Having problems with my Lipos. Can anybody tell me if they are bad.
10-14-2010, 06:46 PM
#1
Having problems with my Lipos. Can anybody tell me if they are bad.
I have some Turnigy 5200 2s lipos that were great up until I left them out in the back of the truck one night and it got down to about 36 degrees. Ever since then they both shut the ESC completely off(not low voltage flash). The charger says they are peaked but I get about 5-10 seconds and it shuts down completely. Before when they got low after running the truck the ESC would flash letting know low voltage had kicked in. I wouldn't think one night at 36 degrees would ruin them but its looking that way. Any ideas? Does lower temps hurt them that much?
10-14-2010, 07:00 PM
#3
Tech Rookie
If you're running them at that temperature (I'm guessing Fahrenheit here), you want to warm them up before running them. When they're done, charge them up indoors at room temperature. Lipos can't charge to their full capacity when they're in the cold.
If you do try and charge them at normal rates in the cold, the cells will be damaged significantly.
If you do try and charge them at normal rates in the cold, the cells will be damaged significantly.
10-14-2010, 07:54 PM
#4
If you're running them at that temperature (I'm guessing Fahrenheit here), you want to warm them up before running them. When they're done, charge them up indoors at room temperature. Lipos can't charge to their full capacity when they're in the cold.
If you do try and charge them at normal rates in the cold, the cells will be damaged significantly.
If you do try and charge them at normal rates in the cold, the cells will be damaged significantly.
10-14-2010, 08:06 PM
#5
Tech Addict
iTrader: (3)
Sounds like they are shot to me, ....sounds bad but a night in 36deg temp's is pretty cold. Plus Turnigy is not known for being the highest quality battery.
You may try to warm them in a heating blanket then check the voltage, ..... or try to balance them at that point.
You may try to warm them in a heating blanket then check the voltage, ..... or try to balance them at that point.
10-14-2010, 08:18 PM
#7
Sounds like they are shot to me, ....sounds bad but a night in 36deg temp's is pretty cold. Plus Turnigy is not known for being the highest quality battery.
You may try to warm them in a heating blanket then check the voltage, ..... or try to balance them at that point.
You may try to warm them in a heating blanket then check the voltage, ..... or try to balance them at that point.
10-15-2010, 08:14 AM
#9
I've been storing the lipos I don't use in a refrigerator for a while now, its ~40F. I let them sit a full 24hrs in a heated room before I do anything with them. They work like they're brand new.
If you didn't let them warm up and the lipo media was still pretty cold when you charged them, that could explain why they've gone bad.
If you didn't let them warm up and the lipo media was still pretty cold when you charged them, that could explain why they've gone bad.
10-15-2010, 01:27 PM
#11
One of the local heli fliers told me that lipos only have 70-80 capacity when they're cold. If they get near freezing while fully charged, you've essentially overcharged them by 20%. That's bad news for Cody.
Cold storage is fine if you have them at 60% 'storage'charge when you chill them
Cold storage is fine if you have them at 60% 'storage'charge when you chill them
10-15-2010, 01:43 PM
#12
Tech Addict
iTrader: (3)
One of the local heli fliers told me that lipos only have 70-80 capacity when they're cold. If they get near freezing while fully charged, you've essentially overcharged them by 20%. That's bad news for Cody.
Correct 100% they are over charged by at least 20% or more,
Cold storage is fine if you have them at 60% 'storage'charge when you chill them
Correct 100% they are over charged by at least 20% or more,
Cold storage is fine if you have them at 60% 'storage'charge when you chill them
