Finally someone who stresses to not solder lion. Well done !

Today I made my first 4s 21700 ion pack. Some tips for beginners to avoid mistakes: always double check every connection you make, read and understand the wiring diagram of your pack first! Good luck! Spot welder recommended.

Thanks for this, I have a ton of 18650s laying around and have been toying around with the idea of making one of these.

I just received the 21700 4s from Fpvcycle and I flew my Shendrones squirt 2203 3450kv for 13min with a gopro and the voltage at landing was around 3.2 per cell. I was freaking shocked.

I've been building 3S Li-ion packs out of Sony VTC6 cells, they work very well with the Explorer. Yes, you have a slight performance loss due to it being a 3S pack, but flight time remains the same. I buy them for $5.99 a piece.

Just saw this video. Bought some molicels myself last week. Bought fish paper along with and a mid range low end spot welder. That kweld was just too expensive. Went with .20 8mm pure nickel strips. Hope mine turn out well too! I have all the balance leads and wire I think I will need. I am looking to build 3s and 4s cells. I went with 85mm pvc heat shrink for 3s and 120mm for 4s. Guess we shall see how that works out

Thanks for this. I’m trying to build a 4s 18650 Li-ion battery pack for a PAPR fan unit. The real deal costs $1000 which is why I’m going DIY. Your video is very helpful

30Q and VTC 6 have Petty much the same discharge. The 30Qs 15A are continuous and the vtc 6s 30A are burst only. Realistically they both can deliver 20A continuous on drones. The best cell however is the P42A since they have even better power to weight than all the 18650.

That looks like fun I guess because I like doing things like that. My problem, have no use for any right now, but thanks Dan I feel smarter now.

This reminds me of the days when i used to make my own 6 cell NiMh packs for my rc cars, only that this is a bit more dangerous with the lithium cells.

You could also weld the nickel strips to the battery and then solder to the nickel strips

you have a voice for radio. Nice presentation

Nicely done my friend no BS about it that was pretty cool thanks

i NEED TO GET YOU TO MAKE ME A 6SVERSION FOR MY 6S QUAD ....OMG THAT WOULD BE AMAZING

Thanks! Been wanting to try one of these

the zhod 4s1p cost me 70 canadian but its pretty great on the explorer thanks tweet

Very nice show, thank you. Currently, I'm also getting a background on properly building packs myself, as it's not readily available in my area and ordering is a headache with land\sea delivery more than a month waiting times.. My concern is nickel strip you've used - matching standard is SSPN-0013 if that's pure nickel (0.2x8mm). Now this strip have max 9-12Amps rating for a single layer. If you want like 30th Amps currents you'll need at least 3 layers, which is still fine and acceptable, just need to weld 3 strips for each bridge on top of each other... But my concern is overheating - we all know how much current 4S quad could theoretically draw on freestyle active flying. For example, testing single 0.1 by 4mm strip with 15A current it'll heat up to +55C, at 30A it's about +500C (Nickel melting point is 1455C or 2651F and for 0.2by8mm strip it will be a bit different) as for the batteries - they normally take up to +60C temp (charging, rapid discharging as per specs sheets) - obviously depending on the battery model. Second point - voltage sag for Li-Ion - for example top quality packs on MOLICEL P26A cells as you mentioned could theoretically provide up to 35A, but as per testing it will immediately sag to 3.43V during such current draw... which suxx... Any ideas on that?

You made my Google Hub answer.... and it gave me the answer before yours. LOL!

Thank you! thank you!

Made my day at 15:35

if youre doing pack do it right, with cells holders

I would love to see how you go at charging it? and how to use the right charger.

I have a very new rigid tool battery that has one bad cell. I might make one from those

This is quality content, it's organized well with chapters, easy to understand, and enjoyable to watch. Great job. 👍

Did you test flight? I can't seem to find such video on your channel

is it considered a 2s if you 'extend' a 2s pack with another 2s pack? (all same batteries)

Great video! Any experience on the thickness of the welding-stripes? Only have a cheap welder which can only go to max 0.15mm. Will 0.15x7mm be enough to drive ~8-12 amps?

Can you build a Halo pro drone's battery for me? I'll send you the battery so that you may use the correct dimensions.

Thinking 21700 4000mah 35a .. 6S might weight 475g .. thin kthey have higher mah if I search harder

can i try makin this same on 10A rated 18650 cell, like 1s 18650 10A x4 = is it good or amp is little lower?

What size heat shrink was the correct size?

Hi~ Let me ask you a question. It's a 3 inch cine hoop. In the video, there are videos of making a pack with 4 lithium-ion 18650 batteries and flying it with an FPV long range. With excitement, I ordered batteries and made a pack. LGDBHG21865 3000mA. The problem is... When I hovered, the yaw tick symptom reappeared after it came up, and, after a few seconds, the low-voltage buzzer sounded and the aircraft sank. If I open it again, it opens again,,,,, repeat... So, I changed the low voltage warning in Beta Flight to 2.7V, and when I turned it on, there was no sound. If I take a break for a while, it will float again. But it sinks again... The battery is hot, and the voltage is 3.8V... TT I bought 40 tablets... but I can't use them all? How do people use? Batteries were also made by buying anything. Is my FC the problem? Or is there a special setting for Li-ion? FC is IFlight SucceX Mini F4 V3 Stack, and the manual says 2~6 Lipol. Do I have to use only Lipol? Can I change FC? Why is this happening? It's a waste of money/work time. I'm serious~~ Please advise.~~ TT

Newbie question. If my battery has current discharge of 5a, making a 4s pack i have a total of 20a current discharge? do they stack? ty

26000? More like 2600

Sounds like you've been watching AvE.

Whats fish tape?? Or did I mishear what you actually said?

dont solder this... yeah u, dont solder this.... alright now im gona show u how to solder this... :D

Aq rakit 3s buat drone aerial dapat 10menitan

What size was the heat shrink warp

Don't solder these. (has good spot welder). "oK lets solder them!

which better with cable and solder than nickel?

What spot welder did you use?

Do these cells have safety chips

Hi bro I have a quadcopter f450 with 920kv motor and 30a esc 1045 propeller apm2. 8 and now I using 11.1v 2200mah battery gives me a flight time of 5 min I want to use these li ion cells can u pls help me which cells should I use and in which configuration pls help me out bro Thanks for reading

So there is no BMS??

Its not very smart to directly glue them together without additional insulation. the cell wrapping can get damaged very easily and then you have shorted cells.

Me? I'll soldered them.