Maximum Voltage on a 48 Volt Controller?

[Boyntonstu]

My 48 V controller has a LVC of 3.5 Volts average per cell.

I have no idea of it having a HVC.

Would the blue magic smoke come out at say 60 Volts?

As seen on this forum, one can run a 48 V hub motor at 72 V.

I want to go higher than 48 but if I buy a 72 Volt controller its LVC will be above 60 Volts.

Are there 20-30 A controllers with variable limits?

 

[Ykick]

Most 48V controllers will survive 63V.


Those must have 63V Electrolytic Capacitors which can be verified by opening the enclosure and visually check rating on the large capacitors.

 

[wesnewell]

If your 48V controller is paired with an LCD display, it will usually have a HVC of 60V limited by the display unit. Otherwise typical LVC voltages are 10.5V times (system voltage divided by 12) to accommodate SLA batteries. That puts a 72V controller lvc at 63V. Perfect for 18s rc lipo or 20-22s 18650 packs, depending on what cells yo use.