Bought a new electric model airplane with a 2400 3 cell 11.1 mAh battery and bought 2 extra batterys from a different dealer that are 3300 3 cell 11.1 mAh . I'm using the stock charger that came with the RTF airplane (182 cessna ).What i'm wondering about is the charging plug on the spare batterys.On the battery that came with the airplane....the wires are..(red..yellow...blue...black ) and on the spare batterys with the connector being (red...blue...yellow...black ).

The two center wire colors are reversed..........

Anyone have an idea on weither this will make a difference on hooking up to my charger ??



BIGMIG

That's a balance plug, not a charging plug. Wire colors are not universal, so it's entirely possible that two different manufacturers would use different colors for the same thing. If the plugs are the same type you should be fine.

Now here's the bad news. If you plane was designed to fly well with a 2400, it's liable to be too heavy with a 3300. Even if it will tolerate the extra weight, its balance will change with the added weight of the higher capacity battery, which throws off all of your flight trimming and will change the way the plane handles substantially. You'll be better off taking those 3300's back and getting more 2400's. It's ok if you change brands as long as all your batteries weight the same.

Thanks for the reply.

We flew the plane today on its maiden two flights.Was allmost to windy to fly,and i did not fly it as i don't like wind with these light planes.Had my nephew fly it for me as he is a good flyier.He is into airplanes and helicopters (electric ) and i took the spare batterys along for him to look over.He didn't think the center two wires being reversed would make any difference but suggested to make sure it might be a good idea to post that question here.

I bought the batterys from hong kong so they won't be going back (may get traded with someone if they tend to be to heavy for the model ) I need to weigh them to see what the actual weight difference is......they are for sure more weight.We need to try one in the model to see how it handles it if when in the model the balance is right.It would have not been a good day today for this test as it was kind of windy,and the battery connectors need to be changed to match the one in the plane.we were a little pressed for time also today so this will be something i'll disscuss with him at another time.

May well be i'll need to stick with the size that came with the airplane kit.

BIGMIG

I'm new to electric flying and "Lipo " batteries.I know they call them a balance pug.......but thats what my charger plugs into to charge the bettery (balance charger ).........so i thought it would be called the charging plug......??

BIGMIG

If you plan to fly electric powered planes, buying a multimeter is almost a MUST HAVE. You can then easily check out polarity, voltage, current and resistance on most items. Almost all (all I have ever seen) balance plugs are just a terminal for each cell connection, always one end is the most negative terminal and the other end the most positive terminal. Nearly all have the most positive terminal as a red wire, and the most negative terminal a black wire with no particular color order for those in the center pins but all are just in series with the first pin above the outside black lead being 1 cell more positive than the outside black lead and progressing up the chain of cells.

The biggest issue with the battery weight is the way it will change the balance of the plane. Unless the battery is located exactly on the center of gravity, you're going to wind up shifting the CG when you change batteries. If you don't add weight on the other end to bring it back into balance, you'll find that your flight characteristics change a lot as will your elevator trim.

The plug is always called a balance plug on lipo or life batteries. It's true some chargers charge through the balance plug, but it's still called that to differentiate it from the main connector coming from the battery.

Congrats on the first flight. I'm glad it went well and that you have someone to help you in the initial phase of learning to fly. The hobby is an absolute blast once you get into it.