We have been selling these units for many years as they are a reliable, efficient charger that is a good value for your money. This unit is actually a constant voltage switching regulator. It can be used as a DC power supply with no batteries if desired. No special filters are required for radios and stereos. They operate at a wide range of input voltages and frequencies and still maintain full power output and constant voltage.
The DLS series converter/power supply meets FCC criteria, minimizing radio and television equipment interference, especially on the lower frequency bands.
Even in its subcompact size, the DLS series converter/power supply, at full load, has an operating temperature half that of some switch mode electronic models. This means substantially longer life and safer operation.
Proportional Fan Circuitry provides an extra measure of protection. During times of heavy load demands, the automatic circuitry will activate the fan before thermal stress can occur on any internal components. Reliability and durability is built into all DLS models.
In the event the batteries or the DLS unit is wired incorrectly, the DLS converter/power supply is protected from damage. External fuses can be quickly and easily replaced.
The DLS units feature a Two-Step Voltage Jack which allows switching from a long-term float voltage of 13.6vdc to 14.2vdc for rapid charging by simply inserting the dual voltage plug (included) into the jack. Also available with an IQ-4 smart-controller as an external unit which converts the charger into a 3-stage "smart" charger, increasing the performance of your DLS.