Just to clarify one point, which seems to come up with regards to long term use of battery chargers:
Leaving it long term on a float charge causes stratification of the electrolyte on a lead acid battery and this whilst it's in its most acidic fully charged state causing plate errosion. Some sophisticated chargers are programmed to run the multi stage charge cycle every 15 days ago causing electrolyte to be stirred to offset stratification. You can of course simply cycle your charger off then on to provide same every couple of weeks.
Ctek chargers, such as the one you mention (MX 5.0), have: 'maintenance pulse charging (Float/Pulse) - Once the battery is fully charged, the charger switches to a pulse mode. It allows the battery to drain slightly and then sends a pulse of charge to keep it at optimum levels.'
In short, this means these 'smarter' modern chargers are designed to be 'connect and forget' over longer periods of time because they are not charging constantly and allow the battery to drop and then charge it back to 95-100%, before starting the process again.
MMC used to supply Banner battery chargers but I am not sure if that relationship is still in place and I couldn't see them showing on the list of Banner OE companies.
Like Luddite, I use the MX 5.0 and have found them to be excellent.
