Switching to LiPo's

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  • Wake Maker
    Junior Member
    • Jul 2007
    • 24

    #1

    Switching to LiPo's

    Hello all. I have a SV that has all sock motor, ESC and one set of Venom NiMh batts. In an earlier post someone was stating that holding onto NiMh batts was a loosing battle. I need to order some new batts beccause I only have one set now and would like some recomendations on what to do about switching over. What do I need to do to the ESC, BEC and what size or type LiPo's do I need? I have a 977 charger, how do I charge them and how long does it take to charge? All the LiPo numbers and differences are confusing me. Thanks for any help with this one.
  • Mich. Maniac
    Banned
    • Apr 2007
    • 1384

    #2
    what are the voltage of your old cells?? 7.2?

    Comment

    • hkusp45
      Senior Member
      • Jun 2007
      • 299

      #3
      I run two of the orion 4800 platium lipos in my SV. It makes a huge differance!! A little pricey but worth it!!

      check out the link:

      NAMBA #581
      Q mono NAMBA record holder
      'REMEMBER SOME PEOPLE ARE ALIVE SIMPLY BECAUSE IT IS ILLEGAL TO SHOOT THEM'

      Comment

      • Wake Maker
        Junior Member
        • Jul 2007
        • 24

        #4
        I am running Venom 3600 7.2 packs right now. The Orion packs look great. However, I need two, is that correct? Plus on thier website it says do not use MRC chargers for some reason. I have a MRC Super Brain 977 that claims you can charge LiPo's. Am I mistaken? With these LiPo's do I need a different ESC or use a BEC? Help with the follow up questions is appreciated!

        Comment

        • Mich. Maniac
          Banned
          • Apr 2007
          • 1384

          #5
          I use all venom lipo's, I have never had trouble and they hit their numbers constantly right on the money, full charge and min charge through esc. I have to say they are pricey but great power to weight and longer and longer runtimes. And as for packs I use the 11.1 2100 20c packs. 4 in my boat and they work for my helis too

          Comment

          • revin9k
            Junior Member
            • Jul 2007
            • 7

            #6
            hey i just got my sv27 and i bought some Max Amps 4000mah packs. they were like 70 bucks each and are rated with 80 amps continous 120 surge. my perblem is that i bought the MRC 969 pro before hearing that they dont work well for lipo's. my problem is that i dont know if i should charge my new packs with this charger? can anyone chime in that knows more. :)

            Comment

            • Tunda
              Eh no steal my slipa
              • Apr 2007
              • 754

              #7
              I have 2 super brain 977 mrc chargers and have no problems. I charge my max amp lipos with no probs. Just make sure you read the directions good. I have 4 8000 mah 7.4v and 2 6000 mah 7.4v andthey are all fine.............
              Hawaiian Tunda

              Comment

              • revin9k
                Junior Member
                • Jul 2007
                • 7

                #8
                i downloaded the directions and its very vaige for the lipo part. i just dont know what to do for "timed charge" what do you put there? also what about discharge time and for cell count do you put 2 if its a 2s1p? thanks for the help!!

                Comment

                • Tunda
                  Eh no steal my slipa
                  • Apr 2007
                  • 754

                  #9
                  mine dose not have timed charge and yes 2 cell.
                  Hawaiian Tunda

                  Comment

                  • Diegoboy
                    Administrator
                    • Mar 2007
                    • 7244

                    #10
                    I posed a question to the pro at my LHS. He didn't have an answer immediately, so he called Aquacraft. He told me that without sticking their neck on the chopping block, my idea should be fine.
                    (note my signature at this time)
                    My question was...
                    On the stock SV27 ESC, could I add a LVC and run Lipos. One 7.2V and one 11.1V?
                    Last edited by Diegoboy; 07-21-2007, 09:24 AM.
                    "A quick temper will make a fool of you soon enough."
                    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bruce Lee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

                    Comment

                    • Superveekiller7
                      Member
                      • Jun 2007
                      • 38

                      #11
                      Hey would it be better to run a 5s lipo in my boat rated 4250 mah or run it with 2s and 3s 4250, which would give me more power?

                      Comment

                      • saleens7
                        Fast Electric Addict!
                        • Apr 2007
                        • 1108

                        #12
                        .................
                        Last edited by saleens7; 07-23-2007, 07:30 PM.
                        saleens7, the wookie of rc boating

                        Comment

                        • Jeepers
                          Fast Electric Addict!
                          • May 2007
                          • 1973

                          #13
                          Originally posted by Diegoboy
                          I posed a question to the pro at my LHS. He didn't have an answer immediately, so he called Aquacraft. He told me that without sticking their neck on the chopping block, my idea should be fine.
                          (note my signature at this time)
                          My question was...
                          On the stock SV27 ESC, could I add a LVC and run Lipos. One 7.2V and one 11.1V?
                          yes you can run a low voltage cut off and run lipos.

                          are you asking about using a 7.4 volt and an 11.1volt battery at the same time?

                          sorry not understanding your question at this time

                          Comment

                          • Diegoboy
                            Administrator
                            • Mar 2007
                            • 7244

                            #14
                            Yes. One side would have a 7.2V lipo. The other side would have an 11.1V lipo. Aquacraft, without sticking their neck on the chopping block, pretty much told my LHS that the SV27 ESC should handle it with a Low Voltage Cutoff. (to protect the Lipos from discharging too far)
                            (******* SEE SIGNATURE********)
                            Last edited by Diegoboy; 07-21-2007, 11:15 PM.
                            "A quick temper will make a fool of you soon enough."
                            . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bruce Lee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

                            Comment

                            • Superveekiller7
                              Member
                              • Jun 2007
                              • 38

                              #15
                              you dont have to discharge lipos

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