---
product_id: 753861346
title: "4 Amp Battery Charger & Maintainer - 12V or 6V Fully Automatic Lithium Acid Smart Lead Battery Charger for Cars, SUVs, and Trucks"
brand: "battery tender"
price: "€ 293.11"
currency: EUR
in_stock: true
url: https://www.desertcart.nl/products/753861346-4-amp-battery-charger-and-maintainer-12v-or-6v-fully
store_origin: NL
region: Netherlands
---

# 4 Amp fast charging 6V/12V dual voltage Reverse polarity & spark proof 4 Amp Battery Charger & Maintainer - 12V or 6V Fully Automatic Lithium Acid Smart Lead Battery Charger for Cars, SUVs, and Trucks

**Brand:** battery tender
**Price:** € 293.11
**Availability:** ✅ In Stock

## Summary

> 🔌 Stay powered, stay ahead — the charger your ride deserves!

## Quick Answers

- **What is this?** 4 Amp Battery Charger & Maintainer - 12V or 6V Fully Automatic Lithium Acid Smart Lead Battery Charger for Cars, SUVs, and Trucks by battery tender
- **How much does it cost?** € 293.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/753861346-4-amp-battery-charger-and-maintainer-12v-or-6v-fully)

## 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

- • **Smart 4 Amp Power Boost:** Delivers a rapid full charge, then seamlessly switches to float mode to keep your battery perfectly maintained without overcharging.
- • **Intelligent Safety First:** Built-in reverse polarity detection and spark-proof connection ensure worry-free, damage-free charging every time.
- • **Plug & Forget Convenience:** Compact, lightweight design with an 11-foot combined cable reach—ideal for tight spaces and effortless operation.
- • **Real-Time Status Monitoring:** Two-color LED indicators and ISM adaptive charging technology keep you informed and your battery optimized continuously.
- • **Universal Battery Compatibility:** Works flawlessly with lithium (LiFePO4), lead-acid, AGM, gel cell, flooded, and sealed batteries at the push of a button.

## Overview

The Battery Tender 4 Amp Charger is a fully automatic, smart battery maintainer designed for 6V and 12V lithium and lead-acid batteries. Featuring adaptive ISM technology, reverse polarity protection, and spark-proof operation, it ensures fast, safe charging and long-term battery health. Compact and versatile, it’s perfect for cars, SUVs, trucks, and more, backed by a 5-year warranty and lifetime support.

## Description

Battery Tender 4 Amp Battery Charger & Maintainer - 12V or 6V Fully Automatic Lithium Acid Smart Lead Battery Charger for Cars, SUVs, and Trucks

## Features

- STAY CHARGED - 4 Amp car battery charger provides a full charge to your machine's battery before automatically switching to float mode to maintain proper voltage levels for your battery without overcharging
- PLUG AND FORGET - With a low-maintenance design, our universal vehicle charger and maintainer is compact, lightweight, and easy to operate even in a small storage space for your convenience. Features 11 total feet of combined reach, including 6-foot AC cord and 5-foot DC output charging cable.
- INCLUDES - 4 Amp battery charger, ring terminal and alligator clip combo cable, 5-year warranty 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 under load, ISM adaptive charging will resume the full output power of the charger. It is UL/CSA, CE and BC approved
- SAFE AND SECURE - Spark proof during cable connection and automatically detects reverse polarity to ensure a correct, blocked connection before providing power
- VERSATILITY - Compatible with lithium (LiFeP04), lead, flooded, or sealed maintenance-free (AGM and gel cell) batteries, this charger operates with 6 volt and 12 volt batteries at the push of a button

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | 12V |
| Brand | Battery Tender |
| Model | 12V 022-0209-BT-WH |
| Product Dimensions | 17.53 x 8.46 x 4.85 cm; 1.09 kg |
| Item model number | 022-0209-BT-WH |
| Exterior | Painted |
| Manufacturer Part Number | 022-0209-BT-WH |
| Amperage | 4 Amps |
| Item Weight | 1.09 Kilograms |

## Product Details

- **Brand:** Battery Tender
- **Colour:** Black, Green
- **Product dimensions:** 4.7D x 9.8W x 21.1H centimeters
- **Item weight:** 2.4 Pounds
- **Output voltage:** 12 Volts

## Images

![4 Amp Battery Charger & Maintainer - 12V or 6V Fully Automatic Lithium Acid Smart Lead Battery Charger for Cars, SUVs, and Trucks - Image 1](https://m.media-amazon.com/images/I/51E7c9H7irL.jpg)

## Questions & Answers

**Q: can i leave this on my harley all winter ?**
A: I use the Battery Tender® Plus 12V, 1.25 Amp on my motorcycle and the Battery Tender 6V/12V, 4 Amp Lead Acid & Lithium Selectable Battery Charger on my Car. I leave them on both vehicles for extended amounts of time during the cold months.

**Q: Can i leave this on while im out of town for a month?**
A: By all means.  This device is intended to be connected for continuous operation (except for driving of course - be careful to unhook before getting in your vehicle.  The design has a microprocessor that senses battery storage and will adjust the trickle to keep it at 100% (but not overcharging).  In fact, you should not disconnect it for any reason unless driving the vehicle.  I have a lawn tractor that only receives sporadic use.  My zero turn does most of the lawn mowing.  In any event, I keep both of these machines on a Deltran dual bank tender.  Their batteries are several years old which is unusual for a lawn mower.  (Typically, they fail shortly after the 12 Mo warranty.)  Leave it on to do its job.  Keep in mind that most vehicles (cars & trucks) draw a small amount of amperage while sitting - security system & clock.  The tender will compensate for this discharge.  Hope this helps.

**Q: Does this unit detect cold weather and charge to help prevent battery freezing ?**
A: It does not detect cold weather. If it is on the battery and maintaining the voltage, the battery is less likely to freeze.

**Q: will it charge lead acid batteries?**
A: Absolutely, all mine are of that type.

## Frequently Bought Together

- Battery Tender 4 AMP Battery Charger and Maintainer - Automotive Switchable 12V or 6V Smart Automatic for Cars SUVs and Trucks - Lead Acid, AGM, Gel, & Lithium Battery Charger - 022-0209-BT-WH
- 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 25 Foot Extension SAE Cable - Designed for Use with Battery Tender Chargers - Quick Connect Plugs for Easy Connection to Motorcycle, Cars, ATVs and More - 081-0148-25

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**Shop now:** [https://www.desertcart.nl/products/753861346-4-amp-battery-charger-and-maintainer-12v-or-6v-fully](https://www.desertcart.nl/products/753861346-4-amp-battery-charger-and-maintainer-12v-or-6v-fully)

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-01*