---
product_id: 21017525
title: "3 AMP Battery Charger and Maintainer - Automotive Switchable 12V or 6V Smart Automatic for Cars SUVs and Trucks - Lead Acid, AGM, Gel, & Lithium Battery Charger - 022-0202-COS"
brand: "battery tender"
price: "€ 156.31"
currency: EUR
in_stock: true
reviews_count: 10
category: "Battery Tender"
url: https://www.desertcart.sk/products/21017525-3-amp-battery-charger-and-maintainer-automotive-switchable-12v-6v
store_origin: SK
region: Slovakia
---

# 3 Amp smart charging power Auto float mode for maintenance Switchable 6V/12V battery compatibility 3 AMP Battery Charger and Maintainer - Automotive Switchable 12V or 6V Smart Automatic for Cars SUVs and Trucks - Lead Acid, AGM, Gel, & Lithium Battery Charger - 022-0202-COS

**Brand:** battery tender
**Price:** € 156.31
**Availability:** ✅ In Stock

## Summary

> 🔋 Keep your ride ready—charge smart, drive confident!

## Quick Answers

- **What is this?** 3 AMP Battery Charger and Maintainer - Automotive Switchable 12V or 6V Smart Automatic for Cars SUVs and Trucks - Lead Acid, AGM, Gel, & Lithium Battery Charger - 022-0202-COS by battery tender
- **How much does it cost?** € 156.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/21017525-3-amp-battery-charger-and-maintainer-automotive-switchable-12v-6v)

## Best For

- battery tender enthusiasts

## Why This Product

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

## Key Features

- • **Safety First Design:** Spark-proof connection and reverse polarity detection ensure worry-free charging.
- • **Compact & Convenient:** Lightweight with 11 feet of combined cord length for flexible, clutter-free setup.
- • **Smart 3 Amp Charging:** Delivers optimal power without overcharging, preserving battery life.
- • **Auto Float Maintenance:** Automatically switches to float mode to keep your battery perfectly topped off.
- • **Universal Voltage Switch:** Easily toggle between 6V and 12V for versatile battery support.

## Overview

The Battery Tender 3 AMP Charger is a compact, smart automatic charger and maintainer designed for 6V and 12V lead-acid, AGM, gel, and lithium batteries. It delivers a steady 3 amp charge, automatically switches to float mode to prevent overcharging, and features safety mechanisms like spark-proof connection and reverse polarity detection. With 11 feet of combined cord length and a user-friendly LED status indicator, it’s the trusted choice for maintaining automotive batteries in cars, SUVs, and trucks.

## Description

Buy Battery Tender 3 AMP Battery Charger and Maintainer - Automotive Switchable 12V or 6V Smart Automatic for Cars SUVs and Trucks - Lead Acid, AGM, Gel, & Lithium Battery Charger - 022-0202-COS: Battery Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Excellent Quality, Heavy Duty Battery Tender - Buy this knowing you'll be quite happy - Well if you know Battery Tender then you already know what this review will say. If you do not know this brand please read. The size is what you would expect from this item, there are smaller foot print battery tenders available but the charge rate does drop. This particular model work amazingly well The charge rate is exactly what one would hope for in a tender - it is not a "fast" charge as it is not meant to be; However, it does get the battery full quickly The indicator lights are bright and easy to read/understand at a quick glance Battery Tender durability is excellent I have a few actually one is over 10 years old and going strong
Review: It just works. Get this to keep your Hybrid 12V maintained when not driving. - It just works. I have a newer Hybrid vehicle. Generally we won't drive it much in the winter, and lo behold the 12V battery was at ~3V or so after about 10 days outside in the cold. So we battery pack boosted it and drove around. Got it back up to charge. Purchased a Noco5 and it was worthless. Just read it was at 25% no matter what mode it was in. Checked voltage at 12.1V and it still read 25%. Sure enough after a week or so the battery was running to about 6V and I sent the Noco5 back. Enter this little gem. Keeps the 12V maintained, granted it's only been a couple of days now, but put it on at 11.4V and read it again after taking it off today at 12.2V. I will update after winter to see how this holds up but at the moment very pleased that it's as simple as plugging it in.

## Features

- Stay Charged: The powerful 3 amp charger provides a full charge to your automotive vehicle’s battery before automatically going into float mode to maintain proper voltage levels without overcharging. 5 amps 12 volt charger and maintainer
- Connect and Forget: With a low maintenance design, our universal vehicle charger and maintainer is compact, lightweight, and easy to operate even in small storage space for your convenience. Features 11 total feet of combined reach including 6 ft. AC cord and 5 ft. DC output charging cord
- Includes: 3 AMP battery charger, ring terminal and alligator clip combo cable, 5 year manufacturer's warranty, instruction manual, and lifetime customer service
- Monitor Power Levels: A solid state two-color LED light indicates the charging status and if the battery voltage drops too far under load, ISM adaptive charging will resume full charger output power. It is UL/CSA, CE and BC approved
- Safe and Secure: Spark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power.
- Versatility: Compatible with lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell), this charger works with 6 volt and 12 volt batteries with the push of a button

