lipo v-level
 

if I have a 7.4V Lipo which peak charges till 8.44V... and I have a battery voltage check... what level can it drop to before I need to charge? basically my remote has an alarm which I want to set...

RE: lipo v-level
 

I think current thinking (ha ha) is 3.3 volts/cell, i.e. 6.6V for you. Used to be 3.2volts/cell. However, if you get to that point when you are flying, things are not going well and your ESC may start limiting power to the motor, or shutting it down.

RE: lipo v-level
 

Actually the normal cutoff is 3.0 V, which leaves you a good safety margin.  You can go as low as 2.7 V but you're taking a big chance, and the additional power you'll get is less than 1%.

RE: lipo v-level
 

I should have said that the voltages quoted are per series cell.  Your 7.4 V. pack is probably refered to as a 2S1P (2 series, 1 parallel) pack.  Even with a 2S2P (2 series of 2 parallel cells) pack you're still looking at charging at a voltage for the 2 series, and at a current for the specified pack capacity, which would be twice the capacity of each of the 4 cells.  I hope this isn't too confusing.  I'll be watching this post if you need clarification.

The normal maximum charging voltage for a Li-poly cell is 4.1 to 4.23 V per series cell.