LyonNightroad
100 W
- Joined
- Feb 13, 2014
- Messages
- 105
So a question had been bugging me for a while. Why did my original BBS02 controller draw 30 amps. And why has my bike felt like a bit of a dog ever since I got my replacement controller that draws 25 amps. I managed to go about 1500 miles on the original controller. I frequently rode at max amps for 10 miles straight easily going 32 mph (Now its hard to get up to 30). I finally think I found the answer:
" -Paul EM3EV
The early bbs02 6 fet controllers (roughly early to mid 2014, but don’t quote me) could only be programmed to 20a max, but they would add some solder to the shunt, to up the current to typically about 28a.
If you measure the current with a CA or wattmeter, i think it will confirm this.
the 36v controllers don’t seem so easy to pop a fet as the 48v models.
"
So if anyone else has found themselves wondering the same thing, I think this is the answer.
" -Paul EM3EV
The early bbs02 6 fet controllers (roughly early to mid 2014, but don’t quote me) could only be programmed to 20a max, but they would add some solder to the shunt, to up the current to typically about 28a.
If you measure the current with a CA or wattmeter, i think it will confirm this.
the 36v controllers don’t seem so easy to pop a fet as the 48v models.
"
So if anyone else has found themselves wondering the same thing, I think this is the answer.