So I saw these modular kits for 18650s for making batteries. Seeing as im not very electronically knowledgeable im to scared to build a battery like people normally would but its also quite expensive to have someone else to it. SOO was wondering if people have used these kits (https://vruzend.com/product/vruzend-battery-kit-v2-0/) for esk8 batterys. Looking to make a 10s2p or 12s2p maybe.
Any reply is greatly appreciated
Took a lot to get us here. Man those words feel good to read.
I have not, but i can definitely see the appeal. This looks like it could simplify a lot of things. for somebody starting out.
I would recommend looking at the NESE battery system. There is a detailed thread on this forum. Way better for use in esk8 than vruzend…
Very steep learning curve with battery building. working on my 11th pack and I would still not trust my work to charge in the house or give to someone else to use. If your only going to ever build 1 or 2 boards modular or get one master builders in your area to build is the go.
Just go for NESE, its great and they are known to work up to 200 amps with heavy vibrations. I love mine. Plus you can swap cells super easily. Many people use NESE in their skates. Here is the thread.
I second the recommendation on NESE. It’s more compact than Vruzend. Also, you’ll get good customer support directly on this forum from both @Agniusm and the community. I don’t think we have anyone from Vruzend here and I haven’t actually seen any esk8 builds using it.
I third
There’s a new kid on the block… These 2x3 and 2x4 Polycarbonate boxes w/ gold plated flat head screws as contacts, copper/brass strips for bus bars. They’re sold for both 18650s and 21700s, and if you order from AliExpress, can get a version with a nice built-in bidrectional charger. Amazon has some stock, plenty more available via AliExpress and Ebay.
I’m working on a modular 12S pack I can carry on a plane as 12x separate 86-99Wh USB booster packs. There’s more wasted space than w/ Vruzend, N.E.S.E., and nearly as much wasted space as the no-longer-made Batteryblocs I loved, but I can still fit 12S8P easily in an 11in tool bag, and 14S8P in a 13in bag. At $12-15 per group for “vitamins” like ring terminals, bullets, short lengths of wire, a 5V 2A USB-C bidirectional charging PCB, the box kit itself, I’m happy as a clam if this works. The screws and little bus strips may or may not have the ampacity of the strips in N.E.S.E… We shall see. Here are the boxes: https://www.amazon.com/gp/product/B0BZL8ZVCL/
I’m always worried about the cell contacts slowly denting in from the constant pressure with added vibration/shock, loosening the connections. Though I guess they can be regularly checked and the screws tightened.
Looking forward to hearing how this holds up over time!
Something like this might work really well on an ebike build. I haven’t built the battery for mine yet but I did connect and cut out the cell holders already for the shape I want. But these might make assembly and wiring a bit easier. they take up a lot of space though, I wouldn’t quite get the cell density I want. Still worth considering.
that’ll take 12 hours to charge btw
If there’s interest I can post some details about the battery blocs system which disappeared a few years ago but I built a 14s4p battery and put it in a vinyl fence post.
Made it 1100 miles before I took that ebike apart.
I intend to charge through a proper (okay, a shitty one… A Daly 30/15A) BMS as 12S once assembled.
I bought 2 different “plate blocks” of little bidirectional USB boards, don’t think I’ll use any of them. I just wanted to add for show, to create a functional USB power bank, not just a scary-looking big battery.