12V 50A Sour Battery Charger – MA-1250A | Advanced AGM/GEL Four-Phase Charger
The MA-1250A 12V 50A Battery Charger is a powerful and intelligent solution designed specifically for AGM and GEL batteries. Engineered with a four-phase charging mode, this charger not only delivers fast and efficient charging but also ensures long battery life and enhanced safety. Ideal for automotive workshops, battery service stations, and serious DIY users, this unit is compact, reliable, and ISO/CTA/CE certified for quality and safety.
Specifications:
Model: MA-1250A
Output Voltage: 12V
Input Voltage: 180V–250V
Rated Frequency: 47–63Hz
Charging Current: 50A
Charging Mode: Four-step automatic (Pre-charge, Constant Current, Constant Voltage, Floating)
Full Load Efficiency: >90%
Dimensions: 225 × 145 × 80 mm
Net Weight: 1.6 kg
Packed Quantity: 12 units per carton
Certifications: ISO, CTA, CE
Four-Phase Intelligent Charging Process
Pre-Charge Mode:
Automatically initiates a gentle charge when the battery’s voltage is low or internal resistance is high—ideal for deeply discharged or long-unused batteries. This stage protects and revives the battery.
Constant Current Mode:
Supplies a steady current to recharge the battery efficiently during its bulk charging phase.
Constant Voltage Mode:
Utilizes PWM (Pulse Width Modulation) to regulate the voltage and prevent overcharging while ensuring the battery reaches full capacity.
Floating Charge Mode:
When the battery is fully charged, the charger switches to a low-voltage maintenance mode. A green indicator light illuminates, the fan stops, and the battery can either be disconnected or left in floating charge for continued protection.

Whether you're charging batteries in your garage or servicing vehicles professionally, the MA-1250A 12V 50A Charger delivers reliability, intelligent control, and powerful performance in a compact design.