Philthy Posted November 29, 2014 Share Posted November 29, 2014 Hi trying to charge a new Orion Rocket sport 4200 lipo 25c 7.4v battery Settings on the charger are 4.2 7.4v (2s) every time it comes up with battery check low voltage Im sure i have the settings right but it aint working What have i missed? Cheers Philth Quote Link to comment Share on other sites More sharing options...
Tug Posted November 29, 2014 Share Posted November 29, 2014 What voltage are the cells reading? Have you connected the main battery leads or just the balance plug? Quote Link to comment Share on other sites More sharing options...
Philthy Posted November 29, 2014 Author Share Posted November 29, 2014 Not sure how to check what the cells are reading Yes the main cable Quote Link to comment Share on other sites More sharing options...
Tug Posted November 29, 2014 Share Posted November 29, 2014 Just plug the balance lead in and scroll to "balance charge", then it should read the cells for you. Quote Link to comment Share on other sites More sharing options...
Tamiyacowboy Posted November 29, 2014 Share Posted November 29, 2014 (edited) Hi trying to charge a new Orion Rocket sport 4200 lipo 25c 7.4v battery Settings on the charger are 4.2 7.4v (2s) every time it comes up with battery check low voltage Im sure i have the settings right but it aint working What have i missed? Cheers Philth quick question, is there a switch on the charger to select 4.2v or 7.4v you need to set the charger to its voltage output ie 4.2 or 7.4. volts. Do you have a lipo alarm/tester , its a little device that plugs onto your battery and tells you how much voltage is in the battery and then each cell in the battery is read out to, so a 7.4 battery would read cell 1 - 3.8v cell 2 - 3.8v total volt 7.6v a battery checker/alarm would be a very handy item for your toolbox and to help you check batterys before charging to see what state they are in. it also gives you a reading of each seperate cell inside the battery. the alarm can be set to a certain voltage ie : 3.7v when any cell in the battery gets to 3.7v the alarm will make a buzzy beeping, very loud to. i had a case of a 7.4 battery, it was missing its balance lead and was taped up somewhat by another rc hobbyist. popped my alarm onto it for a check and the alarm went crazy, cell 2 was at 0v, tested the second battery and both cells measure 1.1v alarm going crazy. BALANCE LEAD. this is a small set of wires that leave the battery, they are wired in such a way the charger can read them as single cells. this lead is BEST plugged into the charger to, it allows all the cells in the battery to be charged alone all at once. SOME cheap chargers do not come with a balance lead port, and can cause problems because they read a full voltage and not each cell on its own . Most new owners become tired of the cheap chargers and will upgrade to one that delivers everything you need. Edited November 29, 2014 by Tamiyacowboy Quote Link to comment Share on other sites More sharing options...
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