I have browsed multiple threads and fail to find an answer to my questions - we are attempting to build our own battery for the gen 2. Being that space is limited in the housing, we are trying to determine the best bms for situation. Do we need discharge? It appears that this feature increases the size of the bms substantially. Does the foil drive have something in the housing that handles the discharge? Can anyone confirm that discharge just keeps the battery from going too low? Anyone have suggestions for a bms? I understand this is a lot of questions - I have researched and read and I’m going cross eyed.
Every esc has a voltage cutoff limit abd the remotes tell you battery level. No need for a discharge bms.
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As mentioned the esc has a setting to prevent the battery from discharging below a specified voltage.
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Sorry for potential ‘dumb question’. But can you explain the difference between the cutoff start and end?
To me Cutoff means from on to off. But this rather looks like there is a range where this will occur. Like based on what would I set these values?
Cutoff END is when the VESC sees the value you have set and STOPS. This is the value that protects your battery from going below its low voltage value. IMO this should be set to be greater than the manufactures spec.
Cutoff START is when the VESC sees the value you have set and REDUCES power.
The range between the two values allows you some time under power to return to safety. Perhaps not enough power to foil, most likely not enough power to get up on foil.
Good idea is to create a safe situation to know how much time and what capabilities you have during the reduced power period.
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Thank you all for the info - very helpful. I will update as I move forward.