Batteries charging at a different voltage.

[-Dusty-]

Hello

Im charging up a couple of 4s batteries at the moment but there is differences between them during the charge.

One is charging at 15.5v and the other is charging at 16.8v. Is that a bit high or is the other one charging a bit low? I have the same settings for both of them.

 

[chevys10zr2003]

Hello

Im charging up a couple of 4s batteries at the moment but there is differences between them during the charge.

One is charging at 15.5v and the other is charging at 16.8v. Is that a bit high or is the other one charging a bit low? I have the same settings for both of them.

If they are charging their voltages will continue to increase. A fully charged 4s lipo is at 16.8 volts when all said and done (4.2 volts per cell x 4 cells = 16.8 volts). The only time to get concerned with lipos is if a cell drops below 3.0 volts. Then damage is being done to the cell.

 

[-Dusty-]

ah ok. The one charging at 15.5 must be the one I used yesterday, taking longer to charge. The one at 16.8 is still new and getting close to being fully charged

That makes sense. Thanks!