Basic Electronics Question.

This is very simple and i'm sure i correct. I just need verification.

I have recently purchased a toy RC helicopter.
http://www.thinkgeek.com/geektoys/rc/cb6c/

OK question first then i'll go into detail.

If i connect a pair of batteries in parallel that will give me double the run time correct?

Within the first night of owning the helicopter the bearing that one of the rotters rides on seized up. Thus causing the control board to burn out. So i found a site online that carries the same copter and sells parts for it. I went ahead and ordered a whole new copter. Just the copter and not all the extras like the transmitter. The battery on the first copter is still good so i figure i could add it to the new one and get more flight time out of it. The added weight of the extra battery will be minimal. At worst my maximum flight height will drop a little. But having more then a 5 minute flight time will be worth it.

Here is the site i found with the spare parts.
http://www.esky-heli.com/sanhuan-copter-60201-maxz-swift-3ch-rc-helicopter-rtf-w-gyro-green-p-7397.html

The model shown there is slightly different then what i have. But the best i can tell they are the same helicopter. So hopefully my controller will work with it. My controller has 3 channel settings so i think i'll be fine.

2 batteries in parallel should give you twice the capacity, whether that translates into twice the flight time is another matter because of the extra weight it needs to lift.

Well even a couple of minutes more will be good.

It seams the new helicopter will have a 130mAh battery while my old one has a 150mAh battery. I'm sure the 20mAh difference is marginal but it may be enough to make up for the added weight. Either way i will have a longer flight time on it.

Looks like i found myself a new hobby. Now to save up a couple hundred $ to get a real RC helicopter.

Now to save up a couple hundred $ to get a real RC helicopter.

I used to race RC cars, still have a screamer of a electric model (got rid of the gas ones when I moved out of the parents house 10+ years ago) and I know how much 1 little slipup can cost on those

a plane or a helicopter on the other hand, yea takes some guts

Yes its not the cheapest hobby to have. But once i flew that little toy one i was hooked. My dad's best friend builds and flies model planes. I may just keep things fairly simple and stick with the Coaxial helicopters. Sure i won't be able to do all the cool stunts like the single rotters can but its a good start.

From what i've been reading it seams this is the one to get for learning helicopters.
http://www.bladehelis.com/Products/Default.aspx?ProdId=EFLH1400

But thats way outside my range so i'll probably be going with this one first. It will be a while before i move to outdoor flight and the big $ birds and parts.
http://www.bladehelis.com/Products/Default.aspx?ProdId=EFLH2200

those are fine looking rc's but yea I would go with the dual first as they are reportedly much easier to get the basics down with

My brother has gotten into RC helis. He just bought a $150 Heli that weighs less than 1 ounce, and looks pretty similar to that one.

It's a pretty zippy little thing! It's definitely fun to fly. I'll try to find you a link..

I started on indoor R/C helis two Christmas ago:

http://www.e-fliterc.com/Products/Default.aspx?ProdID=EFLH2200

This one is very easy to learn on, anyone can get proficient in just a few days. As small as it is with so little mass it is very difficult to break anything. Unlike many store models, this one does have replacement parts, so if you do break a blade or something you can get parts. I broke a few things the first week and then nothing else for the next year.

Last Christmas I got this single rotor model. It flies a lot faster and you have to have a little flight time under your belt as indoor flying does not allow much reaction time when your clipping along:

http://www.bladehelis.com/Products/Default.aspx?ProdId=EFLH3080

This one is suppose to be able to fly outdoors where the first does not handle even the lightest breezes at all.

These things are an absolute blast and it's amazing the tech they can pack into a 1 once flight package.

Lefty

Last Christmas I got this single rotor model. It flies a lot faster and you have to have a little flight time under your belt as indoor flying does not allow much reaction time when your clipping along:

http://www.bladehelis.com/Products/Default.aspx?ProdId=EFLH3080

Hey that's the one I was just talking about my brother getting. He broke some kind of blade retention thingy or something, but he ordered some parts and they should get here tomorrow. It's quite fun to fly!

Thats the one i'm looking to get. It may be my Christmas present this year. Fortunately i have a nice hobby store about 10 minutes away that caries them and all the replacement parts.

It seams the new helicopter will have a 130mAh battery while my old one has a 150mAh battery. I'm sure the 20mAh difference is marginal but it may be enough to make up for the added weight. Either way i will have a longer flight time on it.

So you are planning to parallel two mis-matched lithium packs? Read the safety notes... Sounds like a way to cause a fire to me.

Connecting two batteries in parallel is tricky. If they are charged at the same level everything is fine. But if one is not charged and the other is, this is not a really good idea. It will drain one battery very fast and charge the other very fast as well. This might get them very hot and destroy or damage the batteries (and maybe even start a fire if you are very unlucky).

Then i guess i'll just trade out the battery so i'm running on the 150mAh.

Got the controller board working again. Problem seamed to be the power switch. But now it wont turn off which seams to be the least of its problems right now. If i get the 2 rotor motors going at about 25% the motors stop and the power light on the board starts blinking at me. The tail motor has no problems. Anything to do with the main rotor motors and be board errors out. Everything on the board is SMD so i have no way of troubleshooting it and possibly replacing the bad part. Not that its a big deal with the new copter on the way. The new one shipped on Monday directly from Hong Kong. It also seam like the board won't charge the battery anymore either.