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Two small rectangular green circuit boards with digital displays and terminal blocks

Generic Logic, Inc.

Generic Logic, Inc. DC Voltage Protection Module 12V-36V Pack of 2

SKU CH-KSSD-5RRM4

Pack of two DC 12-36V protection modules with adjustable over-discharge cut-off and relay switching for lead-acid or lithium batteries

  • Prevents battery over-discharge with automatic disconnect at preset voltage
  • Restores factory defaults by holding both buttons during power-on
  • Switches loads via relay without altering supply voltage
  • Operates from 12 V to 36 V DC input range
  • Draws less than 1.5 W while monitoring battery state

DC Voltage Protection Module 12V-36V

This pack contains two DC voltage protection modules designed to guard lead-acid, lithium-ion or solar panel batteries against over-discharge. Each unit acts as a relay-based switching module that disconnects the load when voltage falls below a user-set threshold. It is intended for hobbyists, off-grid installers and technicians who need adjustable low-voltage cut-off for 12 V to 36 V battery banks.

Installation and common issues

The module measures 4.33 x 3.94 x 0.59 inches and connects in-line between the battery and the load using screw terminals. Power the board, then use the two onboard buttons to set the disconnect voltage and the hysteresis value; the default is 12 V disconnect with a 2 V difference. A factory reset is performed by holding both buttons while powering on until the display shows 888. Wiring the relay contacts backwards or exceeding the rated input range are the most frequent causes of failure.

Capacity and headroom

The controller operates from 12 V to 36 V DC with a stated accuracy of ±0.1 V and draws less than 1.5 W itself. It cleanly handles the voltage monitoring and switching for compatible battery chemistries within that window. It is not suitable for battery packs or for applications that require voltage conversion, current regulation or charging functions, so those needs must be met by separate equipment.

Highlights

  • Prevents battery over-discharge with automatic disconnect at preset voltage
  • Restores factory defaults by holding both buttons during power-on
  • Switches loads via relay without altering supply voltage
  • Operates from 12 V to 36 V DC input range
  • Draws less than 1.5 W while monitoring battery state

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the module is protecting my battery after installation?

Power the unit and check the digital display; it shows real-time voltage with ±0.1V accuracy and will cut output when the battery reaches the preset disconnect threshold, then reconnect once voltage rises by the configured difference value.

What comes in the pack and what must I supply myself?

The pack includes two protection modules measuring 4.33 x 3.94 x 0.59 inches each; you must provide a DC 12-36V power source and compatible lead-acid, lithium-ion or solar panel batteries, as no batteries are included.

Which preset should I choose for a 12V battery system?

The factory default is a 12V protection value with a 2V difference value, suitable for 12V lead-acid, lithium-ion or solar panel batteries; adjust via the buttons if your application requires a different disconnect threshold within the 12-36V input range.

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