Lithium Batteries for RC Aircraft (Overview)

[RCGUY2512]

this helps alot thanks and probaly soon i will finish making ur extra 300 FOR MY 7TH GRADE PROJECT.

[jasmine2501]

@RcWorld7 I'm not sure what you mean - all I was saying is metal gears aren't everything, you still have to pick a servo with appropriate numbers. Within a given size range, there's a trade-off between speed and torque, but you can have more speed and more torque by going with a bigger servo. It's all relative - go look at the JR HV servo line - they are high speed and high torque, among the best available - they simply use more power to achieve an increase in both specs.

[NoobyRC]

I really really like RCpowers, of all the htings I need to know I always find the answers from him!

After crashing 10 planes I learned about torque roll and how to throw a plane correctly from this guy as well!

Thanks RCpowers I really appreciate the info!

[rcflight13]

So could I run my Hawk Sky on a 3 cell 11.1v 1000mAH? I think it uses 3 cell 11.1v 1800mAH as standard.

[porche3r]

where to hook up the battery on the reciever or on the ESC

[bibiricat]

hmmm.....so a 5000 mAh 2S 20C is good for a slow flier or a park-jet ?

[laithsrc]

if u r going to put a 5000 mah 2s batter you will need a 2 meter by 2 meter floaty plane

[baileythedudeman57]

where can i get the shirt send link

[baileythedudeman57]

nice shirt

[baileythedudeman57]

dave can you send me a link of those battery malfunctons if any and if not how did you do that got bunch spare

[blackcool77]

is a helicopter harder to fly or a plane

[hermitcrabstuff34]

i think there the same amount of effort to fly

[eskybeltcpflyer]

Hey Dave, I fly a belt cp and my 11.1 volt 1800 mah batterys get very hot after a flight if i fly aggresively or in idle up. Is that bad that they get that hot, i dont thunk it is, please reply

[e10unal]

Capacity: 2200mAh

Burst Rate : 20C

Continuous discharge rate: 15C

Voltage: 11.1V

Cells : 3

Size : 105mm x 35mm x 22mm

Weight: 160g

is this battery good for extra 300 ??

[0MoTheG]

you did not listen.

no. it is not good.

[samanthms123]

its exactly the same I use and its perfect !! :)

[edenwhw]

hey dave thanks for the vids, a question here, can i use a 11.1V 2200mAh 25C LiPo on a 25A ESC with 3800kv on my heli? which is originally using a 11.1V 1800mAh 20C, will it get burned?

[jickers2]

lituim is a solid element....where were you in chemitry?

[edenwhw]

yeah lithium is solid, lipo is lithium salt in solid polymer composite (at room temp). although dave's might not good in chemistry but he's really good in rc planes..lol

[RCpilotwantabe]

5,000th viewer!!

good show as always!

keep it up dave

[superhornt]

"do a barrel roll" is supposed to be from the Star fox games

[DiegoDLT]

where did you get that barrel roll shirt??

[p07gbar]

AMPS!! It's not voltage which is being taken from the battery it's amps.

[mark18352]

could you make a video saying all the parts and what battery use used for the first couple videos. (the one you can get planes for free) and if you could say an estimate how much it will cost.

[ampt9]

BEC = Battery Eliminator Circuit!!!!!!

which wires togeather with the ESC and connects with the flight battery to power the other electronics

A Voltage Regulator is what uses a seperate battery, that powers the other electronis

[RocketBurn11]

So a BEC is basically a capacitor...?

[omendesign]

nope...its a battery that powers just the servos.

[0MoTheG]

No, it is not but it has one in it.

[ernie5229]

I hate to say it Dave, but I agree with the guy who said your videos are leaning to "just for the money". I remember when I couldn't wait for Saturday mornings to see what you were up to. Now, not so much. Get back to focusing on PLANES!

[jasmine2501]

I am seeing this too - let's get back to the well-researched stuff. Please don't talk about things you aren't sure about. WRONG on servos dude! Speed and torque are important ratings - they tell you how fast the servo will react, and what kind of forces it can take without breaking! You won't strip gears if the servo torque is enough for the application. Speed and torque are the most important factors - been running nylon gears for years with no problems, because I get the right torque ratings!

