old AA nihms
03-23-2009, 09:28 AM
#16
ok, I am now pushing 29hours @ .1amp. My charger claims it's putting on average 100mah an hour, putting me close to 2900 mahs. Is this right?
--pakk
--pakk
03-23-2009, 10:26 AM
#18
but what doesn't make sense to me is that these are 2000mah batteries. So aren't I well over the mah they are suppose to hold? Or is it 2000x8=16000 mah which is going to be a long long time...
--pakk
--pakk
03-23-2009, 11:18 AM
#19
Tech Fanatic
iTrader: (1)
Mine are 2500mah's and one day I out a collective 3700MAH into them! I think as long as they aren't getting hot you should be OK. You could always stop the charge and let them rest for a few hours then start again. Remember you said that your cells we're sitting for 2-3 years right? I'm sure they were WAY bellow their nominal capacity, so not only are you charging them...you've got to bring them back to life too.
These are just my opinions on this topic, I could be wrong, but I think your OK
Jay
These are just my opinions on this topic, I could be wrong, but I think your OK
Jay
03-23-2009, 11:21 AM
#20
So should I just leave them on there till the charger thinks they are good? Normally my charger starts getting really low on amps then will beap letting me know they are done. Am I waiting for that with these cells? I am now 30hours+.
Sorry if I have a lot of dumb questions.
--pakk
Sorry if I have a lot of dumb questions.
--pakk
03-23-2009, 11:41 AM
#22
Tech Fanatic
iTrader: (1)
As long as you setup your charger properly I.E. how many cells, and charge rate it should "Delta Peak" on it's own. Like I said if your really worried about it stop the charge for a hour or so. What voltage are you at right now? and on how many cells?
Right now I'm charging my 8cell and my voltage is....about 11.7v right now... that's while charging. Once I stop it will fall, probably to the high 10 volt range.
Jay
Right now I'm charging my 8cell and my voltage is....about 11.7v right now... that's while charging. Once I stop it will fall, probably to the high 10 volt range.
Jay
03-23-2009, 11:45 AM
#23
8 cells at 11.4 atm. It just seems like 30+ hours @ .1 is too long. Ill leave it on there and see what happens.
--pakk
--pakk
03-23-2009, 11:46 AM
#24
If I had a radio (other than my DX6) that still took a 8 cell holder, I would just put a 2500Mah 11.1v LiPo in it, and charge it once a month. 
TrueRC 2500mAh 11.1V 3S1P pack TX pack = 30$ + ship
(just search for DX6 to find it....one long page)
http://home.comcast.net/~truerc/read...eady_packs.htm
I am going to order the above for my DX6, I just have not bothered yet as it's not really warm enough out for flying....I just keep putting it off.
TrueRC 2500mAh 11.1V 3S1P pack TX pack = 30$ + ship
(just search for DX6 to find it....one long page)
http://home.comcast.net/~truerc/read...eady_packs.htm
I am going to order the above for my DX6, I just have not bothered yet as it's not really warm enough out for flying....I just keep putting it off.
03-23-2009, 11:50 AM
#26
Tech Fanatic
iTrader: (1)
The problem that I'VE SEEN with AA cells is that if you charge higher than .1 or .2 amps they tend to false peak. Like I said earlier in this post, bringing back old cells takes a LOT of time and patience.
I think your at the point where you can stop your charge, wait a couple of hours and start a discharge cycle at about .2 amps (this is going to take a long time too) After that you've got to charge at .1A again, then they should be ready for use
Jay
I think your at the point where you can stop your charge, wait a couple of hours and start a discharge cycle at about .2 amps (this is going to take a long time too) After that you've got to charge at .1A again, then they should be ready for use
Jay
03-23-2009, 11:57 AM
#27
Tech Fanatic
iTrader: (1)
If I had a radio (other than my DX6) that still took a 8 cell holder, I would just put a 2500Mah 11.1v LiPo in it, and charge it once a month.
TrueRC 2500mAh 11.1V 3S1P pack TX pack = 30$ + ship
(just search for DX6 to find it....one long page)
http://home.comcast.net/~truerc/read...eady_packs.htm
I am going to order the above for my DX6, I just have not bothered yet as it's not really warm enough out for flying....I just keep putting it off.
TrueRC 2500mAh 11.1V 3S1P pack TX pack = 30$ + ship
(just search for DX6 to find it....one long page)
http://home.comcast.net/~truerc/read...eady_packs.htm
I am going to order the above for my DX6, I just have not bothered yet as it's not really warm enough out for flying....I just keep putting it off.
J
03-23-2009, 12:39 PM
#28
The problem that I'VE SEEN with AA cells is that if you charge higher than .1 or .2 amps they tend to false peak. Like I said earlier in this post, bringing back old cells takes a LOT of time and patience.
I think your at the point where you can stop your charge, wait a couple of hours and start a discharge cycle at about .2 amps (this is going to take a long time too) After that you've got to charge at .1A again, then they should be ready for use
Jay
I think your at the point where you can stop your charge, wait a couple of hours and start a discharge cycle at about .2 amps (this is going to take a long time too) After that you've got to charge at .1A again, then they should be ready for use
Jay
It even has a little fan that kicks on to cool the batteries, as they come off too hot to hold almost. But you think being a manufacturer they know what they are doing?
This is it.....works great so far.....wonder how the battery life is going to be.....
http://www.amazon.com/Energizer-Rech...YYVNS1KFBHRVMH
03-23-2009, 12:54 PM
#30
I might get a 2nd one for myself, to have a additional charger for the track for AA's.....I have a stockpile of Alkaline AA's currently, and the new Losi\Spektrum seem to last a really really long time on a set. The DX3S manual claims up to 16 hours of use.