Li-Poly batteries

[PaulP]

Has anyone in our group tried the new Lithium Poly type batteries? Success? Problems?

There can be some problems associated with their handling (major fire source if you aren't careful) but they offer a weight advantage for those who are after the last little ounce.


Paul P

[Doug Wotring]

I have not tried them but know guys that use them in electric planes.

Definite weight and size advantage. Fire is a concern both during operation and charging....not an issue if you handle them exactly like your supposed to.

They require a charger that is capable of charging Litium batts however an added expense over that of the battery

[Shawn Bivins]

how much more are these batteries relative to nimh? Where can you buy them...

Shawn Bivins
EC-12 #2999
Mid-Atlantic Yacht Club

[MichaelJ2K]

A couple of sources for Li-Poly is Batteries America and Radical RC. You can read up on Ni-cads, Ni-mh and Li-poly batteries on Ezone.

FWIW, li-po's are usually used for power sources, not used on radios. Personally, I would not use a li-po on the radio as the voltage must be regulated for the radio and winch. I'm really not sure of the weight advantage gained but I do know that you can stay on the pond for a very long time.

[yachtie]

FWIW - I have been using 2100Mah Nicads - as used in rc cars - for the last 4 years. Whilst not as light they fit snuggly down inside the keel in front of the rudder.
Best of all they are very cheap - around $40 NZD ($27 USD)! and I can get a full days racing without battery change in light - moderate breeze. in our heavy air (20 knots true + ) a change at lunchtime ensures safety![:D]

Chris
NZL1 Longtack