hey just wanted to know what it says in the topic, can i use a lipo as a reciver pack in a plane ? ofcourse with a regulator.
what are the pros and cons of that ?

Thanks
Yousef

Come on now Yogy, you gotta know the "Cons" !! Just one big one comes to mind How about... Let's see.... FIRE !![X(] Whats your plane worth to you? Is it worth the risk ?
Good Luck,
Ugo
I just re-read what I' d written and it sounds kinda smartass on my part Yogy. Then I realized you were a"Beginner" and maybe you really didn't know the sensitivities of the Lipos....Anyway, now you know, and I'm sorry if I offended !!
Ugo

You have to be kidding???
Yes lipos can catch fire but not unless damaged or sometimes if charged too fast but certainly not during normal flight.
If that was the case those of us flying electric planes and helis would be in sad shape.
The drawbacks to lipo is higher cost with no real advantage over a good Nicad or Nimh. Yes you may save a little weight but do you really need to?

I never meant ( and shoulda said) that the lipos would catch fire in the air !! My Bad !
Ugo

For powering recievers, lipos aren't worth it for the little weight savings you might get.

It takes two Lipos and you need a charger than will charge them independently. They usually only catch fire if being charged wrong.

They could be removed from the plane for charging?

Like was said above, the extra cost and complexity would eat up any advantage.

Lipos are only as dangerous as the user. I have thousands of cycles through my lipos and have never had any fires, in the air or on the ground. They do wear-out though, after about 500 cycles, you may have them puff-up or lose much of their capacity.

It's true, however, that the advantages you may gain such as weight, capacity and discharge rate are not worth the hassle, IMHO. I run lithium Ions in all of my planes. They're cheaper than lipos, more stable and idiot-proof than lipos and they offer similar capacity and weight savings.

Any 2-cell lipo, and depending on the reg, any 3-cell lipo will be just fine. You do not need to charge the cells individually, and balancing is a tad overrated. Balance them once every 50-100 cycles and you're fine. A 2 cell lipo runs at 7.4V, a 3 ceel runs at 11.1V. You just need a reg that can handle the drop.

Good luck!!

2-cell LiPo batteries are fairly inexpensive and very light weight. They allow you to run your receiver and servos at 6v (with a regulator) at a considerable weight savings versus a comparable NiCd or NiMH pack. LiPo batteries also have a much lower rate of self-discharge when compared to NiMH batteries.

It would be a simple matter to fly a typical .40 to .60 sized sport plane with a 2200Mah 7.4v LiPo for a receiver battery and enjoy several benefits. The LiPo battery would provide maximum torque and speed from the servos when used with a 6v voltage regulator without adding weight to the plane. It would also allow you to fly ten or twelve flights without needing to recharge instead of the typical 3 or 4 flights you'd get out of a 600Mah NiCd receiver battery. You could also charge your plane and put it away, then be assured that the battery is still fully charged the next week when you pulled it out to go flying.

I think LiPo-powered receivers will be more and more common as prices continue to improve. The average sport pilot may not need the power and longevity that LiPos provide, but I'd think most pattern or IMAC pilots would jump at the new technology. The pattern pilots at my club practice and practice and practice all the time; for that kind of flying, the extended run time that LiPos can provide for high current servos is simply one less thing to have to worry about. Being able to provide extended servo power while maintaining or even reducing weight is simply an added bonus.

The problems with lipos is not that they are going to blow up when flying but that they are very sensitive to vibrations. Also, a voltage regulator to get the voltage down is just one more thing to fail.

The LiPo's cost a little more than a Nickel-Metal-Hydride
You would need two of these plus a regulator . . . .

LP604374P4HHR 3.7v 1600mAh 74mm L x 43mm W x 6.0mm thick
2.91"L x 1.69"W x 0.236" thick 40 gms (1.41 oz) 16.0 Amps maximum $15.95 ea (From Batteries America)

Thanks for the information guys

Yousef