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Yes. Im actually filming some stuff right now. 🙂. I explain why the long break in the next video coming out. In a nutshell, testing these packs took almost 2 months. But there was nothing really to film. I’ll get into more detail though. But I promise more videos are coming. 🙂

@@myteslapowerwall7314 Im building one also, but couldn't decide on a 50v pack or a 12v for a small solar project. I figure if I wire up large packs in parrell like what you did I could always change the voltage later on to whatever I need by adding packs in series. I have about 25x ES2 scooter expanion battery packs that I have to tear apart but the cells are testing really well. Thanks, look forward to next video.

I thought about that, but with the 4 copper wires on the back it made it harder to wrap it. Still thinking about it though. But yeah, all the heat shrunk is very overkill. Lol. It was more cosmetic and me trying to build something different more than anything else. Thank you for the compliment. 🙂

Thank you. And That’s fair. Haha

I got them through eBay and Craigslist way back when people weren’t charging that much. I build some relationships and had some regulars that came to me with their dead ebike and scooter batteries. I’m also in California. These cells are everywhere. Haha

I got really lucky with those NnCR18650B’s. All from laptop batteries. The rest I got from a Craigslist ad. Then just building relationships and making deals. You just got to get out there and just make it happen. I live in California USA and there are a ton of scooter batteries and that’s where most of these cells came from. Thank for the likes and subscribes. Means a lot. 🙂

@@myteslapowerwall7314 many thanks for your reply!!! Yes, you were very lucky with this cells!!! Because im too far…otherwise would go crazy looking for those laptop batteries!!!!!!do you remember those laptop brand?? If you remember the brand/brands, i would be very very grateful to know… in case i could find here….great videos and explanations!!! Wishing to see more videos!!!!cheers!!

Kind of. Blue cells tested around 2600mah-2800mah. The purple were 2700mah-2900mah and the green were 2900mah-3200mah. Separated all of them by 100mah and then divided them all up so they be around the same (theoretically) for each of the 30 packs. But it actually worked out great. I’m on pack 23 of 30 right now and the range is 630ah-640ah for each pack. Took me days to do it. There’s 7,200 total cells.

@@myteslapowerwall7314 you must have very good supply of cell, where i m its very hard to get my hands on to any laptop batteries due to recycling law, but what i can get, have range from 1600mah to 2600mah, i think my packs aren't going to be as dense as yours (energy wise) i was thinking to do 80cell pack but after watching your videos i m going to do 200cell pack, i m aiming for 25 to 30kw power wall but its long way to go. Keep your videos coming they are very motivational and informative

Thank you so much. More videos are on the way. Got sick with a cold/flu and then 2 weeks later got covid. Tired of being sick, but I’ve been working on the Timelapse video of all 30 packs being tested.

Yeah I do have to monitor the big blue pack. Usually I’m fine if one pack is discharging at 30a and the other icharger is charging at 30a. But it does drain more than it puts back in at times. So I have to plug in the ac-dc charger so it doesn’t die. If I forget to unplug the ac-dc power and it charges to full. I’ll plug the blue pack into a dc-ac inverter and I’ll power my tv, soldering iron, charge a different battery pack that may be low. Then I can start regen charging again. It’s only happened once, but that’s a good question. You’ll notice in my next video coming up that one time lapse took 32 hours (normally 21 hours). That’s because I left the ac adapter plugged in and the blue pack charged to 100% when I was only 1/3 of the way done with the regen discharge test. It went from 30a to like .02a. It was still running the test, but it did jump back to 30a once I started discharging the blue pack again.

Thank you for the question. No, I’m not using the same bus bar. When I use the nickel fuse strips I usually don’t need more amps than what the strips can handle. The big blue pack I’m using in between the 1s packs is made up of those strips and it handles the 90amps I throw at it with no heating issues when I power things like a microwave, Small AC unit, or even an air fryer.

@@myteslapowerwall7314 so all rest of the packs are done with nickel strip? How many amps per cell you are going to draw?

