How does one know what is considered "safe" for a particular lipo? 34 amps for this 3S?
Watching *10 year old Videos!*
You guys NEED to do these tests on modern Batries
Very valid and useful.
Hello! I have an important question please Is it ok to use an AR Parrot Drone ( Turnigy 1300mah li-po high discharge battery ) for an airsoft gun when reconditioned? I mean is it compatible for use? Hoping for response thanks!
Theres people testing that lipo safe bag it doenst work its weight in money.
Don't we mention Nicads anymore?
Can you make a video of all the parts needed (Besides transmitter) to make an airplane fly with the cheapest items for each part?
BOM DIA TEM COMO LIGAR UM MOTOR DE IMPRESSORA EM UMA BATERIA DE LIPO 2.2 11V?
I charge in an ammo box if I flares up I will kick it shut.
Please, please get rid of Josh Scott. He is just annoying.
What power supply are you using for the Accucell? I have one and i'm unsure of which to buy. I'm currently using 18V 1.5A which produces a slow charge.
does Flight Test have any quadcopter for beginners like the rc planes for beginners series?
Can you please do a review on the syma x5c-1 thank you
Use the buddy code below for 7/11 to 7/25/15
replace the dot with a period.
Turnigy 4000mAH 20s 3s lipo pack for only $19.83, save ~$5
for a 3000mAh version use
I also have a wing camera code
KK2.1.5 flight control board
discharge a Lipo at that rate to that volts/cell, you are going to kill it in a few cycles. Especially Chinese lipos. But really, no Lipo will take that kind of punishment for long. You were reading at least 130F on the outside of the battery at the end of that run, which means that internally it was probably well beyond 140F. I guarantee that if you do that a couple more times that the battery will puff up like a dead fish.
Heat is what kills lipos, and in the last 10 to 20% of the capacity of a lipo, the internal resistance goes up substantially. If you are pulling high amps at that time, you are going to be generating a LOT of heat. If your LiPo is hot after a flight - you ARE killing it.
Best rule of thumb I have discovered over many years of flying with Lipos is to never discharge a battery under flight loads by more than 75% of it's stated capacity. Over time, you will have to adjust that downwards, because as they age, their internal resistance goes up and their useful capacity steadily goes down.
Lipos are at their best on their first cycle, and it's all downhill from there.
What voltage did you end the test at? I'm using these packs and I've not yet been able to get full capacity out of one yet, tho I never take them below 3.1v (per cell). I'm usually getting about 1150-1220mAh from the 3s 1.3Ah ones.
Also from the 3s 1.0's I have (Turnigy 25-30C's) I'm only geting at max 960mAh (usually more like 900-920). I notice this is several years old, do you think the quality of the turnigy cells has diminished some compared to back then?
And before you try to blame me / my methods- I'm using new packs that have been properly broken in. I'm an electrical engineer by trade and have a VERY good understanding of Li batteries of all types.
I'd never seen this video before and it's strange that this very pack 5 years ago was performing at well over 100% capacity but now days they dont even make it to 100% rated cap :( I've tested all my cells (over 2 dozen) and that's how they all are.
lmao I always get a good laugh when they have him on the set.
Why pronounce it "Lie-Poh", when it's short for "Lithium-Polymer" LiPo.
You don't say "Lietiuhm"
Also, wouldn't a lipo-bag be a bad thing while charging? - How can you monitor your battery while charging when you can't see it? I've had a 1S battery swell up to a ball while charging, but I would never have seen that in a bag. I just ripped it out of the charger and put it outside, no smoke, nothing happened.
Also, when you store multiple batteries in the same bag, wouldn't one catching fire ignite all the other ones?.
When I charge (Accucel 6 and IMAX B6) I always check if the battery is swelled up before charging, and continuously checking it while charging, and checking if charger or battery gets hot. I always charge at 1C.
Its like big Josh treats little Josh like a 6 year old, and little Josh respond accordingly. Nice video.thanks guys.
Right now the year is 2014 and you guys have come SO far from this old episode
I have had great luck with turnigy and zippys. Great packs at a great price.
13:34 - not creepy at all
So r those batteries good still
I'm getting them for my erevo
Dude use a chisel tip for heavy wires not that skimpy pencil tip! Other than that you seem to know your shit
Hey, great video, Im pushing 4s on my 1/8 RC Monster truck! If i was going higher to 6s I would go XT90! yes
Deans
Thanks for the vid. Do these heavy duty packs sag much ? or sag less than other packs ?
Check out this solder, specifically the mix ratio. Brian
Off topic
Can you tell me what your take is on lemon Rx stabilizer plus compared to a HH equivalent.
Thanks
I'm a tad bit sour right about now ☹️ I purchased on of them there fancy connector clamps for this solder job and you snatch a tape off the tool board complete with a stiff clip nicezzzz
Great power pack battery
XT60 is for 60amps and you are going to run two 30amp esc, very close to the limit.
You should measure the resistance as well
Wow they got the 5 and the 3 the wrong way round XD
Wow pretty big difference. Its not even just one pass either the HD were consistently faster.