BBS01b 250W 48v Amps?

[SkyMonkey]

Hello.

Just finished motorising my road touring bike.
I am looking to re-flash my controller and have been looking around for the amps limit for a BBS01B 250W 48v.
This motor seems to get almost zero hits on Google. Is it an unusual configuration?

I am looking to use the bike for commuting in a hilly city (Sheffield) and in the Peak District, sometimes with loaded panniers for camping.
So, I want a slightly conservative Amp limit to protect the motor/battery/controller/whatever.
Can anyone advise a suggested setting (and explain how it was arrived at).
I have a 48v 20Ah battery too if that helps.
All speed settings will be UK legal.

Cheers

 

[Az.]

I don't have BBS01, but if I were you I would just try different settings starting with 15A (assuming you have decent battery).
For me 16A is more than enough for every scenario.

 

[guerney]

I have a 48v 20Ah battery too if that helps.

Do you have more information and a product link, so the battery experts can advise re: safe continuous current discharge?

BBS01B 250W 48v

I'd be interesting to read if the current limit of your controller can be increased. Unfortunately, @peter.c's isn't:

The 48 v 250watt bbs01 is firmware locked to 12 amps max, not found away around this in a 12+month search mine is on without a throttle as well .

https://www.pedelecs.co.uk/forum/threads/250w-bafang-kit-locked-down.45792/page-2#post-705774

 

[SkyMonkey]

The Motor:

BAFANG 48V M215 BBS01B MM G340.250.C for eCity eTour eRoad Conversion

Varstrom provides professional electric assist bicycle solutions, we are one of BAFANG's largest partners in the past 5 years, we sell BAFANG motors, and provide other accessories needed to the eBike conversion, such as batteries, displays, ebrake levers and all the required kits. Varstrom helps...

varstrom.com

The 48v 20Ah Samsung 217500 Hailong battery:

Varstrom 48V HaiLong/Rear Rack Battery - DIY E-Bike Battery for E-Bike

We must choose a ebike battery that will protect the eBike system. Varstrom Hailong ebike battery power and protect the Bafang drive kits, increase the life of the eBike motor.

varstrom.com

 

[SkyMonkey]

OK. Cheers for the heads up to the other thread @guerney.

I'm fine with the Amps being locked.

The throttle is locked too?
Some said that theirs were locked at 4 mph.
Mine seems to be locked to motor cadence.
I did change the settings on the 500c to 4 mph.
In 1st gear (R34t x F44t) it is about 4 mph, i.e. walking speed.
As I go through the gears I can get to about 10 mph on the flat.
I only want to just cap it a walking throughout.

 

[guerney]

OK. Cheers for the heads up to the other thread @guerney.

I'm fine with the Amps being locked.

The throttle is locked too?
Some said that theirs were locked at 4 mph.
Mine seems to be locked to motor cadence.
I did change the settings on the 500c to 4 mph.
In 1st gear (R34t x F44t) it is about 4 mph, i.e. walking speed.
As I go through the gears I can get to about 10 mph on the flat.
I only want to just cap it a walking throughout.

I did manage to limit the throttle by specifying amperage and speed values for a pedal assistance level on my DPC18 display, and assigning the throttle to that level. How is on this thread somehere:

How much battery sag is too much for a 3 year old battery?

My bafang BBS01 has spent more time in the garage than on the road over the last three years. It has done about 2000 miles and has been kept charged when not in use. Now that I have tinkered with the firmware settings so I can get easy access to higher power levels in my hilly location, I am...

www.pedelecs.co.uk

(After the lights, the park, and the bit starring the cat)

It worked, limited throttle speed to 6kph in use (usually a little over 4kph when climbing), but I don't think the BBS01B controller is terribly good at calculating low speed. Current control worked best, got me up hills very slowly. Hard to balance going so slow on a 20" wheeled bike, however. I've removed the throttle since, not needed.