7s-21s 300a Lithium Ion / Lifepo4 Smart BMS + Bluetooth

We have both lithium ion and lifepo4 versions (select from the dropdown menu). These come with the bluetooth already installed.

These BMS units are brand new and work for all variations from 7s to 21s and everything in between. This BMS is rated for 300a continuous.

Included is 4x 4AWG wires with ring terminals already crimped. This makes installation even easier for you.

There is also a 400a fuse that must be installed in-line on the positive size of the battery as shown in the wiring diagrams. We include a 400a fuse so you can run 300a continuous without worry of breaking the fuse.

Note: We have all of the wiring diagrams added in the photos for each configuration. Pay close attention to the balance lead wires and where they need to go. Some cell groups will get multiple balance leads connected instead of 1. Follow the wiring instructions.

We tested many different 300a BMS units and this one in particular we believe is the greatest value and excellent quality.

It weighs 4 lbs and also comes with temperature sensors. Charge up to 200a and discharge up to 300a continuous.

Will protect against charge in freezing temperatures 32 degrees fahrenheit and below.

It will also balance at 180ma.

If you have a project that requires a high amp BMS this is a great option. Especially for golf carts, forklifts, and solar battery systems.

We also have the computer interface available if you want to add it. You would just have to unplug the bluetooth and plug in the computer interface. If you want to change many parameters we recommend the computer interface module. 

Below are the bluetooth app downloads.

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