I came across the note on the last page of the instruction manual for the R&D GP1200R ECU, it says "only use Acid type batteries, do not use closed cell or gel type with the R&D ECU"

I have a nice SLA battery in the gpr now, is that going damage or reduce performance of the R&D ECU? SLA is sealed, not sure if they're implying 'sealed' when it says closed cell.