MEAN WELL NPB-450-12 450W 12V 25A Lead-Acid and Li-ion Smart Battery Charger

Unlike basic fixed-voltage chargers, the NPB-450-12 combines a 450 W output with programmable 2/3-stage charging and CANBus control, making it suitable for both lead-acid and Li-ion batteries in demanding industrial applications.

Highlights

• 450 W rated power with 12 V DC output and up to 25 A charging current
• Programmable 2/3-stage charging for flooded, GEL, AGM lead-acid and Li-ion (LiFePO4, LiMn2O4) batteries
• Built-in active PFC and 91% efficiency with wide AC input range (90–264 VAC)
• CANBus protocol interface for remote monitoring and control, programmable via SBP-001
• Comprehensive protections: short circuit, overload, over voltage, over temperature, and battery reverse polarity
• Built-in DC fan with speed control for reliable thermal management

In daily use

The NPB-450-12 operates from -30 °C to +70 °C, making it suitable for outdoor and unheated environments. The remote ON/OFF function and auxiliary 5 V / 0.5 A output add flexibility for system integration. Its metal case and screw terminal block ensure secure installation.

Full specifications

• Output voltage: 12 V DC
• Max output current: 25 A
• Rated power: 450 W
• Input voltage: 90–264 VAC (127–370 VDC)
• Efficiency: 91%
• Battery types: Lead-acid (flooded, GEL, AGM), Li-ion (LiFePO4, LiMn2O4)
• Charging stages: Programmable 2/3 stage
• Protections: Short circuit, overload, over voltage, over temperature, battery reverse polarity
• Operating temperature: -30 °C to +70 °C
• Cooling: Built-in DC fan with speed control
• Control interface: CANBus protocol, programmable via SBP-001
• Remote control: Remote ON/OFF function
• Auxiliary power output: 5 V / 0.5 A
• AC input connector: IEC320-C14 inlet
• DC output connector: Terminal block (screw type)
• Housing material: Metal case

Final note

The NPB-450-12 meets UL62368-1, TUV EN62368-1, EAC TP TC 004, and AS/NZS 62368.1 safety standards, with EMC compliance to EN55032 Class B and related standards.