I know they put out like nearly no power when cold. We discussed all this not long ago, maybe I can find a link. Guys who fly in cold climates have to put their packs under the heater to even use them.
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Or better yet...
Put you Lipoly in your pants pocket to keep it warm next to skin, then drop your keys in the pocket with it. That should keep the pack quite warm!! :shock:
Joking aside, if you keep the pack in a pocket where it's fairly warm you will be fine. Once it's in the plane and being used the amp draw should keep it warm. If that doesn't do it, or it's really that cold you can wrap it in that foam paper stuff and that will insulate it.
Put you Lipoly in your pants pocket to keep it warm next to skin, then drop your keys in the pocket with it. That should keep the pack quite warm!! :shock:
Joking aside, if you keep the pack in a pocket where it's fairly warm you will be fine. Once it's in the plane and being used the amp draw should keep it warm. If that doesn't do it, or it's really that cold you can wrap it in that foam paper stuff and that will insulate it.
I have proof that lipos do not like the cold. The winter has already set in here as well. I fly a lot in the winter but you do have to take some precautions. I take my plane indoors then just step outside to fly. The times are a little shorter but I have done that all the way down to -20F. (Once your fingers freeze it's no more fun )
If taking your plane or batteries is not an option you can also use those charcoal hand warmers. On your lunch break put your batteries on a hand warmer and put a small blanket on top of that.
)If taking your plane or batteries is not an option you can also use those charcoal hand warmers. On your lunch break put your batteries on a hand warmer and put a small blanket on top of that.
Well, maybe 29 degrees wasn't the problem. Later last night I decided to thaw stuff out, and went to get the NiMh out of the tx, and found a melted on back plate on my tx. I don't know what caused it, but the shrink wrap on the pack was shattered, the tx case itself was melted (welded) shut. Some point between flying the Yak on Friday afternoon and trying to take the pack out late on Friday night the cells had a problem. The 8 cell pack was reading 5.6 volts on the meter, and near room temp.
I replaced the pack, and the tx seems to work, but the old cells are obviously destroyed. Maybe NiMh doesn't like the quick charger? I figured I'd top it off, and ran a charge cycle at a low setting, like 0.2 amps. That is all the way down on this charger. This is a 1200 mah NiMh pack. I guess a few years on the quick charger took it's toll. I have no clue how long it has been since I looked at the pack to have possible realized any sooner that there was a problem.
I guess I'm lucky the thing works at all.
Maybe a 6102 is in my future before the Kat 70.
I replaced the pack, and the tx seems to work, but the old cells are obviously destroyed. Maybe NiMh doesn't like the quick charger? I figured I'd top it off, and ran a charge cycle at a low setting, like 0.2 amps. That is all the way down on this charger. This is a 1200 mah NiMh pack. I guess a few years on the quick charger took it's toll. I have no clue how long it has been since I looked at the pack to have possible realized any sooner that there was a problem.
I guess I'm lucky the thing works at all.
Maybe a 6102 is in my future before the Kat 70.
No I love my 8103 though....bought it used (6mo old digi trims) for 200 bucks....it inluded two Jr recievers ( one 8 one 7 channel I believe) , and a aluminum carry case. Case is worth 50 bucks the recievers about 150 so I figure I got the radio free.
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