Wine Country Flyers Model Aircraft Club Forum

Coming back from the ancient Ni-Cad era I must do my homework and get myself familar with the world of Lithium-Polymer. The one thing I noticed when I touch the subject is the amount of "WARNING" signs used, and the horror stories of burnt cars,houses,garages...you name it. Here is when it get's confusing studying all the websites. When is a LI-PO fully charged?. Each cell is carrying 3.7 volts right. In my case a 3 cell battery delivers 11.1 volt (10C). Some sites tell us to charge to 11.1 volt others say you can charge each cell to max 4.2 (=12.6v) Which charge would give 10 minutes of flying time? Is any over 12v considered an overcharge?
Right now I have it charged to 11.45 volts. I was also told (Adam's advise) never to fully charge the battery unless it will be in use shortly after. I don't dare to charge it any more before this issue is resolved.

You can tell I am still learning having brought this hobby back after a 40 year break.

Kaj aka Kilooskarhotel

Hello Kaj,

   Your right about the voltage ;D. When a battery is fully charged it is at 4.2 volts per cell. 3 cell=12.6 volts. Having your battery at 11.45 while in storage is fine and will not hurt the battery.
Storing your Batteries at full charge for long periods is not good for the cells  :(. As long as you
follow the directions owning a lipo is not that scary :).  One of the best places to get advice is from
the local hobby shops. Jakes in Rohnert Park is a great place to get hooked up with some new
equipment. You should come to the Next club meeting and we could have a discussion on it if you
want. It's at the Vet's building in S.R. in the North room on the third Tuesday of the month.

Adam

Thanks Adam. I will visit Jakes in Rohnert Park soon. I will also take my C182 to the Field this weekend. Maybe you're all in Reno.
...In the mean time I will charge up that Li-Po