I’ve now built two batteries using the 12s4p 18650 diy kit. Very well thought out system, literally everything you need (except solder, hot glue, and heat shrink, which c’mon if you’re building a battery, you better already have those) . I recommend also ordering his 13 pin JST balance cable harness that plugs straight in to a Daly bms...again total no brainer.
Can't say enough good about the people at DBS. From start to finish, Ben answered all the questions I had for my build. The quality of pcb board was amazing. The price is even better. Orders always arrive on time, neatly packaged and secure. Only complaint I have, I don't have any duck stickers, would be 6 ⭐ instead of 5.