C-25 - Power Products Alpha C-25 – 25-Amp Aircraft Battery Charger

Yes. The Alpha C-25 is designed to charge one or two batteries of the same voltage rating simultaneously, up to a combined maximum of 25 amps. This makes it ideal for busy maintenance shops servicing multiple 12-volt or 24-volt aircraft batteries. Dual-output capability improves workflow efficiency without requiring a second charger.

The charger supports both constant potential (CP) and constant current (CC) charging modes. CP mode is typically used for sealed and vented lead-acid aircraft batteries, while CC mode is preferred for nickel-cadmium (NiCad) batteries. This flexibility allows maintenance technicians to follow manufacturer-recommended charging procedures for a wide range of battery types.

The built-in digital timer can be set from 0.1 to 999.9 minutes, allowing precise control over charge duration. This helps technicians meet battery CMM or ICA requirements without guesswork. The elapsed time display also provides clear documentation for maintenance records and quality control tracking.

The Alpha C-25 is compatible with 12- and 24-volt lead-acid batteries, including VRLA types, as well as 1- to 22-cell nickel-cadmium batteries. Its selectable voltage and charging modes make it suitable for general aviation, turbine aircraft, and support equipment batteries. Always follow the battery manufacturer’s maintenance manual for proper charging settings.

Yes. In constant potential mode, the end-of-charge voltage can be fine-tuned using front-panel trimpots. This allows technicians to verify or adjust voltage settings for 12V or 24V charging as needed. Such adjustability is useful when accommodating specific OEM battery requirements.

The digital voltmeter and ammeter provide high accuracy, with the voltmeter within ±0.3 volts and the ammeter within ±0.3 amperes. This level of precision supports consistent, repeatable aircraft battery servicing. Accurate monitoring is critical for preventing overcharging or undercharging.

The Alpha C-25 operates on either 115V or 230V AC, selectable on the rear panel. It is designed to operate within ±5% line fluctuation for stable operation. This dual-voltage capability makes it adaptable for hangar environments in domestic or international locations.

The charger should be placed on a sturdy workbench in a well-ventilated area for battery servicing. At least 6” of clearance is recommended behind the unit to maintain proper airflow for cooling fans. Adequate ventilation helps prevent overheating and extends equipment lifespan.

Calibration verification is recommended every 12 months, depending on usage and environmental conditions. The manual outlines procedures for verifying voltage and current using external, calibrated meters. Routine inspection of cables, connectors, and fuses further ensures safe, reliable operation.

Regularly inspect DC battery cables, keep cooling fan vents clean, and replace fuses as required. The unit includes both AC and DC line fuses to protect internal components. Keeping the charger in a clean, dust-free environment will improve cooling efficiency and overall reliability.