I never seen your channel before. This video is 6 years old. I'm starting my build on my 18650 diy powerwall. I'm doing this on a very cheap budget. Most of my cells are free. What was the out come on your diy powerwall?

Great info.

Bms=0000

Oh yea, it’s already together 62.7v

Anyway I can send new pack I built to you in order to get good welds ?

You may have some sells that have excessive internal drain. Bms will balance if sells are closely matched. I build the LI-ion battery substitute for my Worx 36v mower as well but 10s4p -6AH. Good for 30-40min of mowing.

How do I plug in mower to charger? Is it green to orange & white to white?

To plug in is iit green to orange white to white?

Hi ! Incredible work dude. How would you output a constant 14v out of it with a decent amperage (100a)?

Hey frank i cannot get the spreadsheet the link is broken

No BMS???

Very good video. But I strongly disagree about soldering to the batteries. the heat will damage the cells. Always spot weld, it is the safest method.

I had bought 300watt, and 90watt non worked until I stumbled on your video. I bought a cheap 100watt and it worked like magic. Thank you for sharing your experience.

Please can you share you circuit diagram

Thank you man! This was really helpful!😎✨🙏👍 I have 80 x 18650 batteries, a 24v MPPT & a 24v Pure sine wave inverter... Any recommendations for building multiple 24v packs to use to charge laptops, phones, maybe a lamp...or a kettle? I thought I could have a bunch charging by solar while I use the others?

Love the video. Anyway I can the link to the big zapper lights

Thanks Frank 👍

Thanks heaps for this video frank. I bought a 2 room tent similar to yours and was at a lose when trying ( and failing ) to put it up in back yard, thanks again mate, gonna sub and check out your content : )

Hi Frank! Do you still have the spreadsheet? Are you able to upload it somewhere? Thanks a lot! :-)

What a beautiful pack behind ;) 👍

How has the big horn been holding up? I'm thinking about getting this one.

Just wondering what happened to you. I know that the videos may not be the biggest for views. I just want to say that your content has been helpful for battery packs. It's a great source of knowledge.

Thank you.

The IMax allows you to plug it into a PC so you can monitor the response curves of each Cell graphically.

Good videos and awesome looking power pack!

Very impressive. Congratulations!!

Frank check out these new big lithium bstteries! Ray See comment below this

What BMS did you use?

Your wife got you my subscription. Relatable

How big is the cutting deck

Good for you but I learned nothing. Brag video.

Frank can I use 2 3s bms’s for a 4s batt.?1 for the first 3 cells and 1 for the last 3 cells.?????

Would a bms fix rhis

Hello Frank I built a 4S 20p 18650 used battery and can only get half of it to charge and discharge. have any ideas I’m using a balance charger and a cell balancer but no BMS would it be a mess fix this

I hate bootube

Where do my comments go????

Ok Frank I built a 4s 20p and only half of the battery discharges, I cannot figure out why. Yes I used 18650 cells, I only charge it with a balance charger, and have been using a cell balancer but no bums. My inverter reads 15 volts and works fine but only have discharges. Would a bms fix this. ????

Those are "Weller" soldering irons. Not Welder.

At 3:53 you have your watch clasp dangerously close to shorting out on the batteries. NO jewelry when working on these projects please.

This battery does not have 1346 watts of energy. Here is the correct calculation; There are 40 x 18650s. Each has around 2.5 ah at 3.6 volts. (2.5 x 3.6) x 40 = 360 watt battery.

I realize that I am a little late to this party, but decided to undertake the same conversion of my B&D mower. Now, 3 years later, is your battery still working out for you? Are you using the charger that came with the unit? Great project, thanks for leading the way!

Great video! Have you been able to update the cell brand-model sheet?

Thank you so much for this video! I'm in the process of gathering up all the goodies to build my own portable power bank, I'll be doing a 4s 30p pack. This will be very helpful in my build. I'm hoping to be able to run my trolling motor battery off of this pack. If I have to, I can build a another battery pack to go inside of this portable power pack, provided that there's enough room. Which I think there will be. I just hope I can provide the 55 amp draw that my trolling motor will need.

Just found you tonight, Frank. Have watched a number of your vids. I am just starting my solar/lithium adventure. You are a great teacher. I can't understand why you don't have a much higher subscribe rate -I have done so, to say thanks. PS. your solar power pack is probably the best design I have seen. And I've watched a few. Just wish I could get a decent supply (mAhs) of used 18650s, where I live :-sigh

I see you use fuse wire. How do you know what kind of wire you use and for what load they are made for?

Nice

Thank you for these very thorough videos! Super useful:)

Fusing both sides of the battery back is a waste of your time you should just stop doing it

I never got access to your spreadsheets after registering

please make a material list, thanks