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B016S7NHWQ |
| Amperage | 3 Amps |
| Batteries | 1 AAA batteries required. |
| Best Sellers Rank | #2,470 in Automotive ( See Top 100 in Automotive ) #37 in Battery Chargers |
| Brand | Battery Tender |
| Customer Reviews | 4.8 4.8 out of 5 stars (2,156) |
| Date First Available | October 17, 2015 |
| Exterior | Painted |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.44 pounds |
| Item model number | 022-0202-COS |
| Manufacturer | Deltran |
| Manufacturer Part Number | 022-0202-COS |
| Model | Deltran 022-0202-COS |
| Product Dimensions | 3.4 x 11.1 x 9.4 inches |

## Product Details

- **Brand:** Battery Tender
- **Color:** Black
- **Item Weight:** 1.44 Pounds
- **Output Voltage:** 12 Volts (DC)
- **Product Dimensions:** 3.4"D x 11.1"W x 9.4"H

## Images

![3 AMP Battery Charger and Maintainer - Automotive Switchable 12V or 6V Smart Automatic for Cars SUVs and Trucks - Lead Acid, AGM, Gel, & Lithium Battery Charger - 022-0202-COS - Image 1](https://m.media-amazon.com/images/I/51ug4zbSnSL.jpg)

## Available Options

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

## Questions & Answers

**Q: How does Axtra 3.6-amp battery charger compare to Battery Tender 3-amp battery charger?**
A: The Axtra acts as both a 6-volt and a 12-volt charger. However, it can also provide a constant 3-amp battery tender witch, when set, will provide a continuous charge over a long period of time. The 3-amp battery tender only provides a continuous charge but cannot provide a 6 or 12-volt charge. If you do not have a charger, I would recommend the Axtra as is it can provide both aspects.

**Q: I'm using Axtra battery charger to maintain 2 batteries over the winter. Is this Battery Tender reliable as Axtra battery maintainer?**
A: My experience with using the battery tender is nothing but good. Pretty much set it and forget it. No problems what so ever. Very easy to use, very well made, very reliable. I would for sure buy another one.

**Q: Is this over rated for motorcycles**
A: If the battery is rated less than 30 amp hrs, I would say yes. The rule of thumb is the maximum charge rate should not excede 1/10 of the battery's Amp hr rating. E.g. 20 amp hr battery should not be charged at over 2 amps

**Q: Planning to connect black to black and red to red pigtail for car battery still inside car. Confused since not sure if that’s grounded. Pls confirm?**
A: Yes, Red to Red (positive) and Black to Black (negative) is the correct connection.  Why are you worried about ground on a 12 volt car battery?

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Quality, Heavy Duty Battery Tender - Buy this knowing you'll be quite happy
*by R***I on July 3, 2025*

Well if you know Battery Tender then you already know what this review will say. If you do not know this brand please read. The size is what you would expect from this item, there are smaller foot print battery tenders available but the charge rate does drop. This particular model work amazingly well The charge rate is exactly what one would hope for in a tender - it is not a "fast" charge as it is not meant to be; However, it does get the battery full quickly The indicator lights are bright and easy to read/understand at a quick glance Battery Tender durability is excellent I have a few actually one is over 10 years old and going strong

### ⭐⭐⭐⭐⭐ It just works. Get this to keep your Hybrid 12V maintained when not driving.
*by H***N on January 5, 2026*

It just works. I have a newer Hybrid vehicle. Generally we won't drive it much in the winter, and lo behold the 12V battery was at ~3V or so after about 10 days outside in the cold. So we battery pack boosted it and drove around. Got it back up to charge. Purchased a Noco5 and it was worthless. Just read it was at 25% no matter what mode it was in. Checked voltage at 12.1V and it still read 25%. Sure enough after a week or so the battery was running to about 6V and I sent the Noco5 back. Enter this little gem. Keeps the 12V maintained, granted it's only been a couple of days now, but put it on at 11.4V and read it again after taking it off today at 12.2V. I will update after winter to see how this holds up but at the moment very pleased that it's as simple as plugging it in.

### ⭐⭐⭐⭐⭐ BOTTOM LINE: IT WORKS!!!
*by S***. on December 3, 2025*

I gave it 5 stars because it worked perfectly, and exactly as advertised. The only issue I had was with the instructions, not the product. Once I figured out how to use the product, it was very easy. The instructions are unnecissarily confusing.. I would recommend using your head more than the instructions when using it, and only refer to the instructions when interpreting what the various light combinations are telling you. Bottom line: It works.

## Frequently Bought Together

- Battery Tender 3 AMP Battery Charger and Maintainer - Automotive Switchable 12V or 6V Smart Automatic for Cars SUVs and Trucks - Lead Acid, AGM, Gel, & Lithium Battery Charger - 022-0202-COS
- Battery Tender Ring Terminal Harness Accessory Cable - 18 inch Cord Adapter with SAE Quick Disconnect - Easy Quick Convenient for Motorcycles, Cars, ATVs and More - 081-0069-6
- Battery Tender Junior 12V, 750mA Charger and Maintainer: Automatic 12V Powersports for Motorcycle, ATVs, and More - Smarter Than a Trickle Charger - 021-0123

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-06*