Keszoox

DC 12V Battery Undervoltage Low-Voltage Cut-Off Protection Module with Auto Recovery

$23.48 USD

Save Liquid error (snippets/price line 138): divided by 0% Sold out

Taxes included. Shipping calculated at checkout.

Color

Quantity

DC 12V Battery Undervoltage Low-Voltage Cut-Off Protection Module — Auto Recovery

This 12V battery undervoltage protection module monitors battery voltage and automatically disconnects the load when voltage drops below a set threshold, preventing deep discharge damage to lead-acid, Li-ion, and LiFePO4 batteries. When the battery recovers (via charging), the module automatically reconnects the load — no manual reset required.

Key Specifications

Parameter	Value
Input Voltage	DC 12V (10V – 14V operating range)
Cut-Off Threshold	Adjustable (typically 10.5V–11.5V for 12V lead-acid)
Recovery Threshold	Adjustable (typically 12.5V–13V)
Output	Relay contact (NO/NC/COM)
Max Load Current	10A–30A (depends on relay rating)
Quiescent Current	<10mA (module self-consumption)
Auto Recovery	Yes — reconnects load when battery voltage recovers
Indicator	LED (power on / protection active)

Why Choose This Module?

Prevents Deep Discharge — Extends battery life by preventing voltage from dropping below safe minimum
Auto Recovery — Automatically reconnects load after charging; no manual intervention needed
Relay Output — Switches high-current loads (up to 30A) without additional components
Adjustable Thresholds — Set cut-off and recovery voltages for different battery chemistries
Low Self-Consumption — <10mA quiescent current minimizes battery drain from the module itself

Recommended Threshold Settings

Battery Type	Cut-Off Voltage	Recovery Voltage
12V Lead-Acid (SLA)	11.0V – 11.5V	12.5V – 13.0V
12V LiFePO4 (4S)	11.2V – 11.6V	13.0V – 13.6V
12V Li-ion (3S)	9.0V – 9.6V	11.0V – 12.0V

Typical Applications

Solar energy storage system battery protection
12V lead-acid battery deep discharge prevention (UPS, backup power)
Electric vehicle and e-bike battery protection
Off-grid cabin and RV battery management
12V Li-ion battery pack over-discharge protection
Automatic load disconnect for battery-powered systems

FAQ

Q: Does this module work with 24V battery systems?
A: This module is designed for 12V systems. For 24V, use a 24V-rated undervoltage protection module.

Q: Can I use this to protect a LiPo battery?
A: Yes, but set the cut-off threshold appropriately for your LiPo cell count. A dedicated BMS is recommended for LiPo packs for full protection (overcharge + overdischarge).