Yes this is the  BBS02B :)  UART Version

Yes it is fully unlocked :) (with a $15 program cable, or Eggrider display, you can fully customize the motor settings/ parameters to make the motor behave EXACTLY how you want it to!

A proven motor with years of service to its track record. Affordable, efficient and reliable. If you want performance at a reasonable price, look no further. Puts out over 1,400 watts at peak output with a 52v battery. Offers both throttle and Pedal assist operations with up to 9 different levels of motor input. Remember to add:

gear shift sensor-https://www.johnnynerdout.com/product-page/gear-shift-sensor, lights and a bell for the ultimate package!

Kit includes:

B/W display (800s unless upgraded display is selected)

Integrated controller

Universal Thumb throttle (can be mounted on left or right side)

Brake cut-offs (specify if you need hydraulic, mechanical cut offs or none if you dont them)

Mounting hardware

Crank arms

Chainring (36-52t)

Includes longer Bolts for 73mm Bottom Brackets (others charge for this)

Comes with Anderson Powerpole connector upgrade (others use Bullet)

Motor weighs 9.2 lbs

Make sure you have the right tools!

https://www.youtube.com/watch?v=xWonAUkXJI8

Warranty?-6 months against manufacturer defects. Install errors and Burned out motors are not covered.

How to choose a charger:

A slow 2a charger is generally fine for any battery. If you are not sure or want to keep costs down, get the 2a charger. It charges at 2 amps. Divide your Ah rating of the battery by 2 (a) and that is how long it will take to charge your battery from 0% to 100% roughly. 

*** we never recommend running your battery to 0%. You run the risk of it not working properly if you do it enough. 

Batteries prefer to stay between 30-80% state of charge (Soc) so charging it to 80% is best for a battery. In fact if you keep your battery between 30-80% for most of its life, you can essentially double the life of your battery! 

What else does Johnny recommend?

If it was my build, I'd be looking at these accessories as well:

https://www.johnnynerdout.com/product-page/bafang-front-rear-horn-turn-signal-light-kit

https://www.johnnynerdout.com/product-page/mirrycle

https://www.johnnynerdout.com/product-page/zip-tie-assortment