Is this a sign of a faulty cell ?

[Simon Bee]

I’ve got 4 Admiral 4S 4000s which I’ve used regularly for the last 6 months.
I only use them in my WOT4 and a couple now show 14 % after only about 4-5 mins flying. It’s never 15% or 20% but always the same figure 14% which seems strange.
They’re not puffy and the resistances are low, just wondering whether it’s time to get rid and why is it always 14% ??

[Simon Bee]

Just wondering whether it’s my Overlander battery checker. When the voltage reaches about 15v, the battery checker jumps from 14% to about 30%

[RRHandy]

I don't rely on the percent value of any of the checkers, I look at what the cell values are, 3.7 to 3.8 per cell and that is the value that is most important for storage and that is where I like land my planes so I test till I hit that #

To answer your question, that depends on if you flew longer or used more throttle during the flight.

[Simon Bee]

Thanks for the reply. The checker is showing correct voltage but wrong percentage. At 15 v for a 4S it should say about 27% capacity NOT 14%. At 15v and below it can’t calculate the percentage.

[Evan D]

If you check with a voltmeter what does it say each cell is?

[RRHandy]

Thanks for the reply. The checker is showing correct voltage but wrong percentage. At 15 v for a 4S it should say about 27% capacity NOT 14%. At 15v and below it can’t calculate the percentage.

That is why I don't pay any attention to % I go with cell voltage.

P.S. I look at IR when charging and make sure that is balanced also.

[Alan 3D]

You're obviously have a bad meter cell checker.

[Alan 3D]

My capacity cell checker will not read one cell if it is below a certain voltage after a flight giving a 3.9 volts which is incorrect 99% of the time. This is because the meter is only designed for two cell or higher.