMARCOman · Apr 6, 2017

Rayray said:
Not at all, you're good.
4S refers to voltage (the number of cells). Charging at 4 to 6 amps is fine.

TYTY

stress level reduced. I was just short of full panic when I saw the potential for $300. / 3 batteries --kapoof.

THoff · Apr 6, 2017

You shouldn't charge the battery at more than 1C (1x capacity), which would be 5.4A. So 4A is well below the safe charging rate.

Rayray · Apr 6, 2017

Hey, I know the feeling. My first TH, one of the first RealSense models sold, was only a week or so old in July when I stupidly let it run into a tree limb. That would not have done too much damage, but then it fell 10 feet onto a metal fence. Detached the cam and bent back both outer sides of the RS sensor panel.

With member help I repaired the gimbal myself, then called Yuneec. Told them straight out I crashed it. Sent it to Ontario and got it back 2 weeks later. Ticket said repaired RS Module, total cost out of pocket some 130 bucks. Repaired? Being skeptical I examined the RS Module. Brand new...

Steveo · Apr 6, 2017

Hi i charge my Hs standard batteries i all ways at 4.0 amp with my Quattro 4x6 charger , no problem

PatR · Apr 6, 2017

At 4 amps you are still "slow" charging them. 5.4A is 1C for the stock H battery. 1C essentially works out to a 1 hour charge rate. 4A would be perfect for a 4000ma, or 4 amp battery. 4A is less than 1C for a 5400ma, or 5.4 amp battery.

Andyzonk · Apr 7, 2017

I have been re-charging my Batteries at 7 Amps. I have 3x Batteries with over 100 Flights on each of them. No problems and the Batteries are still going strong. Just as a Test, using a LiPo safety bag, I once charged a battery at 15 Amps. Nearly 3C, took about 15 minutes to fully charge, the battery did not even get warm. I don't think charging at 15 Amps is a good Idea but it worked OK. The most important thing for battery care is keeping them at 'storage' voltage when they are not being used. I tend to charge the batteries right before I use them, the rest of the time they are kept at 'storage' voltage (15.3v).

mcbutler · Apr 7, 2017

Andyzonk said:
I have been re-charging my Batteries at 7 Amps. I have 3x Batteries with over 100 Flights on each of them. No problems and the Batteries are still going strong. Just as a Test, using a LiPo safety bag, I once charged a battery at 15 Amps. Nearly 3C, took about 15 minutes to fully charge, the battery did not even get warm. I don't think charging at 15 Amps is a good Idea but it worked OK. The most important thing for battery care is keeping them at 'storage' voltage when they are not being used. I tend to charge the batteries right before I use them, the rest of the time they are kept at 'storage' voltage (15.3v).

I like your style Andy, take no prisoners and charge them bad boys........

Dezzzy.D · Jul 25, 2017

anyway I can recover a couple stock batteries that only fully charge to 1345ma? I've dicharged, balanced and done it all with the HiTech charger but cant get them up. Are they pooched?

PatR · Jul 26, 2017

Happens sometimes as we age...

Try one for a flight where you hold a hover about 6' off the ground until it hits 14.8v. Land, let the battery cool, and recharge at 5.4A. See what happens. If it takes less than 2000mA, it's done.

I love reading the high charge rate posts from people. I really get a kick out people that will take that info to the bank and use the method themselves, putting their money at risk.