BH battery and BMS types

We can use our smart SOC boards for all the bananas, and the non-Brose plastic flat ones. We never tested with the metal ones, but probably okay too.

On all BH bikes, the charger is 'dumb', it is only positive and negative. You can use the original charger connectors that we have salvaged, or crocos. Be super careful that the crocos cannot jump off, or touch any of the communication pins - we had killed batteries like that before.

With any BMS, it is okay to nicely disconnect it and reconnect it - it won't die. Sometimes it needs a while to wake up.

Banana

Exists in 36V (10S4P) and 48V (13S3P) versions - the 48V is very rare. The 36V came in 8.8, 11.6, and 14 Ah sizes. It does not have LEDs for SOC display.

Plugs

The indented side is the negative.

The 48V charger has a blue plug.

BMS

Resettable sandwich

The first versions had these resettable BMSs - the button is on the negative side, at the bottom, on the inside of the sandwich.

Green BMS

Latest models came with the green BMS familiar from the flat ones:

Flat plastic

Exists in 36V (10S4P) and 48V (13S3P) versions.

The bottom part of the plastic housing existed in white and black, the covers in various designs.

They came with many different BMS generations, but the battery itself always looks the same at first blink. The plug helps tell them apart.

The 48V came in 9.6 Ah.

Plugs

The 48V and 36V plug differs in a hook. It also came with upside down plug for the Brose motors.

Normal 36V

The SOC pin is pin 4 - the one right next to the negative power pin.

Normal 48V - notice the hook!

Upside down 36V 

The infamous inverted pussy! We cannot replace the BMS yet. It seems these only came in 36V, but always 14Ah. These were expensive bikes. Also the 'Revo' cargo bike system used these.

Pin 4 is the SOC, pins 1 and 2 are UART?

Plugs breaking off

Common problem. You need precise positioning, and lotsa epoxy to glue it back well.

BMS

36V 11.6 Ah, model FB-018-36V-11.6AH, model code EV404, date 2013/10/30. Model code EV414 date 2013/08/14 had the same.

This version has the button and LEDs integrated onto the sandwich board, which means that we cannot make the LEDs work with these with our SOC board.

48V 9.6Ah, model BH1303EI

36V Brose, model BH-04-35L

It is very easy to break off the temperature sensors from these!!

36V, 14Ah, made in 2020

Metal

Quite rare. Exists in 36V and 48V versions. They are bigger, heavier, and have different connectors.

Rare early batteries from BH

We never had these for service.

Trapezoid

Rectangular