Does using a 52v battery with the 48v 750w BBS02 cause any long term problems? I'm about to pull the trigger on purchasing a complete system and I'm trying to decide between 48v and 52v. If the watt hours are similar between the 2 batteries is there any advantage one way or the other?
Question about using 52v with BBS02
- Thread starter Xray
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Raged
1 kW
It should be fine if the kit you are buying is using the upgraded FETs ( They switched mid July 2015 )
Ive been running 14s ( 58.8v ) on my BBS02 29er cyclocross fine with the new controller for about 4 months. The old controller popped if it was at the ege of its limits.
Ive been running 14s ( 58.8v ) on my BBS02 29er cyclocross fine with the new controller for about 4 months. The old controller popped if it was at the ege of its limits.
dilkes
100 W
Just wondering what that means "popped "? Did that render the controller unusable and needing repair? Or could it be reset by disconnecting /reconnecting the battery?Raged said:
Raged
1 kW
dilkes said:
Popped as in dead and get a replacement controller with the upgraded FET's.
Samd
10 MW
I run 62.0v HOC on 15s lipo on a vintage bbs02 - one fo the first made. Still going fine.
dogman dan
1 PW
What's 52v? They call 13s "48v" It charges to 54.6v. and they call 14s 48v, unless they call it 52v. it charges to 58v. Both are less than a typical 48v controllers max voltage for the capacitors inside, which is generally 63v.
So don't go above charges to 63v. Personally, I like 14s, but 13s is increasingly the standard, and the bafang is surely designed with the intent to run it at 13s.
So don't go above charges to 63v. Personally, I like 14s, but 13s is increasingly the standard, and the bafang is surely designed with the intent to run it at 13s.
Raged
1 kW
Oh... I was using a 48t chainring... which probably loaded it a bit too much as well.
puregsr
100 W
Just curious, I'm assuming you need to change the LVC when switching from 13S to 14S (41V to 43V), am I wrong?
Raged
1 kW
puregsr said:
Only when you go down in voltage. Your BMS should protect your battery before the LVC does.
tomjasz
1 GW
52t is fine to, unless you lug the motor, it's not the chainwheel it's the user.Raged said:
gridlok
10 W
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- Oct 18, 2014
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I have hundreds of hours of hard riding on BBS02's with 52v batteries (16S LifePo4). One blown controller early on, after that I got smart and used smaller chainrings.
Doesn't like full throttle on hills when it is already hot and spinning too slow. If you spin it fast you can beat the piss out of it with impunity.
All old Mosfets.
Karl
Doesn't like full throttle on hills when it is already hot and spinning too slow. If you spin it fast you can beat the piss out of it with impunity.
All old Mosfets.
Karl
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