Bafang BBS02 750W Mid Drive on Craigslist Hardtail

[KINNINVIEKID]

I finally got my Recycled Laptop Cell Battery soldered up. I packed them into 3 bricks of 4S each and wired in balance leads, so I can pair them with my 4S LiPo's and charge/balance them all in parallel.
The Laptop Pack and the RC LiPo combine for a total of 26 AH at 12S (44.4V Nominal)
They fit snugly in a 50-Caliber Ammo Can I picked up at the Army Surplus store. - Once I have a rear rack mounted to the frame, I'll be testing for range. My best guess is at 14 Watts per mile, I should get around 75 miles of assisted pedaling, which is probably longer than my ass can handle.

I love seeing how al these different lipo pack options work.

This is my 12S1P 16Ah pack for my BBS01.

I just remove the serial harness and plug 2 chargers in .

 

[teslanv]

It's been almost a year since I built my first ebike (or rather should I say, installed my first Kit.)
For the record, The Ammo Can is way too heavy to be useful mounted on a rear rack. I have since refined my top-tube pannier bag. The latest version will have capacity for (6) 6Sx16Ah Multistar packs for a total of 12S-48Ah (Over 2KWh) in addition to another 12S-16AH in the EM3EV Triangle bag. Of course the reality is that unless I have the need to travel for 200 miles without the ability to charge on the road, it would be silly to strap that weight to the bike.
I still really like the agility of a 12S-5Ah Turnigy Hardcase pack. Crazy Light, and enough energy to get me 10-15 miles with moderate assist. That, to me is the sweet spot.

Three of these are all you need.
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=18631

 

[teslanv]

I find it interesting that a few veterans who have tried the BBS02 system are now going back to Direct Drive Hub motors.

I myself, find that the BBS02 Mid Drive is an adequate kit and quite easy to install for beginners. But I find myself wanting more power, and beyond "upgrading" your battery to 14S (58V) the BBS02 does not have much to offer for >1500W power.

This is why I have decided to spend my time and money into bringing the Sphere the MXUS line of Direct Drive Hub Motors.

I have a fondness for (and will likely keep) my BBS02 bike, as it is great for an agile trail riding machine and a great "Grocery Getter" , but I believe there is a niche to be filled in the Low-Cost/High Performance ebike Kit realm, and I intend to fill it with many 3000W MXUS Hubbies.

Always moving forward...

 

[kje]

I,ve mounted my BBS02 750w 48v motor and wonder how I should configure my battery with 18560 cells.

Is it a good idea to make two 6s packs and one 2s pack and connect them in series with series adapter? Or is there better configurations? Three 5s packs? Or three 4s packs? What is minimum and maximum voltage on the 48V 750W BBS02 Bafang?

 

[WoodlandHills]

There is a wealth of BBSxx programming information here:

http://electric-fatbike.com/2015/06/26/a-hackers-guide-to-programming-the-bbs02/

Lots of other stuff, too. It's my new favorite website!