[RCSuperPowers]

What Im talking about is crashes though, especially with the heavy loads of thrust vectoring which we do. The servo gears are the only weak spot in the chain and they always break for us in a crash, but we have special circumstance have the time. Metal gears have been servo savers for us cause they can take heavy crashes and not strip out.

[soupisgoodfood42]

How well do they hold up in terms of gear play after repeated crashes?

[slacker3442]

i also agree...

[cd8100]

lol I wonder if will ever Dave make a Boeing 747

[RichardWhelan82]

I enjoy your video's but I cant help but feel lateley its all about the money and you selling stuff :(

never the less its still informative and entertaining to watch.

keep it up.

[0MoTheG]

it is called: "making a living"

[crshbandit]

how long will a Lipo batt last if u charge it properlly and dont over amp it? how many cycles?

[jasmine2501]

Good quality batteries will last hundreds of cycles - I have Thunder Power batteries with over 200 cycles and no signs of stopping or losing power. Chinese cheapys will sometimes quit after 40-50 cycles.

[crshbandit]

BEC? Battery Emotions Controll. Batteries on Prozac!

[airlinerdude12]

lithium polymer inst a liquid, its actually a flaky substance. one cell is about 30 or more paper thin strips of lithium

[airlinerdude12]

listen, just charge the cells below or approximately at there voltage

ex. if it is 2000Mah charge at 2.0 2200 = 2.2

[bratonabike]

unless u hav really good blalcne charger in wich u just input the Mah and itll do it for u

[braaaapp]

BEC = Battery Elimination Circuit

[rctoywizard]

Your lucky. I have stripped out a couple but then again, I tend to be nuts with flying sometimes anyway.

The little servos, Hitec 55 & 56 & 65 tend to strip out if your aggresive or even crash from time to time. I know. lol

[fspacerc1]

metal gear servos are not all that. I' ve never stripped out a Futaba s3001 and Fly a lot of hight speed pattern and a little 3D. I think you were stripping servos because u bought cheap ass servos not because they had nylon gears.

[bowlingwithzombies]

im never going to use the stove again...

[mouselg]

LOL"The battery gets frustrated"

[cheeset6]

Are Lithium Batteries Li po batteries????

[dmbernasconi]

Yes, LiPo bateries are Lithium Polymer

[cheeset6]

Thank you!

[PLISKEN12]

one page e-book? maye2 or 3?

[MartySchrader]

Listen, guys: save yer own bad sefs a lot of time and wasted effort, not to mention money on burnt parts; just get the ebook. It's the best $13 I have ever spent in this hobby, and I have put about eight or ten grand into it in the last year. Seriously. Get the book. Stop wasting time.

[taofledermaus]

I thought the purpose of the BEC was to cut power to the motor so the last bits of power from a nearly-dead battery are dedicated to the servos so you can have control of the plane to land it.

[vanepico]

It is

Although li-po ESCs have throttle cut off for lipo cells

[vanepico]

The built in BECs in ESCs get the flight battery voltage then drop it down to 4.8v then put it out through the positive and negative wires on the ESC.

Dave refers to a seperate BEC which just helps to relieve the load on the ESC

[mouselg]

BEC does not have cut-off.BEC works until the battery has no current.

[1cemage]

batteries get mad?? lol

[nukebuilder]

Ya, I had no idea batteries were so emotional. I guess I'll be more careful when I'm around 'em from now on :)

[uselessmidget]

Battery Elimination Circuit

[retiredrider]

I bought the book when it first came out..Its great and worth the money.

[stltryn]

Fantastic information for us newbies. Thanks!!

[linkadrip]

The BEC High frequency Switching Circuit your refering to using for 8 servos just boost the amperage from the battery and still the battery will drain rather rapidly. At least from my experience's with them.

[linkadrip]

BEC is BAttery eliminator Circuit It eliminates the need to use an extra RX Battery. I would think Using A Bec After you have 8 Servos Lets say and a motor would be Useless your battery would go dead super fast. Instead after you have 8 servos you would then not use the BEC and use a seperate RX battery to power the servos and the lithium ion battery to power just the engine. That's my way of thinking the BEC is just to eliminate the extra weight of a seperate battery.

[DG121480]

Lithium is an alkali metal Dave.

[Gamah1991]

I like the "ONE THOUSAND" edited in at 4:28

[Skydive4ever]

:-) great job

[largefarge]

Dave, have you considered using a LVC (low-voltage cut-off) for your lithium batteries? It just cuts off power when the battery gets to a certain voltage. There not really expensive either, I think around 15-20 dollars and there pretty small.

