Samlex America (SEC1215UL 15 Amp Battery Charger 2 or 3 stage charging (user selectable) - Commercial Grade 120 or 230 VAC, 50/60 Hz (user selectable) Voltage meter display  Ammeter and LED power status For all types of Lead Acid batteries - Use as a power supply or DC UPS Charge 3 banks of batteries at once  no isolator necessary