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08-02-2007 10:22 PM  13 years ago
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kaz172

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auburn, WA -usa.

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Battery and charger for hopped up cp pro question
Does anyone know what would be a good battery for a cpp w/ park 370 brushless main and dd tail possibly brushless later on. I've heard some people using the tp 730 or 1320 by thunder power does that mean my stock 800 has more power than the 730 or is the thunder power brand that much better, also would the 1320 be to heavy or run the motors to long. If I switch to the different brand do I have to also buy an expensive charger are they that much better. thanks
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08-02-2007 11:11 PM  13 years ago
fenderstrat

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Aston,Pa

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the battery you choose depends on how you want to fly...all of the batteries you mentioned put out roughly the same power 11.1V. the maH rating is the duration or how long it will run....so a 730maH batt and a 1350 maH put out the same power but the 1350 will run ALMOST twice as long under the same load....people doing acrobatics want less weight so they go with less maH(weight)and the trade off is runtime...most people hovering and sport flying are willing to trade the extra weight for longer runtime.....if you are going to spend the money for top of the line batteries, a quality charger is HIGHLY recommended, it will definately increase performance and battery life....the stock e-flite chargers are marginal at best and give you almost no info about the batt or charging......there are many good chargers out there,...I personally use the CELLPRO4 from FMA it is an awesome little charger(lipo only)that tells you all of the important charging info you will need and it's only$65.00Compass helis Support Team
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08-03-2007 02:54 AM  13 years ago
tutelar-rc

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Nobleton, Ontario - Canada

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An important item to keep in mind when you buy a new battery is the maximum discharge rate. This tells you how much current can be pulled from the battery without damaging it.

The E-Flite stock li-po battery is 10C continuous, 12.5C burst discharge.

I find with a brushless main, and brushless tail that I am pushing the limits of the E-Flite stock li-po battery (extreme heat).

I now use the TP-1320 Pro Lite batteries for my brushless setup - 14 to 15 minute flight times, and the battery does not get hot.

The TP-1320 Pro Lite is 13C continuous, 20C burst discharge.
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08-03-2007 04:11 AM  13 years ago
kaz172

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auburn, WA -usa.

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Thanks guys, hey tutelar-rc do you use a different charger I know there are better chargers then the stock eflite but is it worth the money, it seems like everything adds up so quickly with all the crashing and hopups.
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08-03-2007 04:25 PM  13 years ago
tutelar-rc

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Nobleton, Ontario - Canada

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You certainly make a good comment regarding how everything adds up.

In my case, I am now totally sold on electric, so will continue to buy battery powered models. So I made an investment in my future hobby needs. I now own a Thunder Power TP-1010C charger and a Thunder Power TP-210V-Balancer - about a $300 investment .
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08-03-2007 05:13 PM  13 years ago
kaz172

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auburn, WA -usa.

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Sounds like a worthy investment like you I am also sold on electric heli's (gas powered seems just to big for fun around house). The charger you mentioned needs a balancer also? And does it charge the batteries better and faster? Will the elite stock charger do about the same for charging thunderpower batteries, maybe just takes longer? Sounds like thunderpower batts are the way to go. Seems to get alot of use by the extreme pilots.
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08-03-2007 05:36 PM  13 years ago
tryan02

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Canton, Missouri

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the E-flite charger uses a passive ballance system when one cell reaches a charge it puts a shunt across it and feeds the others till they reach voltage. Your high end chargers do the same thing but actively, they will actively look at each cell durring charge. For what it is the E-flite charger is a very nice simple balance charger. But you'll notice e-flites charger has a input of 1 amp from the wall charger .8 amp output to pack so it is much slower charging. It is almost as good as a high end charger just less frills. It would take a degree in chemistry to prove that the lithium polymer was being damaged more by the E-flite than a high end charger. That being said I'm gonna go with the cellpro 4s pretty soon, right amount of frills on a reasonably priced active balanced charger.No Really I am the club President!!!
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08-04-2007 03:46 PM  13 years ago
tutelar-rc

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Nobleton, Ontario - Canada

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The TP1010C charger does not need a balancer to charge - but then it is NOT balance charging...

I bought the TP Balancer it for 2 reasons:
1. my stock E-Flite "balance" charger was not keeping my E-flite batteries well balanced (I would measure each cell with a voltmeter)
2. I was buying more expensive batteries and wanted to protect my investment.

I then purchased the TP1010C charger, since it will communicate with the balancer during charging.

I find find that the TP1010C charger and TP210V balancer, although expensive, are very capable - imbalance in all my packs is now less than 0.01V.

There are a couple of really good videos on the use of the TP1010C and TP210V somewhere. I viewed them before purchasing, but cannot find them anymore...
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