SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Dec 28, 2003, 10:40 AM
Registered User
Joined Oct 2003
24 Posts
Question
How do I bring my batteries back to life?

Still new to electric flight and liking it more and more. I recently bought a Triton battery charger (for my LHM Corona) and figured I would try use it to charge my Firebird XL batteries I haven't used for well over a year. These batteries are 6 cell (2/3 AA I think) 7.2v 900 mah NiMh. I made a charging plug from the original wall charger. I tried charging one pack at 0.1 mah for 10 hours - it would only run the motor for about 2 minutes before shutting off. A second pack was similar (actually a shorter run time)

I guess what I am asking is - are these batteries toast or is there a way to bring these batteries back to life - through cycling or ??? I'm still learning how to best use my Triton.

Thanks for your help.
mr_ken is offline Find More Posts by mr_ken
Reply With Quote
Sign up now
to remove ads between posts
Old Dec 28, 2003, 11:24 AM
RIP Ric
Andy W's Avatar
Marietta, GA
Joined Jun 1999
43,312 Posts
Slow-charge them @ .1A for 15 hours. Then cycle them on auto at least 5 times. Capacity, and charge/discharge rate should increase with each cycle.
..a
Andy W is offline Find More Posts by Andy W
Reply With Quote
Old Dec 28, 2003, 11:28 AM
but it's a nice obsession
jgmtens's Avatar
Sandy, Utah
Joined Apr 2003
1,049 Posts
I'm not sure but it seems to me that NiMh batteries, unlike Nicads, die if they are not exercised. That has been my experience with several 800mah NiMh packs that sat around for a couple of months. I tried slow charging them several times but they never came back. Now I make sure to peak charge my NiMh packs about once a week to keep them fit.

Jon
jgmtens is offline Find More Posts by jgmtens
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
How do i keep my batteries in shape without spending money? Dogzilla Batteries and Chargers 10 Aug 27, 2004 08:26 AM
How long do I charge my batteries? jmendes Batteries and Chargers 3 Jul 16, 2004 04:20 AM
How do I move my Zagi cg back? emaij Foamies (Kits) 3 May 29, 2001 02:10 PM
How do i make my own hot wire rig? PunkerTFC Electric Plane Talk 21 Apr 22, 2001 10:50 PM
Help! How do I retime my 6327 Graupner Speed 480 race motor for a gearbox. Joe Elston Electric Plane Talk 6 Apr 20, 2001 12:56 PM