---
product_id: 41962378
title: "Car Voltage Stabilizer, 4A 48W Heavy Duty 12v Voltage Regulator Surge Protector for Car Battery Truck Vehicle Boat RV Camper Solar System (10-36V Input, 12V Output)"
brand: "cocar"
price: "B/.86"
currency: PAB
in_stock: true
reviews_count: 13
category: "Cocar"
url: https://www.desertcart.com.pa/products/41962378-car-voltage-stabilizer-4a-48w-heavy-duty-12v-voltage-regulator
store_origin: PA
region: Panama
---

# Stable 12V 4A output Overheat & surge protection IP67 waterproof & rugged Car Voltage Stabilizer, 4A 48W Heavy Duty 12v Voltage Regulator Surge Protector for Car Battery Truck Vehicle Boat RV Camper Solar System (10-36V Input, 12V Output)

**Brand:** cocar
**Price:** B/.86
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up with confidence—stabilize your ride, protect your tech!

## Quick Answers

- **What is this?** Car Voltage Stabilizer, 4A 48W Heavy Duty 12v Voltage Regulator Surge Protector for Car Battery Truck Vehicle Boat RV Camper Solar System (10-36V Input, 12V Output) by cocar
- **How much does it cost?** B/.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/41962378-car-voltage-stabilizer-4a-48w-heavy-duty-12v-voltage-regulator)

## Best For

- cocar enthusiasts

## Why This Product

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

## Key Features

- • **Compact Powerhouse:** Slim, lightweight design with a 12cm wire length for effortless installation in tight spaces—no bulky setups required.
- • **Versatile Compatibility:** Ideal for cars, trucks, RVs, boats, campers, and solar systems—join the savvy pros who never compromise on power quality.
- • **Ultimate Device Guardian:** Integrated safeguards against over-voltage, under-voltage, overload, overheating, and short circuits protect your sensitive electronics.
- • **Built to Brave the Elements:** IP67-rated waterproof alloy housing sealed with heat-conductive silica gel ensures durability in the harshest outdoor environments.
- • **Rock-Solid Voltage Stability:** Delivers a consistent 12V 4A output from a wide 10-36V input range, perfect for all your vehicle and solar power needs.

## Overview

The Car Voltage Stabilizer by Cocar is a heavy-duty 12V DC voltage regulator delivering a stable 4A (48W) output from a broad 10-36V input range. Engineered with IP67 waterproof alloy housing and comprehensive safety protections, it safeguards sensitive electronics in vehicles, boats, RVs, and solar systems. Its compact, easy-to-install design makes it the go-to surge protector for professionals demanding reliable, clean power on the move.

## Description

Buy Car Voltage Stabilizer, 4A 48W Heavy Duty 12v Voltage Regulator Surge Protector for Car Battery Truck Vehicle Boat RV Camper Solar System (10-36V Input, 12V Output): Power Converters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Seems solid. - I wired this in over the weekend without taking it apart first. I’m using it for suspension/rock lighting (x11 3-led modules 12v .250mA). x4 come on at door open & the rest on switch. I don’t care if it shorts out & blows my lights, they cost me $6 to replace. I wired a direct feed from an aux fuse panel that I put in that read 14.2vDC with engine idle. I grounded both leads & body to chassis & gave it a 5A fuse. The tested output is 18awg at 10’ & with x4 LEDs powered, It showed 12.20vDC at 1A at the LEDs & the same at the regulator with no load. At idle with no load, this module showed .001A for a moment then nothing. I couldn’t find it in mA or uA. I decided to leave it wired direct to observe the draw and because my 95 Chevy truck is negative pulsed interior lighting with positive ground. I made it a relay activated output & I have the rocklights activate on domelight trigger for door locking/unlocking. Note: If you do this type of lighting, keep in mind the negative trigger floats a positive voltage when not activated due to the lighting control module under the dash so keep the coil circuit dedicated to minimize load/shorting/abnormal pathways to battery through the control module. I did accidentally send my rigids through the module for a brief moment & the drain of x2 dually driving pods, sent it to 6.5A for a second with no issues. I’ve noticed no heat buildup on thermal at 1A nominal & 2.5A occasional. I do have a slightly weaker fm station that’s in stereo maybe 70% of the time. When this is running under the hood (1A continuous draw), it takes the station out of stereo & gives me enough static to not be able to hear it. Closer antennas are not effected. Later I plan to try a capacitor, choke or diode combinations to attempt to remove the interference. I’ve not put it on the scope cause again, I don’t care about outcome in this project.
Review: Outstanding. Used with cooler - I use this in conjunction of a power pack and a electric cooler. The cooler normally stops working on 60 percent of the power pack, now it reaches zero before shutting down.

