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HomeRC & Power✈️Aircraft🚁Helicoptere-Electric Battery-Charger-pSupply › Newbie question: Battery or 12V Power Supply?
08-02-2007 01:17 AM  13 years ago
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Tsuper

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Canada West

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Newbie question: Battery or 12V Power Supply?
I just recieved a Trex 450SA as a anniversary gift. It came with the motor and esc. I have been flying a nitro Raptor 30.

My Newbie question is. I am looking for a charger but it looks like I will need either a 12v Car Battery or a Regulated power supply to power it. Which way should I go? Am I correct? How about at the flying field? Do I take the Car battery with me? What are the benefits of either way?

If I do go with the Car Battery then I will have to have a car charger for that too.(I do have one of those already). If I get the regulated power supply, what wattage do I need to get?

Thanks Tim
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08-02-2007 04:55 AM  13 years ago
biggame121

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OC, CA

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I currently use the TP1010C with the 210 balancer. I charge all my batteries with a pro peak 20A power supply at home and at the field if needed I use my car battery.
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08-02-2007 05:40 AM  13 years ago
smcbmw

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Louisville, Kentucky

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I use a triton jr with a power supply to charge my 3 cell batteries. Of course, most of my flying is done at home (2 acres). I have adapters in case I decide to fly somewhere else and I can hook it up to a car battery.10-8
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08-02-2007 06:08 AM  13 years ago
fergus

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Ireland

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20 amp power supply for the house and use your car battery at the field. A couple of charges of a three cell lipo should not hurt the car battery much. 1010C and balancer would be a great choice for charging.

Fergus
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08-06-2007 06:23 AM  13 years ago
zsultan

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USA

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Do you need to keep the car running while charging the 3S lipo batteries? I charge 2 at once with Accucycle Elite charger and put back around 1500mah in each battery.
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08-06-2007 07:10 AM  13 years ago
biggame121

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OC, CA

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You could probally get away with charging 4 but start your car after.
Oh and carry jumper cables
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08-20-2007 04:50 AM  13 years ago
Rchover1967

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Perth, WA, Australia

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Ha, ha, ha. That's funny. So how do you calculate the amp required from a 12V source?Puffs...goes the Lipo.
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08-20-2007 06:33 AM  13 years ago
Two Left Thumbs

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Houston, Texas - USA

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So how do you calculate the amp required from a 12V source?
Rough estimate, assuming 3s 2100 packs flown 75% will require ~1.5A to recharge. So if you have 3 packs to recharge, you will pull ~4.5A from your source battery, call it 5A.

The exact number will vary, but that is a good estimate to start with.
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