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XH-M609 DC Voltage Protection Module — 6–60V Undervoltage Cutoff for Lithium Battery
XH-M609 DC Voltage Protection Module 6–60V Undervoltage Cutoff for Lithium Battery
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XH-M609 DC Voltage Protection Module — 6–60V Undervoltage Cutoff
The XH-M609 DC voltage protection module automatically disconnects a load from a battery when the battery voltage drops below a user-set threshold, preventing damaging over-discharge. With an adjustable cutoff range covering 6V to 60V, it protects lithium-ion, LiFePO4, lead-acid, and NiMH battery packs in solar storage systems, electric vehicles, UPS units, and DIY battery-powered projects. A relay output switches the load circuit; the module itself draws minimal standby current.
Key Specifications
| Parameter | Value |
|---|---|
| Model | XH-M609 |
| Input Voltage Range | 6V – 60V DC |
| Undervoltage Cutoff | Adjustable via onboard potentiometer |
| Reconnect Voltage | Adjustable (hysteresis above cutoff threshold) |
| Output | Relay contact (NO/NC/COM) |
| Max Relay Current | 10A (resistive load) |
| Display | LED indicator (protection active) |
| Compatible Batteries | Li-ion, LiFePO4, Lead-acid, NiMH |
| Origin | CN |
How It Works
- Monitor — The module continuously monitors battery terminal voltage
- Cutoff — When voltage drops below the set threshold, the relay opens and disconnects the load
- Reconnect — When voltage recovers above the reconnect threshold (cutoff + hysteresis), the relay closes and restores power to the load
- Hysteresis — Prevents rapid relay cycling near the cutoff voltage; set via second potentiometer
Typical Applications
- Solar battery storage system over-discharge protection
- 12V / 24V lead-acid battery low-voltage disconnect for caravans and boats
- Lithium battery pack protection in e-bike and scooter conversions
- UPS and backup power system battery protection
- DIY battery-powered project automatic shutoff
- Golf cart and electric vehicle battery protection
Frequently Asked Questions
Q: Can I use this to protect a 48V lithium pack?
Yes. The 6–60V input range covers 48V nominal lithium packs (fully charged ~54.6V for 13S Li-ion). Set the cutoff voltage to your pack’s minimum safe discharge voltage (e.g., 42V for 13S Li-ion at 3.2V/cell).
Q: What is the maximum load current?
The onboard relay is rated for 10A resistive load. For loads above 10A, use the relay output to switch an external contactor or SSR rated for your load current. Do not exceed the relay rating directly.
Package Contents
- 1× XH-M609 DC Voltage Protection Module
