The AMT12-12-5 is used on systems with a 12V Auxiliary / Leisure battery which is required to maintain a 12V Vehicle / Source battery which has a high parasitic load.
PACO 7 STAGE AUTOMATIC BATTERY CONDITIONER MAINTENANCE CAR CHARGER 5AMP 12V BEC
Electronic Battery Trickle Charger 6/12v 100AH 2/5Amp Automatic Intelligent
Vintage Davenset Junior Battery Charger 6 or 12v (1.5amp)
Heavy Duty Battery Charger Portable 5Amp 12V Cars Vans SUVs Motorbikes
Adamy 12v Car Bike Caravan Battery Charger 5Amp Professional Metal Case XS500+M
Smart Battery Charger for Car Van Caravan Motorhome Boat Motorbike 12V 5Amp AGM