Geoff Daunt Posted January 30, 2010 Share Posted January 30, 2010 Hi all. I am building a Greenly Glider Tug,powered bu a DA50R petrol engine. The ignition system requires 5.2 to 6 V max. I propose using a 7.4 Lipo with a ALIGN RCE-B6X BEC regulator to drop the V down to 5.8V I now know that a ESC will continue to draw current from a Lipo even if switched off. Guess how l know that.!!!! ...so now l always disconnect my lipo after flying( a glider) Why it does that l have no idea so maybe one of you elec. wizards can tell me. My main qusstion is will the V regulator do the same if left connected in circuit,even if switched off.? I ask the qustion before l consider installation so l can consider positions of switches/access to lipo etc. After all with Nicad or NiMH l do not consider disconnecting the reciever after flying l just swith off !! Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 30, 2010 Share Posted January 30, 2010 Yes it will. You MUST disconnect the battery from anything and everything afetr flight. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 30, 2010 Share Posted January 30, 2010 Think of it like a wall wart style transformer, the type that charge up your mobile phone, or low voltage lamps etc. Even when the phone is not connected, the mains are still feeding the primary coil of the transformer, and current is flowing.Incidentally " just switching off " is exactly the same as disconnecting ther battery! Edited By Timbo - Administrator on 30/01/2010 12:33:19 Quote Link to comment Share on other sites More sharing options...
Geoff Daunt Posted January 30, 2010 Author Share Posted January 30, 2010 Many thanks Timbo. I have a heavy duty 2 way lever position switch from SMServices which i was going to use to turn on the power for the ignition system.Will that isolate the battery or should l still disconnect the Lipo leads afer flying for good practce. Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted January 30, 2010 Share Posted January 30, 2010 If you put the switch in between the battery and regulator the battery will be isolated. If you put it between the regulator and ignition unit the battery will continue to power the regulator, only a few mA but if you left it connected for a period of time it would eventually completely flatten the battery. I would also disconnect the battery after a days flying from a safety standpoint, if there was a subsequent short then the Lipo (or any other high power battery) could cause a fire. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted January 30, 2010 Share Posted January 30, 2010 And anyway, preferred protocol is to remove LiPo battery for charging. Quote Link to comment Share on other sites More sharing options...
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