Power supply with battery charger Extralink SCP-35-12 13.8V 35W 12V metal housing, 100–240V AC input

Extralink SCP-35-12 is a compact buffer power supply with an integrated battery charger that delivers a DC output of 13.8 V and a rated power of 35 W. Housed in a perforated metal enclosure, it accepts an AC input of 100–240 V at 50–60 Hz and is intended to provide stable 12 V supply and battery buffering for telecom, CCTV and access-control equipment. Its small footprint (99 × 97 × 38 mm) makes it suitable for installations where space is limited while still offering adjustable output voltage and screw-terminal connections for reliable wiring.

Advantages

The metal casing with perforation improves airflow and passive cooling, supporting continuous operation in confined electrical cabinets. Integrated charging functionality allows connection of an external battery so that connected devices keep running during mains outages. Screw terminals are clearly marked to simplify installation and ensure correct wiring. A built-in potentiometer enables fine adjustment of the output voltage to match the requirements of different 12 V devices.

Suitable for

Key specifications

How to use

Mount the unit in a ventilated location and secure it according to local electrical regulations. Connect the AC mains to the marked screw terminals and attach the DC output wires to the receiving equipment. If a battery backup is required, connect a compatible external lead-acid or sealed battery to the designated battery terminals, observing correct polarity. Use the built-in potentiometer to fine-tune the output voltage to the required level for the connected devices. Verify all connections and test the system by simulating a mains failure to confirm battery takeover behavior.

Recommendations

Install the power supply in an environment free of excessive dust, moisture and heat. Ensure the battery used for backup is of the appropriate type and capacity for the load and is connected with correct polarity. Periodically inspect terminals for tightness and corrosion, and test battery performance to maintain reliable backup operation.