storing lipo`s
01-15-2012 | 03:54 PM
#1
Thread Starter
Tech Initiate
Joined: Jan 2012
Posts: 42
From: athens.ga.
storing lipo`s
is it ok to store a lipo for a week if it`s been charged but not used that day. or do in need to do the storage thing on my charger. and also where can i get a balancing plug extension . the balance lead on these packs are almost to short to use.
Last edited by hobbyfreak; 01-15-2012 at 06:09 PM.
01-15-2012 | 06:49 PM
#3
Tech Master
iTrader: (3)
Joined: Jul 2008
Posts: 1,465
From: Melbourne, Australia
Anytime when not in use (short term storage) - 3.85v / cell
For longterm storage (months) - Ziplock style freezer bag in the fridge
As soon as a lipo is fully charged it starts to degrade, its internal resistance slowly rises over time and the effect is cumulative
Charge them from storage voltage
Run them
Let them cool if using again
Charge them again
Run them again
Store them at storage voltage when finished for the day
3.85v / cell is roughly 50% capacity
Allthough discharge is not linear here is a handy table to remember (Resting voltage vs capacity)
4.2 - 100%
4.13 - 90%
4.06 - 80%
3.99 - 70%
3.92 - 60%
3.85 - 50%
3.78 - 40%
3.71 - 30%
3.64 - 20%
3.57 - 10%
3.5 - 0%
The storage value is arbitrary anywhere between 3.7 and 4.0v is fine in reality
Decent chargers will have a storage mode that leaves them at 3.85v / cell
Cheers
For longterm storage (months) - Ziplock style freezer bag in the fridge
As soon as a lipo is fully charged it starts to degrade, its internal resistance slowly rises over time and the effect is cumulative
Charge them from storage voltage
Run them
Let them cool if using again
Charge them again
Run them again
Store them at storage voltage when finished for the day
3.85v / cell is roughly 50% capacity
Allthough discharge is not linear here is a handy table to remember (Resting voltage vs capacity)
4.2 - 100%
4.13 - 90%
4.06 - 80%
3.99 - 70%
3.92 - 60%
3.85 - 50%
3.78 - 40%
3.71 - 30%
3.64 - 20%
3.57 - 10%
3.5 - 0%
The storage value is arbitrary anywhere between 3.7 and 4.0v is fine in reality
Decent chargers will have a storage mode that leaves them at 3.85v / cell
Cheers
01-15-2012 | 06:54 PM
#4
If keep at or below room temperature, you can store fully-charged lipo packs for quite some time (at least a month or so) without any issue. Knocking down the resting voltage is important if you're putting them away for a longer period of time, such as at the end of the season. If the packs will be stored at an elevated temperature, then discharging them to a lower storage voltage is much more critical to maintaining full pack capacity.
01-15-2012 | 07:15 PM
#5
Thread Starter
Tech Initiate
Joined: Jan 2012
Posts: 42
From: athens.ga.
i have 3 7.4v saddle packs. all 3 were charged this morning. i ran 2 of the 3 and those were put through the chargers storage mode witch leveled them at 7.60v . the 3rd pack i just put away for the night and can put through the storage charge tomorrow if i need to. do any of you know who sells a balance plug extension maybe a 6inch. or do i have to make my own. i am storing my packs outside in the shed in an un plugged small fridg, it is getting down to 30deg tonight but in the fridge i doubt it will be quit that cold
01-15-2012 | 08:02 PM
#6
Tech Adept
iTrader: (1)
Joined: Feb 2011
Posts: 244
From: Richmond Hill, ON, Canada
i have 3 7.4v saddle packs. all 3 were charged this morning. i ran 2 of the 3 and those were put through the chargers storage mode witch leveled them at 7.60v . the 3rd pack i just put away for the night and can put through the storage charge tomorrow if i need to. do any of you know who sells a balance plug extension maybe a 6inch. or do i have to make my own. i am storing my packs outside in the shed in an un plugged small fridg, it is getting down to 30deg tonight but in the fridge i doubt it will be quit that cold
http://www.hobbyking.com/hobbyking/s...idProduct=9735
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
