| Battery Voltage | P1 (Lower Limit) | P2 (Upper Limit) | | :--- | :--- | :--- | | 6V Lead-Acid Battery | 6.0V | 7.2V | | 12V Lead-Acid Battery | 10.8V | 14.4V | | 24V Lead-Acid Battery | 24.0V | 28.8V | | 36V Lead-Acid Battery | 36.0V | 46.8V | | 48V Lead-Acid Battery (Up to 40V) | 48.0V | 57.6V |
Before wiring your circuit, ensure your project falls within the strict operational thresholds of the board: Specification Details XH-M608 / HCW-M631 Input Voltage Range DC 6V to 40V Voltage Display Accuracy Control Precision Maximum Relay Current 10A (Recommended up to 8A for continuous inductive loads) Supported Battery Types Lithium-ion, LiFePO4, Lead-Acid, Polymer packs Physical Dimensions 65mm x 46mm x 16mm Terminal & Hardware Layout Overview
Route the from your external battery charger directly into the COM (Common) relay port.
Furthermore, the manual serves as a tutorial for navigating the module’s interface, which is the heart of the user experience. The XH-M608 is equipped with a three-digit LED display and three tactile buttons, but their functions are far from intuitive without guidance. The manual elucidates the process of setting the "Start" and "Stop" voltage thresholds—the critical trigger points that determine when the relay engages or disengages. It guides the user through the programming sequence, explaining how to enter setup mode, adjust values using the up and down keys, and save parameters with a long press. This section of the manual transforms the board from a static collection of components into a dynamic tool capable of intelligent decision-making.
The XH-M608 is a compact battery charge/discharge protection board used as a fully automatic control unit for battery management. It is designed for DC systems ranging from 6V to 40V. It can be used as a battery charge controller to prevent overcharging, a discharge protector to prevent deep discharge, or simply as a high-precision voltmeter. Xh-m608 Manual
Sets the voltage at which the relay deactivates.
The module continuously monitors the voltage at its VIN terminals and compares it against user-programmed thresholds (P1 = lower limit, P2 = upper limit). Based on the selected mode (P0), it controls the relay state to either connect or disconnect a charger or load.
Pass the running to your load through the module’s relay contacts. The board breaks the connection when the battery drops below your safety limit. Programming & Menu Parameters
[Live Voltage Screen] ──(Short Press SET)──> [P0 Menu] ──(ADD/DEC)──> [P1 / P2 / P3] │ (Short Press SET) │ ▼ [Configure Parameters] Parameter Code breakdown Parameter Name Factory Default Adjusting Range Functional Description Operating Mode U, P, C, D | Battery Voltage | P1 (Lower Limit) |
The is a highly versatile, programmable voltage protection board designed to safeguard and manage DC 6–40V battery setups. Featuring an integrated digital voltmeter, precise sub-menu controls, and an on-board relay, it serves multiple functions: an overvoltage/undervoltage safety cutout, an automated battery charger controller, and a time-controlled discharge switch.
Enables or disables independent clock countdown limits for specific charge/discharge runs. Detailed Step-by-Step Programming Guide 1. Choosing the System Operating Mode (P0)
Are you using this for or load discharging ?
Dual-stage Overvoltage Protection (OVP) and Undervoltage Protection (UVP). The manual elucidates the process of setting the
: Features three terminal points— Common (COM) , Normally Open (NO) , and Normally Closed (NC) . Because it uses a "dry contact" architecture, the relay does not output voltage on its own; it behaves like an automated inline toggle switch.
Use to raise the voltage target or DEC to lower it. Hold down either button to quickly jump through values.
: Acts as an inline automated switch for your charging source or output load. Wiring Instructions