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Old Jun 03, 2005, 11:27 AM
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burr ridge illinois
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110 Volt Lipo charger--HELP!

I want to travel with a small plane and need a small Lipo charger that can run on 110 Volts instead of the usual 12 Volts. It would be to charge 3s 860-1320 packs.

I'm hoping for something like a wall charger in terms of size (small, like the chargers we get for our radios).

It'd also be nice if I could adjust the current, with a knob or switch (nothing fancy).

I didn't come up with anything good searching.

Any suggestions?

Thanks!

Eric
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Old Jun 03, 2005, 11:37 AM
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mexico's Avatar
NJ
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I have never seen anything like that. I assume it is because it would not be able to provide the regulated power needed. If you are driving you could simply run your charger off your car's battery. If you are flying do you plan on renting a car? Otherwise you will probably have to bring your power supply.
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Old Jun 03, 2005, 01:24 PM
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burr ridge illinois
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Lugging the power supply is exactly what I was hoping to avoid.

I'm surprised there aren't more 110V-input chargers. I'll bet a significant amount of Lipo charging occurs at home, where the power supply is just a extra thing to worry about.

I made a 22"X14"X9" coroplast box (the limit for carry-on) that holds radio, lipos, charger, and plane, but will not hold my power supply. I could carry it in the clothing suitcase, but the idea was to have a completely self-contained "kit".

Anybody?
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Old Jun 03, 2005, 01:31 PM
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Sterling Heights, Michigan, United States
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If it's a small plane, you can use a wall transformer that can put out 1.5 amps. and use one of the lm317 li-po circuits found in one of the DIY lipo threads. This would give you about a 1-2 hour charge rate. I've been using the circuit and find it quite reliable, even made a pcb board for it.
http://www.rcgroups.com/forums/showt...26#post2822523

Kin

http://www.embeddedtronics.com/
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Old Jun 03, 2005, 02:23 PM
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United States, WA, Puyallup
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kfong's idea is good. But if you are not into DIY, how about a small (4.5" x 2.5" x 1.5") switching PS from Mouser. 12 V and 30 watts ought to take care of the batteries you are carrying.
Mouser Electronics
Bill
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Old Jun 03, 2005, 04:01 PM
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Newport, NC
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I believe balsa products has wall-wart lipo chargers available. But if you only want a power supply, anyone of the online surplus electronics stores has small 12V switching power supplies that are very slim and lightweight.

http://www.mpja.com/productview.asp?product=15548+PS
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Old Jun 03, 2005, 04:12 PM
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Houston, TX
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This will work for your 1000mAh and above 3s lipos. You should be able for find one that charges 800mA also.

http://www.balsapr.com/common/keywor...21558162005765
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Old Jun 03, 2005, 05:06 PM
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burr ridge illinois
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That last one's pretty close to what I'm looking for, although it will be charging my 860s at >1C (not by much, though...)
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Old Jun 03, 2005, 05:16 PM
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Quote:
Originally Posted by echassin
That last one's pretty close to what I'm looking for, although it will be charging my 860s at >1C (not by much, though...)
Yes, that's why I recommend looking for one around a 800-900mA charge rate. Then it will just charge your 1300s slower.
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Old Jun 04, 2005, 12:17 AM
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You need to buy a charger like the thunderpower 425, or kokam one, that can go up to 4 cells, then buy something like a laptop powersupply, get something say 12v, 3amps, and then just slow charge your packs, and you'll be golden.

r
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Old Jun 06, 2005, 05:04 PM
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burr ridge illinois
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(The whole idea is to avoid the power supply)
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Old Jun 06, 2005, 05:13 PM
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well, I there is always going to be a powersupply, it just may be built into the charger or not. you're best bet is a small little unit, and just make a neat little package with it and the charger.

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