7-14s JBD / LLT Bluetooth Smart BMS (JBD-SP14S004)

The JBD/LLT 14s smart BMS is an awesome addition to any battery build. This smart-detecting BMS can automatically range (when wired according to the instructions) between 7 and 14s. This allows for use in a wide variety of builds and use-cases. In addition, this is one of the smallest 14s bluetooth BMS's on the market. Measuring in at just 63 x 52 x 12mm, it offers a ton of features in a tiny package. This is the latest in the JBD offering, with one thermistor, and an on-board BT module, unlike the old versions with the attached dongle.
 
Through the common discharge port, this model supports 20A of discharge, and up to (30a) charging, according to the spec sheet. Use at your own risk. 
 
JBD also offers a UART dongle where you can attach and communicate with the BMS, but that is not included here.