cell_man
100 kW
We occasionally get emails from customers that are new to Ebikes, asking about this wonder 750W BBS02 with a special 16 mosfet controller and 1300W (used to claim 1400W if i remember right) that only Busettii offers. They saw it on Amazon. It can be bought here: http://www.amazon.com/Electric-Bafang-8fun-Version-Controller/dp/B00LGC3QIY/
I am sorry, but there are several stretches of the truth in this description and 1 complete and utter lie. Stretching the truth a little is not so unusual for many sellers, but i find the lies about their wonder 16 fet controller to be a step too far.
I just do not understand what is going through someone's mind to make this claim and it makes me think they do not have much of a grasp of the technical details of such parts (and they are full of it too, IMPO only of course). For 1 thing, it is a 3 phase BLDC controller, and such controllers simply do not use 16 mosfets. The least fets that can be used is 6, then 9, 12, 15, 18 etc are normal configuration. So what, they tagged on another Mosfet, just for the hell of it, or they are counting maybe some small SMD parts on the PCB as an extra mosfet or 7? They found time to completely re-design the BBS02 between their busy schedule of running an Ebike store, or their buying power meant 8Fun gave them this wonder controller for their exclusive use?
The Fact is, the BBS02 25A controller uses 9pcs of TO-220 mosfets and has done so for close to 1 year, prior to that they used just 6. the housing had to be modified to fit 9 fets, and it is a tight fit.
It is normal practice to rate motors by their rated mechanical output power. The BBS02 is rated 750W output power at 48V, it uses a 48V 25A max, controller.
48V and 25A makes 1200W (48*25) max input power to the controller. The claimed 1300W max output power is coming from where? Coming out of where, the motor or the controller? Must be the controller, right?? Also they must be using higher than standard supply voltage voltage to make that figure? 52V and 25A makes 1300W max Input Power for example. Is 1300W max output power an accurate description? Maybe but they means 54.6V and 25A (charge voltage for a 13S battery). which means 1365W IP which could be ~1300W controller Output power, assuming 95% controller efficiency.
So, I Can't say 1300W Ouput Power is an outright lie, but it is a dishonest description IMO and very misleading. We supply 14S batteries with a 58.8V charge voltage. Would it be right to state the BBS02 has a max power input power of 58.8*25 = 1470W? Or maybe i could say the controller is 95% efficient and call the standard 48V 25A BBS02 ~1400W Output Power (at least for a brief moment on a fresh battery).
Maybe i am wrong, maybe everything they claim is true, but I'm sorry, i just can't see it. Anybody with some technical understanding on these matters, please chime in and let us know your thoughts. If any of my statements are untrue, or you know otherwise, i am happy to be proven wrong. Ridiculous claims are 1 thing, but outright lies are another and Busettii deserve to be called out for this.
I am sorry, but there are several stretches of the truth in this description and 1 complete and utter lie. Stretching the truth a little is not so unusual for many sellers, but i find the lies about their wonder 16 fet controller to be a step too far.
I just do not understand what is going through someone's mind to make this claim and it makes me think they do not have much of a grasp of the technical details of such parts (and they are full of it too, IMPO only of course). For 1 thing, it is a 3 phase BLDC controller, and such controllers simply do not use 16 mosfets. The least fets that can be used is 6, then 9, 12, 15, 18 etc are normal configuration. So what, they tagged on another Mosfet, just for the hell of it, or they are counting maybe some small SMD parts on the PCB as an extra mosfet or 7? They found time to completely re-design the BBS02 between their busy schedule of running an Ebike store, or their buying power meant 8Fun gave them this wonder controller for their exclusive use?
The Fact is, the BBS02 25A controller uses 9pcs of TO-220 mosfets and has done so for close to 1 year, prior to that they used just 6. the housing had to be modified to fit 9 fets, and it is a tight fit.
It is normal practice to rate motors by their rated mechanical output power. The BBS02 is rated 750W output power at 48V, it uses a 48V 25A max, controller.
48V and 25A makes 1200W (48*25) max input power to the controller. The claimed 1300W max output power is coming from where? Coming out of where, the motor or the controller? Must be the controller, right?? Also they must be using higher than standard supply voltage voltage to make that figure? 52V and 25A makes 1300W max Input Power for example. Is 1300W max output power an accurate description? Maybe but they means 54.6V and 25A (charge voltage for a 13S battery). which means 1365W IP which could be ~1300W controller Output power, assuming 95% controller efficiency.
So, I Can't say 1300W Ouput Power is an outright lie, but it is a dishonest description IMO and very misleading. We supply 14S batteries with a 58.8V charge voltage. Would it be right to state the BBS02 has a max power input power of 58.8*25 = 1470W? Or maybe i could say the controller is 95% efficient and call the standard 48V 25A BBS02 ~1400W Output Power (at least for a brief moment on a fresh battery).
Maybe i am wrong, maybe everything they claim is true, but I'm sorry, i just can't see it. Anybody with some technical understanding on these matters, please chime in and let us know your thoughts. If any of my statements are untrue, or you know otherwise, i am happy to be proven wrong. Ridiculous claims are 1 thing, but outright lies are another and Busettii deserve to be called out for this.
Good to know that hasn't changed. :/
