lipo swelling - RC Groups
Thread Tools
Feb 06, 2013, 02:59 AM
Registered User
Help!

lipo swelling


hi,

I have some turnigy lipos from hobbyking that i have used about 4 times.
one is slightly swollen (if i push on the middle of the side it makes a pop when the heatshrink springs back)
Cycle:
balance charge at 2.2amps (for 2200mah) with turnigy accucel 6.
Fly with my bixler fpv.
Take home and charge to storage and leave them untill i need them.

i keep them in my room. It is summer so there is verying temperature but i havent found anything that suggests this could damage them.
in my room ranges from about 25 to 40 degrees celcius.

I have moved them down stairs where it is a more constant, cooler temp.


any explenation as to why this has happened would be much appreciated as i have just recieved 2 zippy 3000mah 3s batterys and dont want to damage them.

thanks.
Sign up now
to remove ads between posts
Feb 06, 2013, 03:28 AM
Registered User
You say you've only used them four times, but how old are they? How long have they been stored at temperatures up to 40 degrees?

Storing at a cooler temperature can only help.
Feb 06, 2013, 03:31 AM
Registered User
thanks.

can you tell me the minimum and maximum voltage per cell for lipos?
and is it okay to charge at 2.2amps? could i go higher?
Feb 06, 2013, 07:57 AM
Registered User
ggcrandall1's Avatar
LiPo cell volts:
4.2V = full charge
3.85V = 50% charge (storage level)
3.7V = minimum at rest voltage
3.3V = minimum loaded voltage
3.0V = 0% charge. Never go below

2.2 amp charge is fine. Many, including myself, feel it would be OK to go as high as 6.6 amps.

Glen
Feb 07, 2013, 02:47 AM
Registered User
thanks glen,

How long do your turnigy lipos last at high charge rate?
And what is the C of a pack and how do you work it out?
Feb 07, 2013, 06:39 AM
Southern Pride
everydayflyer's Avatar
Perhaps this will prove helpful.

https://www.rcgroups.com/forums/show...61&postcount=1


Charles
Feb 08, 2013, 04:25 AM
Registered User
Thanks charles!


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Do LiPos always swell before exploding/burning? HankF Batteries and Chargers 16 Sep 04, 2005 01:16 PM
Help! Slight swelling on lipo pack Tengler Batteries and Chargers 1 Jul 20, 2005 05:24 PM
TP Lipo's In Parallel swell. :( Arctic@1M Batteries and Chargers 11 Apr 06, 2005 10:39 PM
Question Do Lipos Always Swell Dan Baldwin Batteries and Chargers 3 Aug 12, 2004 07:20 PM
Tanic Lipo pack swells Caveman Batteries and Chargers 24 Mar 29, 2004 08:52 AM