Lipo Question

QuadKid

QuadKid

Noth'in Like a Flat Top
Hey All, a question about Lipo's.
I went ahead and bought 4S / 14.8V / 1800 mah/ 65C batteries from China thinking it was a pretty good deal from Banggood. Well they finally came, gave them the first charge (balanced at 1.8Amp rate, noticed that they only accepted around 650mah before fully charged. Using The Gemini 2100 dual port charger 80W p/port. Flew them for the first time on the Walkera F210 and only got maybe 2 minutes of flight time. Recharged, same procedure, same result.
Question is why they are not accepting the proper mah to full charge. I have 12 other batteries (Tattu)
and when discharged they charge to the proper mah (1750-1810) have no problem with them.

I'm kinda thinking you get what you pay for, (they were cheaper then the Tat's).
Would discharging them to storage levels correct the problem or is it un-correctable, just cheap aftermarket batteries.

If anyone has experienced this and found a way to correct it any advice is appreciated.
 
... Probably a combination of both of your assumptions ... lol ... they WILL hold more charge after being "broken in",
AND you get what you pay for. ;)
 
Thanks Guy's
They are only on their 3rd cycle, I will continue to fly them just to see if they improve over time, if not I will post the make & model just for future potential buyers knowledge. China has a one way door and it ain't facing east !!
 
Some bad Lipo batteries' capacity rate are not true, usually those bad Lipos' capacity are lower than the capacity rate. There is a Lipo battery capacity test about Rage RC, Gens Ace, Venom, Traxxas and Glacier these five brand Lipos, and the result is measured capacity are larger than their rated capacity. And your Tattu lipo batteries and Gens Ace lipos are produced by the same company, so they are normal. Maybe there are some other reasons or maybe these Lipos are too bad.
 
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