Flight Monkey Posted February 11, 2009 Share Posted February 11, 2009 posts Hi everyone, I have recently bought a twister aggressor 2.4 and I am trying to get as much air time as possible, to this end I bought two extra li-po`s, the bumph that comes with the model claims a flight time of 10 - 15 minutes, we all know about the fictitious claims eh?, however with flight times from full charge only being around 2-3mins, I thought that there was a real problem with either the battery , charger, or the model. if anyone else has has similar problems, may I suggest that they try charging the battery and using it straight away, the flight time for my heli has gone up to 9mins before the blue strobe appears. kind regards Don Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted February 11, 2009 Share Posted February 11, 2009 I would have thought the model would do 5-8 mins Don. Are you saying they don't perform if left around for a few days before use? Quote Link to comment Share on other sites More sharing options...
Owen Hailey Posted February 11, 2009 Share Posted February 11, 2009 Hi Don & David I have had this happen it seames that in the cold weather, that lipo's do not like the cold, if they are not at body temp then they go of the boil, and are way down on power I hold mine in my hand for a minit or so and all is well again. Happy Hovering Owen. Quote Link to comment Share on other sites More sharing options...
Flight Monkey Posted February 13, 2009 Author Share Posted February 13, 2009 David, I charged all three of the lipo`s the day before I was going to spend the morning with the chopper, all three batteries ran down within the first minute of getting off the ground. I was going to contact the model shop or Perkins thinking that there must be a problem with the charger or battery, to be sure that I was not missing something, I charged one up and used it straight away, this is when battery performed as it should giving me a flight time of approx 9mins. as I am new to this game, I thought someone else may have experienced similar problems. Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted February 13, 2009 Share Posted February 13, 2009 Hmm, Owen may have a point there Don. Have you kept using them to see if the problem occurs again? Quote Link to comment Share on other sites More sharing options...
Alan B Posted February 13, 2009 Share Posted February 13, 2009 If the supplied charger is the same as the Twister Skylift Chinook - then I would check the voltage of the Lipo's after charging. I found that mine was not charging them to full capacity before switching off, giving shorter flight times. Try disconnecting the battery from the charger when it has supposed to have charged it and then reconnect it again after a few minutes. Then see what happens - you might find it starts charging again. I have used my normal multi charger to charge the batteries and had no problems. Just a further thought Al Quote Link to comment Share on other sites More sharing options...
Owen Hailey Posted February 13, 2009 Share Posted February 13, 2009 Hi all The little chargers that come with the heli's all seam to give a diffrent charge, as I have got three walkera ones, and one esky, and one odd ball, and the only one that charges fully is the odd ball none branded one, the other all under charge. happy days Owen. Quote Link to comment Share on other sites More sharing options...
Gordon Low Posted February 13, 2009 Share Posted February 13, 2009 I had the same experienced with my CX2. If you are using the charger that came with the kit, I would suggest buying a proper charger system. I bought the Ripmax, sigma EQ. This gives a good charge and balances the cells. I also agree, if the batteries are cold or are charged in the cold then they will take a long time to charge. you need to keep them at room temperature. I would also advise that you buy a 12v battery to charge at the field or on the day. The battery will drop its charge slighjtly from one day to the next. technology its a wonderfull thing Gordon Quote Link to comment Share on other sites More sharing options...
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