Peacefair PZEM-009 Battery SOC Power Capacity Meter for Lithium Iron Phosphate Battery & Ternary Lithium Polymer Battery

Features

Wide Voltage Range: DC 8V-100V

Real-Time Voltage Display

Battery Percentage Display (0-100%)

5-Level Battery Capacity Indicator

Adjustable Full & Cut-off Voltage

User Calibration Function

LCD Display On/Off Control

Splash-Proof Front Panel

Voltage Specifications

Feature Specification

Measurement Range DC 8V-100V

Accuracy ±1%

Voltage Display Format

Below 10V: 9.99V

10V-99.9V: 99.9V

100V and Above: OL

Battery Percentage Display Display Range: 0%-100%

Display Format

Below 10%: 9%

10%-99%: 99%

100%: 100%

Battery Capacity Indicator The LCD features a 5-bar battery icon, where each bar represents approximately 20% battery capacity.

Battery Level (SOC) Display

Above 90% All 5 bars displayed

80%-90% First bar flashes

60%-80% 4 bars displayed

60%-70% Second bar flashes

Lower Levels Remaining bars decrease accordingly

Functions LCD Display On/Off

Short press the button to turn the LCD display ON or OFF.

Adjustable Full & Cut-Off Voltage Set the battery's full voltage and cut-off voltage according to your battery specifications.

Factory Default Settings

Full Voltage: 60.0V

Cut-Off Voltage: 47.5V

Setup Instructions

Long press the button to enter the settings menu.

The display shows 60.0V H

H = Full Voltage

L = Cut-Off Voltage

Short press to adjust each digit.

Long press to save and exit.

Note: Voltage settings can be changed up to 50 times.

Calibration Function Each unit is factory calibrated, but manual calibration is also available.

Calibration Steps

Turn the meter OFF.

Press and hold the button while powering ON.

Apply a stable 20V DC reference voltage.

The display will show:

CAL → PASS

Calibration is complete once the normal display returns.

Waterproof Design The front panel includes an integrated sealing ring that provides splash-resistant protection after installation, making it suitable for everyday outdoor and vehicle applications.

Note: Waterproof protection applies to the front panel only and is intended for protection against light water splashes.

Package Includes

1 × LCD Battery Voltage & Capacity Meter