PowMr 140A 48V MPPT Solar Charge Controller with 6500W Input, 450V Max PV, for Lithium & Lead-acid Batteries

Overview

The PowMr POW-48140A is a high-capacity 140A 48V MPPT solar charge controller built for demanding off-grid and hybrid energy systems. Supporting up to 6500W solar input and an ultra-wide 60–450V MPPT voltage range, it reduces wiring complexity while delivering exceptional energy harvest. With a max conversion efficiency of 99% and tracking efficiency of 98%, this controller ensures optimal solar utilization with full system safety protections.

Key Specifications

Battery Compatibility

Compatible with various 48V battery types, including:

• Lithium-ion (LiFePO4, Li(NiCoMn)O2)

• Lead-acid (GEL, Flooded, Sealed)

• Custom-defined charging profiles

Advanced digital control ensures safe, precise, and adaptive charging.

Charging Technology

The POW-48140A applies a 4-stage smart charge cycle:

• Bulk → Absorption → Float → Equalization

• Battery equalization removes stratification and sulfation

• Ensures extended battery lifespan and full charge saturation

Safety and Protection

• Reverse polarity & reverse current protection

• PV over-voltage & load short-circuit protection

• Battery overcharge/discharge protection

• Over-temperature protection (>70°C)

• Fan fault and bus under-voltage alerts

• Real-time LCD fault codes for easy diagnostics

Installation & Configuration

• Recommended for up to 26×250W panels (13S2P configuration)

• Wire size: 1 × 12AWG / 4mm²

• Max torque: 1.2 Nm

• Integrated LCD screen with parameter customization and real-time monitoring

Ideal Applications

• Residential and commercial off-grid solar

• Telecom base stations & surveillance towers

• Remote cabins, battery banks, and hybrid systems

• Compatible with Reolink, Renogy, Jinko, and LONGi panels etcs.

• POW-48140A User Manual

Details

PowMr 140A 48V MPPT Solar Charge Controller, 6500W max power, 60V-450V range, 140A charging current.

PowMr 140A 48V MPPT Solar Charge Controller supports GEL, FLD, SLD, LFE, USE, LI batteries. Display indicates charging status.

PowMr 140A 48V MPPT Solar Charge Controller with multiple protection.

Battery Equalization illustrates three stages of charging: Bulk, Absorption, and Float. The Bulk phase rapidly charges the battery to a set voltage. Absorption maintains this voltage for full charge. Float keeps the battery charged at a lower voltage. Equalization periodically applies high voltage to balance cell voltages, enhancing performance and lifespan. Diagrams depict voltage levels over time, highlighting Equalize Charging Timeout and phases like BULK, ABSORPT., FLOAT, and EQUALIZE. This process ensures optimal battery health and efficiency in solar charge controllers.

PowMr 140A 48V MPPT Solar Charge Controller, 99% efficiency, 98% PV utilization.