[patellaman]

I really appreciate the Lithium tips!

[JoeFielding72]

You got me saving up for that book big time. I been watching videos and alone on them crashing there expensive planes. There are a lot of explosions and wires frying out. So I see the book is the best start to this hole thought of getting my very first plane. Since the first one I would like to have is like the big one you fly on Saturdays. I am a fan and I hope to be a hobbyist in the art of plane flying real soon. I hope you always share your knowledge you are the best Dave.God bless you.

[silverstreak328]

Get a ESC that has lipo low voltage cutoff!

[auburntaco]

I got the eBook last week. It's great.

[MePotatoe92]

Hey, well I just got a Wild Hawk for my birthday. I got the simulator I really like it. I charged my batteries and I was not able to fly it . My batteries have been sitting for a week. Is it ok if I fly it after that long. Also is it bad to over charge the batteries. Is there such a thing?

[JohnBohnam223]

You might want to try charging the battery for a few minutes. The battery probably hasn't lost much charge over the week. You simply want to charge it for a moment to heat up the battery before flying. It would be tough to overcharge the battery assuming it's not a Lipo. (I dont think the Wild Hawk is a lipo?)

[RacerLamboMurcie18]

no, wild hawk isnt a lipo

[RacerLamboMurcie18]

you cant overcharge the stock battery on a wildhawk, i do not know what happened, but i will tell you that you didnt overcharge the battery

[Tanner828]

wild hawks=good.when you set it up the best setup so you dont crash is to set those little metal wire things called control arms to the hole closest to the rudder and the other control arm farthest away for the elevator.This is good for when you first start out. whatever the instructions say for charging the battery is all the amount you should leave it in for.any more and you could discharge it and it will not have a good charge. your batteries can hold a charge for longer than a week.

[kapitanC]

love the last info on two rx. thanx dave.

[ecado]

Excellent info as always.

Do a barrel roll already. Gosh.

[helicopterkid1996]

I lost my trojan because of this. Ran down the battery low,ended up in a crash. Caught on fire.

[noxnflame]

by the way here is a tip for lipos if you ran your lipo down too much and your charger wont accept it try blowing on it with a little bit of hot air not too much so... theres a tip and it might not work but it worked for me

[noxnflame]

i use a 2800 mah lipo 11.1 on my slowstick

[z32upgrader]

that's insane

[f1adore]

dave if u put the gyros away from the centre of gravity will that made them more sensitive?the vtol is going to roll pitch and yaw at the centre of gravity if u move the gyros away from cofg they will sense more each degree of anglechange on the vtol right?

[jasleil]

I would buy tons of them batteries charge all of them up and have fun with them. HeHe I don't if that will work, but I know that I would need 2 spend a fortune to buy them batteries. Well as for the servo I will buy the metal gears. I don't want my plane to lose control all of sudden.

[xX1c3Xx]

great vid Dave. Do I have to care about LiPols if my speed controller has battery protection (voltage cutoff) function? I can set it to NiMHs or Lithiums, and it seems to slow down motor if the voltage drops. I believe that if speed controller lets motor to run, its not sucking too much power from battery to destroy it. I use the "super simple 18A" ESC from hobbycity

[dingo7222]

Hey Dave I was wondering how to take apart a Grayson Hobby Motor (specifically the one that come with the sukoi kit 2208-17) for rewinding it would be a great help.

[horizonflyer9]

2200mAh batteries aren't that big when you get used to them. the battery for one of my planes: a 3 cell 4450mAh 25C battery that I use on my Eflite Eratix, not that is pretty darn big! weighs about 10 oz. I even see some guys using 8 cell batteries at my flying field when they are using helicopters! those things are monsters.

[jlevandosky]

YES Dave we can hear you.

[jonasmajewski]

Hey Dave,

most speed controllers have a low voltage protection to cut off the motor when the battery reaches a certain voltage. I never set a timer for my models.

[flytheskatway]

oh dave one more thing if you use one servo for both alirons will that overwork the servo for a plastic gear?? on a plane like the extra 300??

[jonasmajewski]

it's ok. done that many times

[rcairpower]

Should be ok but 2 weeks ago a fellow club member of mine lost his plane doing that, prop first in the ground.

