[cricketo]

48v is what we consider nominal voltage - voltage of the battery pack when it's charged to 50% of its capacity. When fully charged, it will be above that voltage. When it's towards full depletion, it will be below.

For NMC cells, nominal voltage is 3.7 and max is 4.2. So 14s pack will have nominal of 51.8, max of 58.8.

For Lead-Acid nominal voltage is 2v, max is 2.1v (12.7v for standard battery), so 48v is the nominal for 4 in series (24 cells), 50.8 is max.

So in the end you're only some 6 volts above of what your LA setup would have been, and whether that is permissible for controller... depends on the controller. Pull up the spec sheet for that Altrax, and check what it is.

My "buggy" is also 48v, with 48v Sevcon Gen4. That Sevcon allows for up to 69v of input voltage though, and I run a 60v configuration, with pack charging to 65.8v.