<It's supposed to be a Panasonic 'block' type battery. A similar battery <was used in the Portable+, and the service manual for that machine <clearly shows an assembly of 3 Cyclon cells. So it looks like either <could be used. The difference is they are both gelled electrolyte lead acid cells, No difference. Therefor the working voltages and charing conditions will be very similar. SCR based chargers like that will not work if the cells are open circuit or sulphated (high resistance failure). Allison