LiPo Batteries

HCRCC Safety Letter

October/November 2015

LiPo Batteries

    With the recent success of our latest Electric Fly-In, I just wanted to bring a little info to your attention.

     Our AMA magazine, Model Aviation, has had a great series of articles on batteries.

Starting in July (page 29),  this article describes the basics of Lipo's, choosing them, and how to use them safely. It is followed by the August (page 47) article, on how to best transport batteries. And lastly part three in Septembers issue, (page 45), the best way to charge them.

    I really hope all of you will go back and read these articles. We all can learn a few things from these articles, I know I did.

     Here are a few highlights, and tips that I felt were really good.

• Never charge batteries unattended

• Charge batteries in an isolated area away from flammable materials.

• Never charge batteries inside a hot vehicle

• Using your cars battery is not advisable (Cars have burned in the past)

• Triple check charge settings before starting the charge cycle

• Charge batteries at 1C to improve battery life

• Do not attempt to charge any pack if the unloaded individual cell voltages are less than 3.0 volts

• Allow batteries to cool between charges

• Don't overcharge (4.1 volts per cell, is optimal for battery life)

• Balance charge whenever possible

• Charge at 1C---A puffed/swollen battery should not be used.

• If motor, ESC, or battery is extremely hot after use, this is a sign that your setup is incorrect. Ask for help if you are not sure. There is a wealth of knowledge at HCRCC.  

                                               

     Finally I hope that all of you will read these articles, and continue to learn all about the wonderful things our hobby has to offer.   Stay safe.

                                                                         Larry Przyborowski