Andrew767 Posted April 3, 2014 Share Posted April 3, 2014 I need a new pack for my 7CAP and although i could buy another LSD type, i was wondering if any forum members had used a LiFe pack for this purpose and what their thoughts and experiences might be before i buy one. Thanks Andrew Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted April 3, 2014 Share Posted April 3, 2014 Yep..I use one in my Fuby 10C......lasts for ever & doesn't go flat between flying sessions. I charge it up & usually get 4-5 hours usage before I chicken out & recharge it. It's usually still half full!!! I'd say buy with confidence Andrew.....MUCH better than NiMHs..... Edited By Steve Hargreaves - Moderator on 03/04/2014 22:24:22 Quote Link to comment Share on other sites More sharing options...
Andrew767 Posted April 3, 2014 Author Share Posted April 3, 2014 Thanks Steve I think i'm just a little cautious because of reports of the voltage just dropping off a cliff near the end of use. What capacity is yours?. I was considering a 1500mah pack from Hobbyking. Andrew Quote Link to comment Share on other sites More sharing options...
Subalib Posted April 4, 2014 Share Posted April 4, 2014 I have a LiFe pack in my JR Tx and I agree with Steve it just goes and goes and I end up charging it just to be sure. Mine is a Hobbyking pack and is 1800mAH. I wouldn't be too concerned about the voltage falling off the cliff as in my experience NiMh and NiCad packs are much worse. David Quote Link to comment Share on other sites More sharing options...
john melia 1 Posted April 4, 2014 Share Posted April 4, 2014 Posted by Subalib on 04/04/2014 03:02:45: I have a LiFe pack in my JR Tx and I agree with Steve it just goes and goes and I end up charging it just to be sure. Mine is a Hobbyking pack and is 1800mAH. I wouldn't be too concerned about the voltage falling off the cliff as in my experience NiMh and NiCad packs are much worse. David Would it fit in a spektrum dx7s Quote Link to comment Share on other sites More sharing options...
Mowerman Posted April 4, 2014 Share Posted April 4, 2014 The owner of our LMS 'totaled' a model when a LiFe reciever pack failed in flight. I doubt if he would recomend them. Edited By Mowerman on 04/04/2014 10:10:50 Quote Link to comment Share on other sites More sharing options...
Simon Chambers Posted April 4, 2014 Share Posted April 4, 2014 Posted by Mowerman on 04/04/2014 10:08:56: The owner of our LMS 'totaled' a model when a LiFe reciever pack failed in flight. I doubt if he would recomend them. Edited By Mowerman on 04/04/2014 10:10:50 I totaled a model when a wooden wing failed in flight. I doubt I'll recommend using wooden wings in planes again... Quote Link to comment Share on other sites More sharing options...
Andrew767 Posted April 4, 2014 Author Share Posted April 4, 2014 @ David....Thanks @Mowerman......Cheers Roy........Ever the optomist eh!! Quote Link to comment Share on other sites More sharing options...
Simon Chambers Posted April 4, 2014 Share Posted April 4, 2014 On another note, LiFe packs are great and work really well both as Tx packs and Rx packs. They have a great flat discharge curve which means the servos react the same way, no matter how discharged the pack is. Also they're a lot safer charging than the equivalent LiPo. However you have to be aware of the flat discharge curve means you can't check how much life a pack has by how many volts it is reading. The only accurate way of determining that is when you recharge the pack to see how many mAh go back into it. When the voltage starts dropping on a LiFe pack, the pack is almost empty. However given the large capacity of LiFe packs, most planes will get a good sessions flying in before they need recharging. Si. Quote Link to comment Share on other sites More sharing options...
Dave Miller Posted April 4, 2014 Share Posted April 4, 2014 JR fit these batteries to their transmitters and I'm very happy with mine. Quote Link to comment Share on other sites More sharing options...
john melia 1 Posted April 4, 2014 Share Posted April 4, 2014 Which life pack would fit a spektrum dx7s then Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted April 4, 2014 Share Posted April 4, 2014 I use them Andrew no complaints last ages and very light. Quote Link to comment Share on other sites More sharing options...
john melia 1 Posted April 4, 2014 Share Posted April 4, 2014 Would this **LINK** fit a spektrum dx7 , could I use the balance plug to connect to tx , as the tx has the same connector by the looks of it Quote Link to comment Share on other sites More sharing options...
crispin church Posted April 4, 2014 Share Posted April 4, 2014 i have used life for over a year now in my spectrum dx6i 2 cell no regulator Quote Link to comment Share on other sites More sharing options...
Steve Hargreaves - Moderator Posted April 4, 2014 Share Posted April 4, 2014 Posted by Andrew767 on 03/04/2014 22:56:59: Thanks Steve I think i'm just a little cautious because of reports of the voltage just dropping off a cliff near the end of use. What capacity is yours?. I was considering a 1500mah pack from Hobbyking. Andrew LiFe batteries do indeed have a steep voltage drop as they become discharged but in practice this just isn't an issue....mine sits at 9.8/9.7 volts for literally hours of use. My best todate is 5 1/2 hours over about 3 months before I wimped out & charged it up again.....it took about 800mAh... My unit is an 1800mAh battery from Hobby King....its been in use for about 3 years now. In fact al my fleet are LiFe powered these days.....apart from one I'm experimenting with HV servos fed by a 2S LiPo..... Quote Link to comment Share on other sites More sharing options...
john melia 1 Posted April 4, 2014 Share Posted April 4, 2014 Anyone got a spektrum tx with a life battery in .? If so what are its dimensions and mah Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted April 4, 2014 Share Posted April 4, 2014 John. Check out his **LINK** for the LiPo for a DX7s then check the dimensions against your LiFe **LINK** So it aint going to fit. The max width of the battery bay (A) Length in MM is 75. Kev Edited By Kevin Fairgrieve on 04/04/2014 19:15:55 Quote Link to comment Share on other sites More sharing options...
Andrew767 Posted April 4, 2014 Author Share Posted April 4, 2014 Thanks for all the answers....I'm going to have a punt on one of these as the pros seem to outweigh the cons. Despite Mowermans (Calderdales very own poison pensioner!!) misgivings. I'll let you know how i get on as the season progresses............Now....I really must get on with that Mini Jazz build. Andrew Quote Link to comment Share on other sites More sharing options...
john melia 1 Posted April 5, 2014 Share Posted April 5, 2014 So it seems that there is no life rx packs of the appropriate size to fit a spektrum dx7s ..... typical , anyone got any recommendations on what I could replace the original nimh pack with . Kevin that lipo one would fit I think Quote Link to comment Share on other sites More sharing options...
Mowerman Posted April 5, 2014 Share Posted April 5, 2014 Quote Link to comment Share on other sites More sharing options...
crispin church Posted April 5, 2014 Share Posted April 5, 2014 are you sure there is not room inside the tx on my DX6i i put life battery inside tx and just a balance plug and charge plug in where the aa went Quote Link to comment Share on other sites More sharing options...
john melia 1 Posted April 5, 2014 Share Posted April 5, 2014 Posted by crispin church on 05/04/2014 10:50:00: are you sure there is not room inside the tx on my DX6i i put life battery inside tx and just a balance plug and charge plug in where the aa went Can you take a pic please Quote Link to comment Share on other sites More sharing options...
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