@@myteslapowerwall7314 i think i saw peter from HBPowerwall channel did a video about nickel strip and under thermal camera it was getting hot, but i don't remember amps he was drawing from pack. If i Don't have to do bus bar then i m thinking to do nickel strip route, i'll wait for video and your experience with nickel stripe spot welding vs soldering

The 1s packs are the ones using copper wire and glass fuses. Only the blue pack is made with nickel strip.

The 1s packs will be drawing 90 amps at the most. The bus bar is rated for 215a.

Thank you! I appreciate that. Yeah. The big blue pack is a 7s45p and spotwelded with the batteryhookup nickel fuse plates (6p version). I’m actually going to build another one soon and make a video. I just got a bunch of new (used) cells. Capacity Testing them atm. Good luck with your builds. Let me know if you have any questions. Thanks for watching

8 awg solid copper wire, or 3.26mm thick

Thanks Luke. Always appreciate it when you comment. 🙂

Honestly, thank you so much for saying that. That made my day. I spent a long time coming up with this design. A lot of trial and error. Had to learn a lot, but well worth it. I love the way my packs look, so thanks again. 🙂

I just updated them all. Took me a sec to figure out how but I got it done. Thank you for the advice. 4.2v-3.0v is ok for me so far. 2.8v is just a little to low. Especially if I have to test them more than once. When Done. They’ll never get below 3.3v-3.4v is why

Thank you! Yeah. I thought about just letting it be after testing. But I just couldn’t. I won’t test it again if I only find one or 2 mistakes. But 3 or more and I do. I got too cocky with packs 1-5 because Packs 6-10 I’m finding more errors. Pack 6 had 5. Lol. My girlfriend just thinks we’re all mad scientist. Thats amazing that your wife helps like that. Sounds like you landed one of the good ones. 🙂

In the previous video I go over the amount of solder I use. For all 30 packs i used about 2lbs total. So it’s a guesstimate, but I’d say around 65 grams of solder per pack. The rectangle bars I bought at onlinemetals.com but I bought the 8 gauge wire on Amazon. I cut and heat shrinked everything else myself.

Thank you so much. Some say I’m going overboard with all the heat shrink and cross bars, but making it “My Own” is very important to me. So I appreciate you saying that. Each pack won’t get more than 90 amps. I have 3 iChargers x8. I plan on hooking all 3 of them to a pack for a video and setting the discharge to 30a on each of them giving me 90a. Should last about 7 hours. At that point. I’ll use my seek thermal camera for my iPhone and see if I get any heaters. Should be a fun video. But I have to test all these packs to make sure the capacities are somewhat similar first. Lol

Thank you! I’m glad to be back making videos again, so I appreciate you saying that. This is going to be 1 big battery. 15s480p. So 2 15s of 240 cells. 7,200 total cells. I broke down my previous build to merge it with this one.

Spreads it out. More copper the better in my opinion. Also, the center wire doesn’t connect directly to the main bar. So it can spread out through the horizontal wires.

Thanks man! Made my day reading that. More videos will be coming soon. Next one will probably drop this Friday or Saturday depending on my work schedule.

Damn... that’s a great point. I still have the bars to connected 2 packs each in parallel. I’ll definitely do that for those. Thank you

Thanks man! Love your channel. Yeah, Joe’s suggestion will definitely be put into play. Using the jigsaw was fun, but now I think I’m a carpenter, and want to build decks and stuff. Haha.

Yeah. I’m only pushing 6 total amps at the most right now. So there’s no need for an additional copper wire. Each row can handle 9 amps without getting warm. Times that by 15 (rows going down) and you get 135a without getting warm. I plan to hook this up to a 24v 2000w pure sine wave inverter when I go camping. So I can get it to 2000w easily before I pass the 135a Mark. When it’s done I’ll have a 100a bms hooked up to it as well. I don’t think I’ll need anything that requires that much juice. I’ll be making a video hooking the pack up to a 1800w air frier and use a thermal camera to see if the pack gets hot. Hope that helps. Thanks for watching :)

@@myteslapowerwall7314 Thanks for the reply! will keep an eye out for other vids

70kwh is the hope, but we shall see. I can’t wait to test it when it’s completed.

