Yo. I found this case on Aliexpress that looks perfect for an E-Bike build I'm working on. I really like the form factor of the UPP batteries but I feel like I can make them for less money and with higher amp output. This battery case is designed for 70 21700 Li-Ion cells, making it quite bulky. I can't wait to build with it! The unfortunate thing about this case is the lack of documentation provided by sellers. I had to order the case and take measurements myself before ordering the BMS, wire, and extra nickel strips. The purpose of this video is so that you can be aware of all these things before you place the order. Link to product (ChamRider Polly 7 48V Ebike Battery box 52V Battery Case 36V Battery Housing Downtube 10S7P 13S6P 14S5P 70 21700 cells): 0:00 Unwrapping 0:45 Package contents 1:40 8 AWG doesn't work well 3:38 The case 3:51 The cell holders 4:48 Battery status indicator 5:38 BMS clearance 6:53 Other accessories 7:16 Nickel plates 8:27 The most important part of the video 8:53 Nickel plate arrangement for 14s5p 9:19 Downsides to the nickel plates 10:35 My final assessment 11:49 +2mm BMS thickness clearance 12:48 Nickel plate measurements 13:39 Just get the 13s5p configuration and ditch the extra voltage