View Full Version : Help! Best way to charge a new Ni-MH
FreeGlide
Mar 28, 2008, 03:34 PM
Just picked up a new Rx battery. 4.8v 900 mah Ni-MH. What is the best way to charge this battery to ensure a long healthy life?
Thanks,
Mark
Steve Guinn
Mar 28, 2008, 04:01 PM
The chemistry changes so quickly that I am not sure this is still correct, but, a couple of years ago the recommended forming charge was 1/10 of the capacity for at least 15 hours.
Steve Guinn
Mar 28, 2008, 04:06 PM
You might search here...
http://www.rcgroups.com/forums/search.php?searchid=14343740
FreeGlide
Mar 28, 2008, 04:48 PM
Thanks, the link has what I need.
Mark
Steve Guinn
Mar 28, 2008, 05:02 PM
You're welcome,
I typed "Forming Charge" in the search engine and it brought those up.
Ricardo RW
Mar 29, 2008, 02:33 PM
You might search here...
http://www.rcgroups.com/forums/search.php?searchid=14343740
Yikes, this link doesn't work for me... Is that 'forming charge' on the DYI Elec. forum search?
Steve Guinn
Mar 29, 2008, 02:44 PM
Somebody broke it :(
Try this one...
http://www.rcgroups.com/forums/search.php?searchid=14356216
Steve Guinn
Mar 29, 2008, 02:46 PM
It is the search button on the top right of this page.
Try advanced search.
XJet
Mar 29, 2008, 03:19 PM
For the best forming charge, use your wall-wart charger.
Since it's a 900mAH battery and the average wall-wart puts out about 60mA, you'll need to charge for around 15-16 hours.
There's more information on NiMH cells and forming charges here (http://www.rcmodelreviews.com/baffledbybatteries2.shtml)
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