That’s exactly the kind of thing I was thinking of. I’m honestly going to do that. It’s officially part of the plan. Thanks man!

I currently have (12) 320 watt 72 cell solar panels. Looking to get 6 more when it’s all said and done

Thanks Man!

Thank you so much, and yeah.. it’s taken a very long time, but hopefully worth it in the end. Haha. So far I have (12) 320w solar panels. Looking to get 6 more. Victron 150/85 mppt controller. Batrium Watchmon 5.

Yeah. Plywood isn’t the best idea, but I was thinking of starting with that and upgrading later. I still have 1 barebones server cabinet. Same model. So I’m going to use that as a template. Not sure about the metal walls, but fireboard is something I’ll look into. The side casters can hold up to 2500 lbs. my estimate has it around half that. But definitely something I’ll be watching closely. The aims inverter is around 150lbs. Probably my only worry. Anyway, I appreciate your input.

Thank you!

I just rewatched the video and realized I didn’t bring that up this time. This was like take 10. Haha. Of course I still ended up forgetting something. I’m guessing you remember what that was like when you started. Haha The heat shrink is on there because when I broke down my previous Powerwall. I noticed the copper was just dirty. The Powerwall was in my garage, and the garage door was usually open. I also wondered if that had any effect on the efficiency of the packs with the copper being so dirty. My uncle who is an engineer said yes. So I figured what’s not being covered with solder, I’ll cover with heat shrink and see how it looks and performs after a year. and compare that my previous builds efficiency and look over the same time. Plus now the plexiglass will go around the entire pack. Instead of just protecting the sides. Thank you so much for the follow! Any advice from you is more than welcomed.

Plus, like I said. I think the heat shrink looks cool. It’s at the least unique. Haha

Wow, 14S 600P, is that about a 100Kwh pack? I'm making a 14S75P powerwall from 3200Mah Panasonics. When you have 600P, don't you face the risk of individual cells becoming out of balance, simply because you have so many cells all being balanced at the same rate, thousands of times throughout the years? Or is it that because they are in parallel, they all balance equally no matter what?

@@AllAroundTube50 They are all in parallel, 600P, so they behave as one big cell.

I probably... no, I am over complicating it. Lol I know I could cut it back and it would still work just fine, but I also want to make it unique and my own. It’s been a lot of fun so far. That’s the most important part. 🙂

8,400 cells!! That’s awesome!! I thought I was crazy about building a giant battery. Good to see there are fellow nerds and mad scientists out there. 🙂

Yes. 7,200 total cells. And thank you! :)

@@myteslapowerwall7314 3 years working at it. Maybe 2000 18650s above 2AH.

LithiumSolar I wish I could take the credit. They actually came this way. If you break the packs down the right way. The insulators are still 100% intact. Peter does use the trick of putting the insulators in the 18650 spacers. Then putting the cell in, positive side down. I thought that was clever. It does give you a sense of extra protection when using them though.

vto rsi it’s not what you know, it’s who you know. :). Honestly, just calling around locally, Craigslist, ebay, websites. Just got to get out there and try

@@myteslapowerwall7314 Calling around to who? Can you give some ideas on who or what kinds of companies use this many battery packs? What did those packs come out of?

LasVegasVocalist recycling centers, and computer repair shops. All the green cells from my more recent video are from Fujitsu Toughbook laptop batteries. Hundreds of them. Purples are from e-scooters, hoverboards, and ebikes. Hope that helps

yes it does. helps with resistance and even flow (heat). ill be posting more videos soon

So far it’s looking like a 72kwh build. :)

Thank you so much! This one was about 19kw (16kw useable). The new one will be 72kw (68kw usable). I’m still testing packs but that’s what it looks like it will be. :)

EBAY, Craigslist, laptop repair shops, and recyclers.