Charging batteries

The power supply can be used to charge lead-acid batteries or maintenance-free batteries (SLA or VRLA batteries). Two 12 V batteries connected in series are required.

Instructions for charging batteries:

• Use only matched batteries when putting 12 V types in series.
• Ensure that the ambient temperature of the power supply stays below
• +40°C for mains voltage of AC 120 V or higher and
• +35°C for a mains voltage of AC 100 V.
• Use a 15 A or 16 A circuit breaker or a decoupling diode between the power supply and the battery.
• Ensure that the output current of the power supply is below the allowed charging current of the battery.
• The reverse current to the power supply is typically 3.5 mA. This reverse current can discharge the battery when the power supply is switched off, unless a decoupling diode is used.
• Switch the device to "Parallel Use" mode and adjust the output voltage, measured at no load and at the battery end of the cable, very precisely to the end-of-charge voltage.