Stripped his gears for some reason. I have a Calmato trainer and it's fitted with four plastic gear servo's. I don't expect a problem with that.

[flytheskatway]

thanks dave i killed my very first airplane batary and its in my old electronic bin now so i have to buy a new one frome that same comany

[popcornreviews]

can you get collective pitch props for rc planes, so its kinda like a 6ch heli< that would be so cool!

[trxspirit]

yes, its called VPP

variable pitch prop

[rcairpower]

BEC Battery Eliminatry Cirquit (or something)

Didn't you mean a power box for the servo's?

[rcairpower]

BEC is used to avoid an extra battery for your receiver/servo's. The battery feeding the engine is now also feeding your receiver and servo's.

[42fba]

Anthropomorphic batteries scare me!

lol, "smoke our lithium"

[billyd44444]

GO JOB DAVE...VERY NICEEE

[joe0wnzu]

201 to watch whooop

[dragonspawnkilrr]

Man ive been watching these vids for like a month now and ive never had a rc heli or plane, but when ever i do get 1 ill know my shit!

[cheeset6]

this is off subject but, i like your shirt!!!!

[Gaidien]

Dave, stated that you use two recievers, two ESC's and two batteries?

How do you bind two recievers to your transmitter for one plane?

[HerraTohtori]

Logically I would have thought that the more thermal cycles (hot-cool) the batteries go through, the faster they die, but experimenting on it might be interesting...

Getting funding might be difficult though, as a good research would need to be done with two groups of equal LiH batteries with continuous discharge-recharge cycles until they simply die; one group charged immediately after discharge, then left to cool, another group left to cool down before discharge and after the charge.

[revmkell]

Hey do you ever take the time to sleep?? I injoy

your videos very much, one can never stop learning!

[ymanganelli]

Hi Dave, thats true about not letting the lithium batts to die, and also giving them a window of time for cooling down after recharging them back, specially because since the over heating let to a expanssion on the volume of the batts then all that presure and stress will lead into leak and for end explotion or smoke... anyways although this batts need some extra care they still top of the line for r/c world.

[stphndxtr]

My question is: How does the C rating (10C, 20C) measure into amps? If my motor is pulling 25amps, my ESC can handle 30amps continuous, what C rating is needed?

One more question; Is a 3cell 1000mah 20C going to have lower amp output then a 3cell 2000mah 20C? I heard the C was something to do with how fast the whole battery will discharge, so it would make sense if the battery had more mah and the same C, it would give more amps... Just wondering.

[rcairpower]

It depends on the capacity of the battery.

If you have a 2200 mAh battery a 10C discharge rate means you can pull 22A continually and probly 45A in bursts. (look at the battery)

A 25C discharge rate means you can pull 55A amps. (higher quality battery but more expensive than a 10C one)

Yes, the 2000 mAh one will have a double amount of amps discharge rate at 20C.

C stands for capacity in amps (2200 mA = 2.2 amps)

[SKOOTERTRASH74]

B.E.C.= battery eliminator control

[asbrown12479]

Thanks for the help Dave>>>>

[rj00001]

Could you use a solar cell on a plane?

or a psp battery?

(psp battery uses 3.5 at 1800 ma)

[dustinallen1982]

PSP is 3.9 at 1200 ma

[42fba]

I believe there are solar-glider hybrids, but solar panels are inefficient, so you can't use them for power-hungry things like helicopters and model jets.

[burtonrider316]

hey dave its raven01. can you go over chargers sometime? becuase there are way to many out there. so of course i want the best quality with the best deal. And also if you could go over power supplies? thanks dave great vid :)

[Free07Style]

Dave, for a 2 motor plane, why would you use 2 receivers? 2 ESC yes, but then I would connect them with a Y-cable to 1 receiver - or how do you bind and control 2 receivers with your DX6i?

[markos1388]

whats happening with the f 35?

[Free07Style]

If the plane slows down due to low voltage it's normally no problem because the ESC is powering down (normally programmable in 3 levels) early enough to fly it back with reduced power without damaging it

[jasser222]

love all your vids !!!!

I get a brushless skyartec cessna 182 soon

[sloshays]

Nice video!

[startazz]

Just as always Dave great video and the info was invaluable mate,5*

[dumbdums]

First!.