[ Battery + ] -------------> [ Vin + ] [ Vout + ] --------> [ Load + ] [ Battery - ] -------------> [ Vin - ] [ Vout - ] --------> [ Load - ]
: Dual-purpose terminals that power the onboard logic chip while actively measuring the battery's live voltage.
The XH-M608 is a multifunctional automatic charge and discharge control module designed for . It features an intelligent voltage comparator that automatically connects the battery to a charger when the voltage drops too low, and disconnects it once full charge is reached. This prevents over-discharging and over-charging, significantly extending battery life.
1. Smart Charger Control Configuration (Overcharge Prevention)
Here's a detailed breakdown of its specifications: Xh-m608 Manual
The module supports four primary operating modes, selectable via the parameter: Relay Logic U (Voltmeter) Displays current voltage only. Relay stays P (Protection) Voltage range protection. only within the set range. C (Charging) Automated battery charging. Relay turns at lower limit and at upper limit. F (Discharging) Automated battery discharging. Relay turns at upper limit and at lower limit. Programming Guide To configure the module, use the Enter Menu: Long-press the button to enter parameter selection. buttons to scroll through parameters (P0–P4). Adjust Values: Short-press to select a parameter, then use to change the value. Long-press or wait 5 seconds for the module to save and exit. Parameters Defined: Lower voltage limit (e.g., 10.5V for a 12V battery). Upper voltage limit (e.g., 14.4V for a 12V battery). Timer (minutes). Set to
Are you using this for or load discharging control ? What is your specific system voltage (e.g., 12V, 24V, 48V)? Share public link
| Battery System | Nominal Voltage | P1 (Lower Limit) | P2 (Upper Limit) | Application | |----------------|-----------------|------------------|------------------|--------------| | Lead-Acid 6V | 6V | 5.5V - 6.0V | 7.0V - 7.2V | Small UPS, lighting | | Lithium-Ion (2S) | 7.4V | 6.0V | 8.4V | 2-cell Li-Po/Li-Ion | | Lead-Acid 12V | 12V | 10.5V - 11.0V | 14.2V - 14.8V | Cars, solar, general use | | Lithium-Ion (3S) | 11.1V | 9.0V | 12.6V | 3-cell Li-Po/Li-Ion | | Lead-Acid 24V | 24V | 21.0V - 22.0V | 28.4V - 29.6V | Trucks, forklifts | | Lithium-Ion (4S) | 14.8V | 12.0V | 16.8V | 4-cell Li-Po/Li-Ion | | Lead-Acid 36V | 36V | 31.5V - 33.0V | 42.6V - 44.4V | Golf carts, e-bikes | | Lead-Acid 48V | 48V | 42.0V - 44.0V | 56.8V - 59.2V | UPS systems, solar | | Lead-Acid 72V | 72V | 63.0V - 66.0V | 85.2V - 88.8V | Industrial EVs |
Behavior: The module allows the load to run continuously until the battery voltage falls to your low cutoff limit, instantly breaking the circuit to isolate and save the cells. The Master Function Matrix (P0 – P3 Settings) [ Battery + ] -------------> [ Vin +
Connects to the positive terminal of the load (in discharge mode) or the battery (in charge mode).
The following parameters can be programmed:
Voltage calibration. Used to correct minor discrepancies in the display vs. actual voltage. Wiring Overview Input (Power):
Relay stays closed only when the voltage is between the lower (P1) and upper (P2) limits. Relay stays P (Protection) Voltage range protection
A 3-pin configuration providing access to the Single Pole Double Throw (SPDT) relay internal contacts. These contacts are completely isolated from the board's internal operating voltages , allowing you to control external power sources up to 220VAC or discrete DC loads safely. Standard Wiring Configurations
| Parameter | Default Mode (U) | Adjustable Range | Description | |-----------|-----------------|------------------|-------------| | P0 | U | U, P, C, F | Operating mode selection | | P1 | Lower voltage | 0V < P1 < P2-0.1V | Under-voltage threshold | | P2 | Upper voltage | P1+0.1V ≤ P2 ≤ 40V | Over-voltage threshold | | P3 | 0.00 | 0.00 to 9.59 | Timer (HH.MM format) | | P4 | Factory calibrated | n/a | Voltage display calibration |
Lights up when the relay is closed (power is flowing). Turns off when the relay opens. Operating Modes: Charging vs. Discharging