I had a few Gaoneng 350 mAh 80/160

Less than 2 weeks and play it with iFlighr Cinebee 75mm

The battery is very hot after each flight
And now some battery losing the power one night after charged



Is it a bad battery.?

I Had one Fullsend 3S HV that come with the cinebee.. Also experienced same problem
- battery get very hot after flight
- now it drained to fast

In the beginning eaxh battery can last 2,5 mins
Now longest is 1,5 mins.. And some is no power unused overnight

Please help

Not keeping a charge and draining too quickly are signs that a lipo is bad. Is there any puffing?

And 0.5A is quite high to charge a 350mah pack.

No puffing at all

I tried using the battery after full charge flight time almoat 2 mins shorter compare brand new battery

For overnight use flight time about 1 min something

Sounds like something is quite wrong with your lipo. Maybe it is not the greatest quality.