---
product_id: 83943248
title: "M148A Battery Monitor 12V/DC. Protect Car Batteries from Deep Discharge. Automatically turns on after return to normal voltage. Shut-off voltage adjustable approx. 10.4-13.3V, 12 x 11 x 4 cm"
brand: "kemo"
price: "R2181"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/83943248-m148a-battery-monitor-12v-dc-protect-car-batteries-from-deep
store_origin: ZA
region: South Africa
---

# Adjustable 10.4-13.3V 20A max capacity Auto recovery feature M148A Battery Monitor 12V/DC. Protect Car Batteries from Deep Discharge. Automatically turns on after return to normal voltage. Shut-off voltage adjustable approx. 10.4-13.3V, 12 x 11 x 4 cm

**Brand:** kemo
**Price:** R2181
**Availability:** ✅ In Stock

## Summary

> 🔧 Power Up Your Peace of Mind!

## Quick Answers

- **What is this?** M148A Battery Monitor 12V/DC. Protect Car Batteries from Deep Discharge. Automatically turns on after return to normal voltage. Shut-off voltage adjustable approx. 10.4-13.3V, 12 x 11 x 4 cm by kemo
- **How much does it cost?** R2181 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/83943248-m148a-battery-monitor-12v-dc-protect-car-batteries-from-deep)

## Best For

- kemo enthusiasts

## Why This Product

- Trusted kemo brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **💡 Smart Recovery:** Automatically reactivates once normal voltage is restored, ensuring reliability.
- • **🌍 Eco-Friendly Design:** Contributes to a sustainable future by prolonging battery life.
- • **📏 Compact & Efficient:** Sleek dimensions (12 x 11 x 4 cm) fit seamlessly into any vehicle setup.
- • **⚙️ Customizable Control:** Easily adjust the shut-off voltage to suit your specific needs.
- • **🔒 Protect Your Investment:** Safeguard your car battery from deep discharge with smart technology.

## Overview

The M148A Battery Monitor by KEMO is a cutting-edge device designed to protect your car battery from deep discharge. With an adjustable shut-off voltage range of approximately 10.4 to 13.3V and a maximum switching capacity of 20A, this compact monitor (12 x 11 x 4 cm) ensures your battery remains in optimal condition. It automatically turns back on once normal voltage is restored, making it a reliable choice for any vehicle owner.

## Description

M148A This battery monitor protects your car battery from deep discharge by timely shutting off consumers such as cool boxes, heaters, radios, TVs, etc. It automatically switches on again after returning to normal voltage. The switch-off voltage is adjustable: approx. 10.4-13.3V Operating voltage: 12 V battery. Max. Switching capacity: 20 A (10 A without cooling, 20 A with additional cooling). Switch-off voltage: adjustable approx. 10.4 - 13.3 V. Restart voltage: approx. 0.8 V (± 0.3 V) higher than the set switch-off voltage. Shut-off element: power MOS transistor in the negative line. Inherent current consumption: <0.7 mA when off; <1.6 mA in on state (LED lights). Dimensions: approx. 87 x 60 x 33 mm (with mounting base).

## Features

- Protects car battery from deep discharge by timely switching off consumers
- Automatically turns on again after returning to normal voltage
- Adjustable switch-off voltage: approx. 10.4 - 13.3 V
- Max. Switching capacity: 20 A (with additional cooling)
- Shut-off element: power MOS transistor, in the negative line

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | KEMO |
| Size | 12 x 11 x 4 cm |
| Product Dimensions | 2.36"D x 3.43"W x 1.3"H |
| Number Of Cells | 6 |
| EU Spare Part Availability Duration | 1 Years |
| Manufacturer | Kemo |
| Global Trade Identification Number | 04024028031484 |
| Item Weight | 6.9 ounces |
| Item model number | M148A |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 1427335 |

## Product Details

- **Brand:** KEMO
- **Size:** 12 x 11 x 4 cm
- **Product Dimensions:** 2.36"D x 3.43"W x 1.3"H
- **Number Of Cells:** 6
- **EU Spare Part Availability Duration:** 1 Years
- **Manufacturer:** Kemo
- **Global Trade Identification Number:** 04024028031484

## Images

![M148A Battery Monitor 12V/DC. Protect Car Batteries from Deep Discharge. Automatically turns on after return to normal voltage. Shut-off voltage adjustable approx. 10.4-13.3V, 12 x 11 x 4 cm - Image 1](https://m.media-amazon.com/images/I/51hySF-lRqL.jpg)
![M148A Battery Monitor 12V/DC. Protect Car Batteries from Deep Discharge. Automatically turns on after return to normal voltage. Shut-off voltage adjustable approx. 10.4-13.3V, 12 x 11 x 4 cm - Image 2](https://m.media-amazon.com/images/I/51b9fiTzvUL.jpg)

## Questions & Answers

**Q: Starter motor for Diesel engines in boats draw a lot of current 250A is this appropriate for engine batteries?**
A: Good Day,

No, this produkt is only for 20amps designed.

Regards 
Offgridtec GmbH

**Q: Can I use this just to shut off battery when discharge drops V too low? How? Batt+ to device Batt+ "In" & Batt- to device Load- "Out"?**
A: The kemo m148a comes with instructions. Also some specs can be found with the item on-line. 
I will refer to the kemo m148a in the following response as 148.
The 148 max amp rating is 20 amps with the addition of a metal backing plate the can be easily added with a few tools. As shipped the 148 is rated for 10 amps. Remember this is 12 v dc current. Connect appropriate wire and appropriate fuse from battery 12 v + to the 148 and marked battery +. For the battery 12 v - repeat the process except for fuse installation. From 148 load + repeat the process to connect to the device + to be controlled by the by the 148. From 148 load - repeat the previous process. The voltage disconnect range can be adjusted up or down on the 148 marked as switch off adjustment. I had to adjust in very small increments. Turning power off to the battery charge controller and running 148  controlled device (in my case an ice box). I had to turn on the the battery charge controller and turn off several times until I had the 148 adjusted to disconnect at 12.8 v dc (in my case).

## Frequently Bought Together

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-20*