HK88PV Solar PV Module Maximum Power Tester is a portable instrument designed to evaluate the electrical output of photovoltaic panels. It measures open-circuit voltage, short-circuit current and maximum output power, helping users quickly assess whether a solar module is operating within its expected range.

With measurement capacities of up to 150V, 20A and 2200W, the tester is suitable for a wide selection of residential, commercial and off-grid PV modules. Its backlit LCD makes readings easy to view, while data hold, maximum-value capture and relative measurement functions support practical field inspections and comparative testing.

The unit automatically selects the appropriate measurement range and restricts input when the rated limit is exceeded. An OL indication alerts the operator to an over-range condition, adding an extra layer of protection during testing. Powered by two standard AA batteries, the compact HK88PV is convenient to carry between installation and maintenance sites.

Features

Three Essential PV Measurements

Check open-circuit voltage, short-circuit current and module maximum power using one compact testing instrument.

Up to 2200W Testing Capacity

The dual-range power measurement design covers modules from 5W to 2200W, accommodating both lower-output panels and high-power PV equipment.

150V and 20A Input Capability

Measure solar module voltage up to 150V and short-circuit current up to 20A for efficient on-site performance checks.

Automatic Range Selection

The AUTO function selects a suitable measuring range, simplifying operation and reducing manual adjustment during fieldwork.

Over-Range Input Protection

When the incoming value exceeds the rated capacity, the tester restricts entry into the measuring circuit and displays an OL warning.

Backlit LCD Display

The illuminated screen supports convenient reading in equipment rooms, shaded areas and changing outdoor light conditions.

Data Hold and MAX Functions

Freeze a measurement on the display or capture the highest detected value for easier recording and comparison.

Relative Measurement Mode

Compare the current reading with a reference value to identify differences between solar modules or repeated test results.

Portable, Battery-Powered Design

The lightweight meter weighs approximately 259g and operates on two 1.5V AA batteries, making it practical for mobile PV inspection work.

Automatic Power-Off

The meter shuts down automatically after inactivity to help reduce unnecessary battery consumption.

Technical Specifications

Application 

Solar Panel Installation

Verify a module’s electrical output before it is connected to an inverter, charge controller or battery storage system.

PV System Commissioning

Check newly installed panels during system handover to identify modules with unusual voltage, current or power readings.

Routine Solar Maintenance

Use the tester during scheduled inspections to compare present measurements with previous records or expected module performance.

Incoming Product Inspection

Test photovoltaic modules after delivery and before installation to help detect transportation damage or inconsistent output.

Module Comparison and Sorting

Compare several panels under similar sunlight conditions and group modules according to their measured electrical characteristics.

Off-Grid System Servicing

Evaluate panels used in cabins, RV systems, marine power equipment, agricultural installations and remote monitoring stations.

Troubleshooting Reduced Output

Measure individual modules when a solar array produces less energy than expected, helping technicians narrow down the source of a performance issue.

Training and Demonstration

Demonstrate the relationship between sunlight conditions and solar module voltage, current and power in laboratories or technical training environments.