What is the best lion pack I can buy for around $200 or a little more.
No real options unless you go DIY or diyeboards
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I would think this: http://www.diyeboard.com/10s5p-360wh-18650-battery-power-kit-with-bmscharger-enclosure-p-572.html
Yeah alot of people say it is bad because it does not use good battiers
I always wondered if you wire 2 in parallel it wouldn’t be a bad battery but damn 10s10p for 720wh is kinda sad but really not bad for less than $400
You can have cheap or good, and you’ve chosen cheap
That is true I might just get 10s2p from mboards for 250
Have I chosen cheap
£85 for 30q 10s3p £35 for my diy battery spot welder £20 for misc
£140 total
I dont think cheap is bad?
BMS is about $40
Yeah sure, but can also use charge only
That’s only cheap if you are successful, when doing DIY there is always extra hidden cost somewhere and there is a chance you can mess up cells or a bms while making it costing you more money and time.
Dont get my wrong I encourage DIY it’s fun and satisfying but it’s not the best option for everyone.
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That is what I am worried about
Yeah I always encourage DIY. Because those cells that diyeboards use are dogshit 
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there are a shit ton of diagrams and everything
the hardest part is the bms, and that is simple if you actually think about it
check the wires 5 times and your golden 
Yeah I haven’t built a pack yet, the BMS is the thing that scares me
What spot welder would you recommend
Yes, THIS.
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Arduino one and a 5ah 100+c battery this comes out at around 160$ if you add the cost of cells it comes out more expensive than just getting a battery from a guy on here so unless you are planning more batteries for whatever you need its not worth it IMO unless you want to learn how and make it yourself
I really like the DIY route, I went so far that last weekend I installed floor heating piping for a 100m2 brothers house, like 900meters of tubing
Yeah probably could work, I was originally planning to get that pack but I have decided to go DIY route