BBS02 battery charger

[saneagle]

and the apparent inclusion of a cooling fan, which seems to be a desirable feature to look for in a power supply.

The only chargers I had problems with were the ones with fans. The ones without fans don't get hot, so they don't need fans.

 

[guerney]

36v – 42v 10S – eBike Batteries

ebikebatteries.co.uk

I wonder if their "pulse" chargers can be modified to charge to 41V? Perhaps I should mostly charge using one of these? Balance charging to 42V every so often, to extend my battery's lifespan?

https://www.amazon.co.uk/RUZIZAO-Power-Supply-Variable-Adjustable/dp/B09H7D1FDS/

 

[soundwave]

its only 30v 5a you need one thats 42v or more like a lab power supply

 

[guerney]

its only 30v 5a you need one thats 42v or more like a lab power supply

Yep - up to 60V. I'd only want 2A:

Bench Power Supply Variable 0-60V/0-5A Regulated lab DC power supply PSU used for Lab Teaching, Electronic Repair, DIY,E-bike,Motor and Plating

https://www.amazon.co.uk/Supply-Voltage-Current-Adjustable-Digital/dp/B07L3K6CZ2/

 

[soundwave]

just double check what you set it to it might say 42v but might be 42.05 with a decent multi meter

 

[soundwave]

ans as you are here i tried to change the amps on my m8s hd and it is locked at 28a and is using way more batt that his other bike set at 30a ?

it has been sat in a box for well over a year but it is potted so cant check anything seems his controller is falty

 

[guerney]

AFAIK there are different current limits on HD controllers: 28A, 30A, which might be altered by complete firmware replacement?

it has been sat in a box for well over a year but it is potted so cant check anything seems his controller is falty

Was the battery sat in a box for a year? If so maybe it needs a balance charge? And a battery boffin. Do both batteries contain the same cell type, are the batteries the same capacity?

 

[soundwave]

no he has 4 batts its the controller but if it is firmware locked then it does not explain the batt usage as should be less not more

 

[guerney]

Do a bench test and measure the amps drawn from the batteries?

 

[soundwave]

it does the same thing with all 4 batts less amps and less range like a sort of short or bad connection on the controller.

 

[guerney]

Did he fit the controller himself? I've never seen a HD, but if it's as cramped as the BBS01B, it's easy to pack the wires too tight when reassembling, risking bullet connector connections. Controller and motor should be easy to push together, not forced, rearrange the wires if not. But of course it could be some controller component failure, in which case you'd need help from someone who knows how to test and repair BBS controllers.

 

[soundwave]

the cables look fine but i cant see past the potting so could be duff from the factory fkn things are 135 quid now

 

[guerney]

Your mate might have to start a thread about how to test and repair his BBSHD controller. Cheaper. @Topdonkey managed to pick out the potting and replace MOSFETs on his BBS02:

Any UK Bafang hub motor suppliers ?

I've actually got a Dahon Curve at work, but its a 20" model. Is that the posher Curve i3? https://eu.dahon.com/bikes/curve-i3-20/ I'm thinking of putting my BBS02 750W crank motor along with my 52v battery on the Dahon just to see what its like to ride, I bet that will get up any hill i...

www.pedelecs.co.uk

 

[soundwave]

i said just swap the controllers over but not opened his old motor so not sure what version it is as the connectors are different.

the new motor never even had a gasket fitted to the controller

 

[guerney]

the new motor never even had a gasket fitted to the controller

Water ingress causing problems perhaps? Maybe dry the controller and the motor bullet connectors? I recently managed to dry out my Canon 650D camera using these dessicant silicone beads, time'll tell if permanent damage has been done to the camera. I should have waited a few weeks and bought the 700D, which is the same camera but weather sealed

500G (0.5KG) loose Silica Gel Dessicant Granules Beads SELF INDICATING - ORANGE | eBay

Product: Loose Self Indicating Silica Gel. Weight: 500g. Colour: Orange to start, that turns dark green upon saturation. We will always help you to have a 100% positive happy buying experience. View Our Categories.

www.ebay.co.uk

Geenbikekit left out the gasket when I bought my spare controller, but they made it right by sending one two weeks later, but it's not rubber. I'll use some heat tolerant silicone over it, to seal.

 

[soundwave]

he should of tested it when he first got it, took me 5 years to make him get one in the first place

 

[guerney]

My spare controller has been sat in a box for about two years. I don't know if it works, but BBS01B controllers are cheaper Although about two weeks wait of course, for a new one.

 

[soundwave]

last time i looked they was like 75 quid but ppl can shunt mod them to 50a for 60 quid

 

[guerney]

last time i looked they was like 75 quid but ppl can shunt mod them to 50a for 60 quid

 

[soundwave]

you can shunt mod even bosch motors problem is the batts as mine are limited to 20a discharge and no way atm to mod the bms

but if you do this and the batt can only do 30a discharge means fire check the rc lipo vid