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Thread: Do i need to program esc converting to lipo battery?

  1. #1
    Newbie Member
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    Do i need to program esc converting to lipo battery?

    I have a brushless sunfire. It came with a programable 45a esc. It says its good for 7c nimh (8.4v) which came stock, or 2s lipo (7.4v). If i go to the lipo do i need to program the esc or is it plug and play? I ordered 2 lipo batteries and charger. Im just awaiting parts in the mail and i want to be ready when i get them. Any help will be greatly appreciated.

  2. #2
    Legendary Member
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    I think you asked this question twice with no answer on the former question. I don't drive a rc, car but from the little I know, nimh and lipo are two different batteries and obviously in voltage per cell.
    your esc will probably need to be programed for the battery especially on voltage cut off for type of battery. not really a problem on nimh but for lipos, you don't want to drain that until it quits. some people may say plug and play but performance my be affected from not getting the most out of your type of battery in using the correct voltage. can't believe they would sell this with nimh (junk) and say lipos (better) can be used. if you need the esc to program to lipo, now you need to purchase esc program card and lipo. Price now goes up.
    check the esc card for this model if there is selections for use of different batteries. that may answer your question on plug n play.

  3. #3
    Diamond Member Fred Huber's Avatar
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    Generally best to program when changing battery voltage/type or motor attached to the ESC.
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  4. #4
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    I did ask another question i was just looking for my options with battery. I didn't think id go lipo but i decided to try it. I wanted something to last for longer runs. Anyways i ordered the card to program the esc. It was $12 so no big deal. Im just curious what its programmed for now. The only 2 settings related to batery is voltage cut out which ill probably need to change. The other is lipo batteries but number 1 is auto. If thats selected it maybe ok to leave it but 2 is 2s so with card i could change it even if its not necessarily. So really id only need to change voltage cut off if its preset for something different which it probably is. Thanks for the help.

  5. #5
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    Program the lipo cut off at 3.80 if possible. if not, the next setting below that which there should be. depending on the C rating, lipos will put out a lot of amps for discharge but it's not good to drop the voltage too low. it will get hot and puffy and the IR will build up and dooms day is right around the corner. you may have to solder new connectors to fit the esc on the new lipo. hope you new lipos fit the battery box............

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