DC DC step up converter with Square Wave input

[AlgoryThm]

Hello! Well, I have a moped with a charging system that barely gives 13V at idle rpm and goes up to 13.2V at full rpm. The consequence of this is that the battery charges very slowly and I end up being stuck with a dead battery quite often, since the discharge rate is much higher than charging rate. Instead of replacing the whole rectifier, can I use a cheap DC-DC step up converter to provide the battery with constant 13.8V-14V from a 13V-13.2V input? If it was pure DC I wouldn't ask this question, but the output signal of the rectifier is something like a chopped AC, it looks more like square wave output.

[Terry Bites]

Get the charging system fixed properly- you may find there's an adjustment in the regulator. Or just find a replacement. A boost converter is not the solution.

[AlgoryThm]

Hmm this is sad since I have to work a lot more on the moped than I first thought. But just for the sake of argument, in general can I use pulsed wave input to a DC DC converter?