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I have not found one, that is why I got a 36v M820.
You need to have corresponding battery to your motor controller firmware. Firmware can be easily changed, battery not so easy.And it works well? Isn't there a problem with the Cut Off?
Battery 43V Cut off = 40.8V ( 3,4 V / cell)
Battery 36V Cut off = 34V (3.4V / cell)
Intuitively, I'd say that with a 36V you have an operating range that goes from 42V (Full charge) to 40V (Cutoff) and then it cuts off, right?
All LION batteries with the M820 will cutoff after 80% used. Nothing to do with the voltage of the battery.And it works well? Isn't there a problem with the Cut Off?
Battery 43V Cut off = 40.8V ( 3,4 V / cell)
Battery 36V Cut off = 34V (3.4V / cell)
Intuitively, I'd say that with a 36V you have an operating range that goes from 42V (Full charge) to 40V (Cutoff) and then it cuts off, right?
I know nothing of this company and I don’t understand Italian. But they do seem to build extender-kits for different ebike motors. Including 43V bafang.So my only option is to develop my own 43V battery extender. ..
Intuitively, I'd say that the nominal voltage and max current are hard-coded in the controller.There is no difference. Power is power. A 43v motor is not more "powerful" than a 36v motor. It is a myth.
The higher the voltage the lower the current required for a certain power level. That can allow a manufacturer to create a lighter motor with smaller conductors at the higher voltage. But that is the only difference and it is not clear if Bafang changes the size of the conductors for higher voltage motors. I doubt it.
Well, this is why the 36V firmwares have higher current than 43 and 48V. So the max power remains the same.Intuitively, I'd say that the nominal voltage and max current are hard-coded in the controller.
So if you take a 43V - 13A firmware -> 560 W
If you power it at 36V, the max current is alway 13A...
So your Pmax will be 36 x 13 = 468 W.
-> You lose 100W of nominal power on your motor... What do you think of this resonance? Wrong?
View attachment 136745
You mean you're running 43V with a 43V battery and when you plug in the battery extender with 36V nominal you load a new firmware into the motor?Well, this is why the 36V firmwares have higher current than 43 and 48V. So the max power remains the same.
No, even if that would work in theory, that is too complicated. You need to have same voltage on main battery, extender and firmware. Any one of the three options work.You mean you're running 43V with a 43V battery and when you plug in the battery extender with 36V nominal you load a new firmware into the motor?
Once again... You don't take into account the maximum current programmed in your controller. But I have my answer thanks @Freda360w is 360 w. As noted with 43 it is 8.37 amps and with 36v it is 10amps. So the 43v could have smaller wires that would be lighter, slightly. That would be the advantage of the higher voltages but does Bafang actually change the gauge of the wires in the motors or batteries? For lowest cost I would guess no. But the max current is different for the two motors in question.
I finally have a video up! It's not the best quality but I was racing an incoming snow storm and had to rush it.Is any one have a riding video for LCE930?
Nice! I wish I could talk my wife into doing trails like that. She went over the bars once and that was the end of trail riding.Had a shake out ride a week or so ago (snow came back since) but we went out and did 10km and where I would be stopping and waiting many times and cringing about my bad boyfriend trail choices, this time any time I looked over my shoulder she was right there! Going to be a great summer with this in the stable.
Short clip of her going up a steep rooty climb. This is the bottom of a G out that is much steeper than it looks...and she just charges up it.
New video by Chuck Tatham
photos.app.goo.gl
I hear ya.....I have to find the balance to keep the fear down....and she has had a few OTB's but powers on. She is an extreme sport gal from a lifetime of kiteboarding and wakeboarding....but some bad on water accidents has made her more cautious. At 56 and the combo of techy plus hard exertion at the same time was a blocker so this should REALLY help.Nice! I wish I could talk my wife into doing trails like that. She went over the bars once and that was the end of trail riding.
Ho my godYou can't program in max current. You can only limit it by clamping it. These are controlled by a pulse train to the speed controller. The motor is going to pull what it pulls at a certain assist setting based on the resistance of the windings. The only thing the controller is programmed to do is limit the assist level after the voltage drops to a trigger level.
I think it is no possible with besstDoes this security at 20% could be changed with besst ?
hello32 and 11/52 with 29", 11/50 with 27.5. I would used less if i could, 28 and reduced K7 rear (less cheaper and more light) , but with 104BCD spider it's impossible to mount less than 32
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