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Post by flyinghigh on Jan 22, 2008 23:18:08 GMT 1
I have an appache 2020 lipo charger that needs a 12 volt input. I've been using my car battery by just popping the hood and hooking it up. I'm too cheap to buy a seperate battery for inside. I was wondering, since the temperature around now is about 0* F, if the cold effects the lipo? I know that the temp effects nicd's somewhat, and they don't preform as well. Is this true with lipo's also? Is it ok to charge when it's so cold?
Thanks!
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Post by mrmugen on Jan 22, 2008 23:34:27 GMT 1
Cold is not the best for performance with lipo's until you draw them a bit to get them warmed up. I notice it every time I fly in the winter. I now usually keep them in my pocket or on the dash of the truck while flying to keep them warm. I would not think it is too good for them to charge in the cold either...but I am unsure. Ask these guy's. Someone over here will know for sure. www.nitrokillers.com/index.phpPower supplies can be had for real cheap for only a 2 amp draw. You might have one there and not even know it. It is simple to make one out of a power supply for things like a keyboard, type writer, calculator.... I will take a pic of one I made a while back. Kevin |
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Post by flydiver on Jan 23, 2008 2:52:40 GMT 1
Be CAREFUL with very cold charging lipos. It's NOT the charging. The trouble starts if you bring a cold fully charged lipo to room temperature >>>>NOW it's potentially OVERCHARGED!!!
You've heard of the consequences of overcharged lipo, yes?
The FMA Cellpro charger (best lipo charger I know) will not fully charge a lipo if the temp is below 50 degrees F.
fly
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Post by flyinghigh on Jan 23, 2008 23:59:33 GMT 1
Thanks for the cautions guys. I'd like to see that pic of your power supply mrmugen too.
Thanks.
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theriaa
Flight lieutenant
Posts: 89
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Post by theriaa on Jan 24, 2008 6:40:26 GMT 1
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Post by flyinghigh on Jan 25, 2008 0:40:32 GMT 1
The closest transformer I could find was 14.5 v and 4.5 amps. What are the limitations on the amps for the imput? I know the voltage is 10.5-15v.
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Post by flyinghigh on Feb 2, 2008 2:48:59 GMT 1
Bump...
I got my lipo today! I want to charge it so I can fly it tomarrow. I want to know if I can use the above transformer. It's 14.5v and 4.5amps.
Is 14.5v too close to 15? The charge reccomends 10v-15v
Is there a limitation on the amps? Is 4.5 too much, or ok?
Thanks!
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Post by cjg on Feb 2, 2008 4:30:36 GMT 1
Too many amps on a power supply for the charger is ok. The charger will only draw what it needs. You don't want a power supply that provides to few amps for the charger.
If the charger is rated 10-15v, and your power supply is 14.5v you should be ok.
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