## Features

- [12V DC Voltage Stabilizer ] Heavy-duty car voltage regulator 12v accepts DC 10-36V input and delivers a stable 12V 4A (48W) output, perfect as a voltage stabilizer 12v for cars, trucks, RVs, boats, campers, and solar power systems.
- [Protect Sensitive Electronics] This 12v dc voltage regulator safeguards your devices from unstable voltage, dc dc stabilizer preventing damage from old car batteries, power fluctuations, or electrical surges.
- [Waterproof & Rugged Design] 12v surge protector built with IP67 waterproof alloy housing and sealed with heat-conduction silica gel for durability in outdoor or harsh environments.
- [Comprehensive Safety Protection] 12v voltage regulator Integrated protection against over-voltage, under-voltage, overload, overheating, and short circuits ensures safe and reliable power supply.
- [Compact & Easy Installation] 12v DC Stabilizer Slim, lightweight build with 12cm/4.7-inch wire length for quick installation. Size: 74mm x 74mm x 32mm (LWH); Net Weight: 250g.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B06Y5JHZG2 |
| Best Sellers Rank | #170,783 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #702 in Power Converters |
| Brand | Cocar |
| Color | 12V Surge Protector |
| Customer Reviews | 4.0 out of 5 stars 821 Reviews |
| Input Voltage | 10 volts_of_direct_current |
| Item Dimensions | 2.91 x 2.91 x 1.26 inches |
| Item Weight | 230 g |
| Item dimensions L x W x H | 2.91 x 2.91 x 1.26 inches |
| Manufacturer | Cocar |
| Mfr Part Number | 12T12-4A |
| Model Number | 12T12-4A |
| Number of Items | 1 |
| Number of Outlets | 1 |
| Output Voltage | 12 volts |
| Plug Type | 2 Pin or DC power jack |
| UPC | 612032292973 |
| Warranty Description | 1 year |

## Product Details

- **Brand:** Cocar
- **Color:** 12V Surge Protector
- **Input Voltage:** 10 volts_of_direct_current
- **Item Weight:** 230 g
- **Item dimensions L x W x H:** 2.91 x 2.91 x 1.26 inches

## Images

![Car Voltage Stabilizer, 4A 48W Heavy Duty 12v Voltage Regulator Surge Protector for Car Battery Truck Vehicle Boat RV Camper Solar System (10-36V Input, 12V Output) - Image 1](https://m.media-amazon.com/images/I/61Wt6VYa-aL.jpg)
![Car Voltage Stabilizer, 4A 48W Heavy Duty 12v Voltage Regulator Surge Protector for Car Battery Truck Vehicle Boat RV Camper Solar System (10-36V Input, 12V Output) - Image 2](https://m.media-amazon.com/images/I/71QqgznlczL.jpg)
![Car Voltage Stabilizer, 4A 48W Heavy Duty 12v Voltage Regulator Surge Protector for Car Battery Truck Vehicle Boat RV Camper Solar System (10-36V Input, 12V Output) - Image 3](https://m.media-amazon.com/images/I/71lTcYbhDDL.jpg)
![Car Voltage Stabilizer, 4A 48W Heavy Duty 12v Voltage Regulator Surge Protector for Car Battery Truck Vehicle Boat RV Camper Solar System (10-36V Input, 12V Output) - Image 4](https://m.media-amazon.com/images/I/71PXPcDhrRL.jpg)
![Car Voltage Stabilizer, 4A 48W Heavy Duty 12v Voltage Regulator Surge Protector for Car Battery Truck Vehicle Boat RV Camper Solar System (10-36V Input, 12V Output) - Image 5](https://m.media-amazon.com/images/I/71JnUpYzWGL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Seems solid.
*by B***N on March 19, 2019*

I wired this in over the weekend without taking it apart first. I’m using it for suspension/rock lighting (x11 3-led modules 12v .250mA). x4 come on at door open & the rest on switch. I don’t care if it shorts out & blows my lights, they cost me $6 to replace. I wired a direct feed from an aux fuse panel that I put in that read 14.2vDC with engine idle. I grounded both leads & body to chassis & gave it a 5A fuse. The tested output is 18awg at 10’ & with x4 LEDs powered, It showed 12.20vDC at 1A at the LEDs & the same at the regulator with no load. At idle with no load, this module showed .001A for a moment then nothing. I couldn’t find it in mA or uA. I decided to leave it wired direct to observe the draw and because my 95 Chevy truck is negative pulsed interior lighting with positive ground. I made it a relay activated output & I have the rocklights activate on domelight trigger for door locking/unlocking. Note: If you do this type of lighting, keep in mind the negative trigger floats a positive voltage when not activated due to the lighting control module under the dash so keep the coil circuit dedicated to minimize load/shorting/abnormal pathways to battery through the control module. I did accidentally send my rigids through the module for a brief moment & the drain of x2 dually driving pods, sent it to 6.5A for a second with no issues. I’ve noticed no heat buildup on thermal at 1A nominal & 2.5A occasional. I do have a slightly weaker fm station that’s in stereo maybe 70% of the time. When this is running under the hood (1A continuous draw), it takes the station out of stereo & gives me enough static to not be able to hear it. Closer antennas are not effected. Later I plan to try a capacitor, choke or diode combinations to attempt to remove the interference. I’ve not put it on the scope cause again, I don’t care about outcome in this project.

### ⭐⭐⭐⭐⭐ Outstanding. Used with cooler
*by J***N on July 4, 2024*

I use this in conjunction of a power pack and a electric cooler. The cooler normally stops working on 60 percent of the power pack, now it reaches zero before shutting down.

### ⭐ It will not output 12 volts as the description says. the most you will get out of is 11.91 volts
*by F***T on April 25, 2021*

Most 12 volt appliances require 12 to 12.5 volts to operate properly. This regulator will only allow 11.91 volts at the very most. Therefore things that require an actual 12 volts will not work properly and if they have a circuit board they probably will not work at all. Waste of my money. If it only puts out 11.91 volts at the very most under any circumstances then that is what it should say in the description.

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*Product available on Desertcart Panama*
*Store origin: PA*
*Last updated: 2026-08-21*