charge limit

[vargasesteban]

I have this issue
I calibrate my accucell 6 , imax b6 clone , turnigy 200w and my icharger 106b+ whith the same Multimeter
when i charge a 4s with the Icharger , the charge on the battery is 16.810v
but the others whith cheali charger firmware get 16.780

[stawel]

Hi vargasesteban,
what firmware has the Icharger, original or cheali-charger?
Are you using the balance port?

[vargasesteban]

Icharger has the original , o didn't know I can flash my I charger 106b+ whith cheali charger firmware

El 7/05/2014, a las 1:06 p.m., "Paweł Stawicki" notifications@github.com escribió:

Hi vargasesteban,
what firmware has the Icharger, original or cheali-charger?
Are you using the balance port?

—
Reply to this email directly or view it on GitHub.

[stawel]

Ok, this is my personal opinion:
I wouldn't consider this as a problem, this is why:

1. cheali-charger has a voltage limit set to 4.20V per cell,
   In your case the end voltage should be 16.80V totally,
2. at the charge end the battery is charged with constant voltage 4.20V and
   falling current until the current reaches Ic/10 (Ic - set charge current) then it stops.
   The battery has a small internal resistance so when the charge process ends
   the current goes form Ic/10 to 0mA, so the voltage should also drop a little bit.
3. if fact cheali-charger is doing a little better then the ICharger (my personal opinion :) )
   because ICharger exceeded the 4.20V limit, but it's also no a problem because
   the truly voltage limit is 4.235V (voltage above this value can damage the battery)
   all chargers use the 4.20V limit to have some error margin.
4. a voltage difference of 5mV per cell is is approximately equal to 0.5% less stored energy.