'Widget' Posted November 17, 2008 Share Posted November 17, 2008 I recently purchased a 6volt 1500mA 2/3A cell Rx battery to use with my Spektrum Dx7 radio because I read somewhere it was safer to use 6v packs than the 4.8v packs if the voltage dropped below, I think it was 4.5v, you may suffer loss of radio contact. I have a charger which has 6v DC 120mA on the output for the Rx and I would like to know if this will charge ok and will the 2/3A cells have adequate capacity for an average afternoons flying ? Quote Link to comment Share on other sites More sharing options...
Always broke Posted November 17, 2008 Share Posted November 17, 2008 Your charger will be fine. My Capiche 140 EX uses about 225mA per flight of hard 3d and that has 25kG JR digitals in it so you will get plenty of flights with your 1500 ma pack. I ALWAYS test my RX packs befor every flight. Just a habit I got into , you can never be to carefull. 2/3A cells are very good. Much better at delivering higher currents than AA cells. I have a few packs made of them and they are a good comprimise on weight.Best is 2xA123. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted November 17, 2008 Share Posted November 17, 2008 I am not sure that is correct. A fully charged Nixx cell is around 1.5 to 1.6V fresh off the cooker, and a 6 volt pack is usually a reference to a 5 cell battery. 5 X 1.6V = 8V, so your 6V output charger will not be fully charging your battery.The cell capacity I agree with..it should suffice for a typical afternoon session, although I must say that 500 is not big for these days. Quote Link to comment Share on other sites More sharing options...
'Widget' Posted November 17, 2008 Author Share Posted November 17, 2008 Okay Timbo, if I use my Sigma Pro Peak charger I would set it to 6v, 1500mAh, NiMh ? Quote Link to comment Share on other sites More sharing options...
Always broke Posted November 17, 2008 Share Posted November 17, 2008 The capacity was stated at 1500 not 500 .1500 is a good capacity for most models. Also I would assume the the charger in question was for charging RX packs and there for it would have 6v written on it as my 4 cell one has 4.8v written on it Asuming this could be a mistake but I think that is what is ment.. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted November 17, 2008 Share Posted November 17, 2008 ooops -sorry - yes typo there - I knew he said 1500 - my mistake, but still meant that 1500 was not big by todays standards, if it had been 500 then I would have been less conservative with that comment if indeed that charger is for a 6V nominal pack thats fine, but the comment from AB was that the charger had 6V output. I cant say for sure A/B as I dont know the sigma charger software and interface, many chargers do indeed quote the nominal voltage and some the cell count, and some the fully charged voltage - a bit of a lottery really so check the instructions. To sum up, you need the charger to know that its handling a 5 cell pack, at nominal 6V and fully charged around 7.5 - 8V Quote Link to comment Share on other sites More sharing options...
'Widget' Posted November 18, 2008 Author Share Posted November 18, 2008 Okay, lots to go on, thanks everybody for your help on this one. Quote Link to comment Share on other sites More sharing options...
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