Advice needed- Bafang BBS01B 250w

[anotherkiwi]

+540 W on assistance level 5... I have seen a peak of just over 600 W with the battery hot off the charger - 41.5 V x 15.11 amps

 

[Woosh]

That's quite encouraging from a 250w motor!

that's on the label - but if you hook it up on a KT 48V 20A sinewave controller, it is a very capable motor.

 

[mnf441]

that's on the label - but if you hook it up on a KT 48V 20A sinewave controller, it is a very capable motor.

I was only planning to ride to work (five steep hills, 12 mile journey each way) and down some canal tracks at the weekend... Might not need so much power, lest I desire to swim with the ducks and local wildlife. . However, if this is so enjoyable as everyone says it is for them, I might invest in full Susser and slog the BBSHD on it, the missus (and budget) permitted, obviously...

 

[topographer]

As there is a thumb throttle, I assume I shouldn't mount this to be road-worthy? (Yes, I did buy the lower rated motor of 250w to attempt to 'look' road legal without needing to sand-paper the bottom plate, showing the wattage info)

Full throttle isn't illegal if doing a conversion. It's only illegal for O.E.M.s to sell bikes with 'em on.

 

[mnf441]

Full throttle isn't illegal if doing a conversion. It's only illegal for O.E.M.s to sell bikes with 'em on.

Thanks for the clarification!

 

[mnf441]

Ok, so according to you guys, I should buy a bigger capacity battery, so (I'm hoping the missus doesn't finds out I'll be whacking £300.00+ on it), it's between the following:

http://eclipsebikes.com/product_info.php?products_id=110 (Whale sized)

and;

http://eclipsebikes.com/product_info.php?products_id=144 (Dolphin sized)

Other than the slight price, size and weight difference, are there any other differences to me choosing either one?.

FWIW, I did look at Whoosh and brightonEbikes.. Eclipse had the better website experience and probably best for value (save for the bling ring, which i'll be saving up for a later job, depending on the performance of the stock chainrings)

Thanks for your valuable input, as always!

 

[Nealh]

Both have the same 29E cells and bms rating so the choice is yours, the HL is bit more slim line.

 

[mnf441]

Both have the same 29E cells and bms rating so the choice is yours, the HL is bit more slim line.

Will the continuous discharge current be ok for the BBS01B? it states 20-25Amps, but I'm sure i read somewhere, the BBS is 15-18A?.. or does this not matter?

 

[Nealh]

Depends on which BBS01B you have, the amp rating is on the underside of the unit. 20-25a bms rating will be fine. If it is the 25a rated on then the 30Q battery will be better with the slightly higher spec bms.

 

[mnf441]

There is are more than one amp'd version of the 250w bbs01b?

Guess I'll have to wait for the delivery before ordering the battery then. Cheers Nealh

 

[Nealh]

15amp 250w or the uprated 25a 250w marked version.

 

[mnf441]

So, basically; the battery is ok with either amp'd versions 15A / 25A, but if I had the 25A motor, then I'm better off buying the better quality 30Q battery version (but will lose a few amp hours for my £££ )?

I'll ask the seller and see what they have to say. It's due to the UK in five days... so excited!

 

[Nealh]

Probably the 15a rating as the 25a one is about £100/ $130 more.

 

[mnf441]

Yes, seller just confirmed as such... it's circa 11:30pm in China!

So, 20-25amp discharge rate is ok for this 15A controller? http://eclipsebikes.com/product_info.php?products_id=144

Or should I just get better quality and go for 30Q version?
http://eclipsebikes.com/product_info.php?products_id=102

Difference: 3.4ah... what's that in real terms... 5-6 miles over longevity?

Muchas gracias...

 

[Nealh]

The 30Q like for like is the better cell and the pack is a bit lighter, price wise only a fiver in it. 29E battery has 6 cells in parallel (6p) with 5p in the 30Q cell pack.
29E battery theoretically has 20% more range then the 30Q one, in a 6p configuration the 29E will be pretty good and for £5 less you have the extra range and will be more then adequate run at 15a.
Range difference could be about 10 - 15 miles or even a bit more but with so many variables involved it is hard to put an exact figure on it and each ride will always be different.

 

[mnf441]

The 30Q like for like is the better cell and the pack is a bit lighter, price wise only a fiver in it. 29E battery has 6 cells in parallel (6p) with 5p in the 30Q cell pack.
29E battery theoretically has 20% more range then the 30Q one, in a 6p configuration the 29E will be pretty good and for £5 less you have the extra range and will be more then adequate run at 15a.
Range difference could be about 10 - 15 miles or even a bit more but with so many variables involved it is hard to put an exact figure on it and each ride will always be different.

Thanks again for the wisdom.

 

[jarob10]

The 30Q like for like is the better cell and the pack is a bit lighter, price wise only a fiver in it. 29E battery has 6 cells in parallel (6p) with 5p in the 30Q cell pack.
29E battery theoretically has 20% more range then the 30Q one, in a 6p configuration the 29E will be pretty good and for £5 less you have the extra range and will be more then adequate run at 15a.
Range difference could be about 10 - 15 miles or even a bit more but with so many variables involved it is hard to put an exact figure on it and each ride will always be different.

How about this as an alternative to the 29e 6p pack? Any opinions?


http://s.aliexpress.com/nM77nYFr

 

[Deleted member 4366]

It's 60 cells so quite heavy. i think you'd be better off with an Eclipse battery because you get UK support in case of problems.

 

[Nealh]

How about this as an alternative to the 29e 6p pack? Any opinions?


http://s.aliexpress.com/nM77nYFr

Fed ex will probably calculate 20% vat & a handling fee on top.
It will weight the same as the 29E 17.4ah as they both will have 60 cells.

 

[mnf441]

Fed ex will probably calculate 20% vat & a handling fee on top.
It will weight the same as the 29E 17.4ah as they both will have 60 cells.

I ordered the 17.4ah from Eclipse on Friday, they organised delivery near immediately (as I ordered circa 3pm, it's likely to be actually shipped on Monday). Seems to be excellent service to me!

Anyway, I considered the option of ordering from China (the BBS01B seller offered me this option), but I declined for that tax and handling fee matter (though I will be paying this for the motor, to be delivered this Wednesday... Its still a bargain when factoring in the DCP14 colour display I am to receive).

The only concerns I have remaining are to do with a few previous complaints regarding the grease in the gears in previous versions of the bafang motor and whether my new BBS01B will need to be opened for extra apllication of Mobil grease 28 (as recommended by others)