Re: Desulfator question
The only solid evidence of desulphator action we've seen around here is that they screw up certain MPPT charge controllers. Notably my favourite Outbacks.
The theory is that the pulsed frequency dislodges the sulphur from the plates. There is some evidence that PWM charge controllers do have a positive effect in this manner. In that respect one would expect that the size of the battery bank would matter.
Proving whether or not desulpators work is practically impossible, as no two batteries are exactly alike. As far as preventing sulphation, proper charge technique works. As for reversing sulphation ... Good luck with that no matter how you try it. By then the battery has internal damage any way.
Save your money.
1220 Watts of PV, OB MX60, 232 Amp hrs, OB 3524, Honda eu2000.
Ohm's Law: Amps = Volts / Ohms
Power Formula: Watts = Volts * Amps