Whats the best Amps to charge this lipo @ Goto page Previous1, 2
Author
Thread
Glen Experienced Roboteer
Joined: 16 Jun 2004
Posts: 9481
Location: Where you least expect
So was just reading the thunderpower lipo care guide for when my big lipo rocks up, Interesting that it recommends that you not leave their high C packs fully charged for more than 1 hour! WTF! (other places say no longer than a week) and store them at 50% charge for any long period of time.
Anybody know the reasoning behind this? Can't say I've noticed degradation on any of my lipos leaving them full charged but i won't be doing it from now on >.> _________________ www.demon50s.com - Minimoto parts
http://www.youtube.com/user/HyzerGlen - Videoooozzz
Last edited by Glen on Tue Oct 04, 2011 4:22 pm; edited 2 times in total
Tue Oct 04, 2011 3:57 pm
Jaemus Experienced Roboteer
Joined: 01 Apr 2009
Posts: 2674
Location: NSW
ugh! thats really irritating if true _________________ <Patrician|Away> what does your robot do, sam
<bovril> it collects data about the surrounding environment, then discards it and drives into walls
Tue Oct 04, 2011 4:21 pm
Valen Experienced Roboteer
Joined: 07 Jul 2004
Posts: 4436
Location: Sydney
lipo's get damaged any time they get charged to more than ~4V or so so i presume keeping them in a charged state would potentially allow that process to continue.
I think its plating out metallic lithium or some such.
"military long life" cells get charged to 3.92V
I wish I could set the charge voltage on my chargers, the extra capacity is like 10% but it will shorten the cycle life quite drastically.
(anything other than A123 has like a 2 year calendar life though so you do have that as a tradeoff) _________________ Mechanical engineers build weapons, civil engineers build targets
Sat Oct 08, 2011 8:33 pm
miles&Jules Experienced Roboteer
Joined: 19 May 2010
Posts: 3973
Location: ipswich QLD
Well I can vouch for that every lipo we have had has shit itself ...whether its over charge under charge or leaving it on... till it swells up....the a123's just keep going! The only time we have had one blow up was when we weren't balancing it. We love em we plan to keep using em for feathers. _________________ Miles Blow - Julie Pitts
www.mulesfilm.com.au www.wombokforest.com.au
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum