--- product_id: 247066344 title: "Energizer 2-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, 7 Step Smart Charging Technology" brand: "energizer" price: "FREE" currency: GBP in_stock: false reviews_count: 5 url: https://www.desertcart.co.uk/products/247066344-energizer-2-amp-fully-automatic-smart-charger-6v-and-12v store_origin: GB region: United Kingdom --- # 2 AMP fully automatic charge 7-step smart charging tech 6V & 12V battery compatibility Energizer 2-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, 7 Step Smart Charging Technology **Brand:** energizer **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > 🔋 Power up smarter, not harder — keep your ride ready 24/7! ## Quick Answers - **What is this?** Energizer 2-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, 7 Step Smart Charging Technology by energizer - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/247066344-energizer-2-amp-fully-automatic-smart-charger-6v-and-12v) ## Best For - energizer enthusiasts ## Why This Product - Trusted energizer brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Automatic Float Mode:** Intelligent switch to maintain battery without overcharging or damage. - • **Dual Voltage Mastery:** Seamlessly charges both 6V and 12V lead-acid batteries for versatile use. - • **Smart 7-Step Charging:** Advanced high-frequency tech optimizes battery life and performance. - • **Effortless Quick Connect:** Includes easy-to-use battery clips for fast, secure setup every time. - • **Trusted Durability & Support:** Backed by a 5-year warranty and expert customer service for peace of mind. ## Overview The Energizer 2-Amp Fully-Automatic Smart Charger delivers cutting-edge 7-step charging technology that intelligently diagnoses, charges, and maintains 6V and 12V lead-acid batteries. Designed for a wide range of vehicles from motorcycles to classic cars, it features automatic float mode to prevent overcharging, quick-connect clips for hassle-free use, and a robust 5-year warranty. ETL approved and engineered for longevity, this charger ensures your battery stays at peak performance, making it an essential tool for professionals and enthusiasts who demand reliability and efficiency. ## Description Why should you buy an Energizer battery charger? • The Energizer ENC-2A battery charger/maintainer features 6 volt and 12 volt charging selectivity, with a 7 step smart charging technology that will improve your battery’s life cycle. • Use for battery maintenance, charging RVs, specialty vehicles, antique and classic cars, marine deep cycle batteries, motorcycles, lawn mowers, ATVs, snowmobiles, personal watercraft and more. • Maintains battery charge in stored vehicles and battery applications. Includes two connector sets: • battery clips. • Fully automatic, provides a charge when needed, stops charging when battery is fully-charged or topped-off. • Built-in circuit protection guards against overcharging, reverse polarity or short circuit. Automatic Micro Processor Control Unit Charge: • Stage 1 —Diagnosis: Analysis the battery can accept charge or not, prevent charging from proceeding on the a defective battery; • Stage 2—Pre-charge: Battery V <12V, small current to charge, better maintenance battery; • Stage 3 — Soft start: Bulk charging process with a gentle (soft) charge. • Stage 4—CC (Constant Current):Fast speed charging; • Stage 5—CV(Constant Voltage)Absorption to voltage 14.6V, This is a charge cycle for batteries nearly full. It will top off the battery at 14.6VDC; • Stage 6—Resting: Cut off with full charged statement, high energy efficiency; • Stage 7—Restoring: Automatic On-off Monitoring. The charger dc output will shut off and monitor a fully charged battery. If the battery falls below 12.8VDC, the charger will restart and enter into stage one. Review: Super efficace, garde la batterie à pleine capacité en tout temps. Review: I am totally impressed with the Energizer 4.0 AMP Battery Charger. I am in the taxi business and my taxi's need to run 24 hours a day. As soon as one taxi's has even has a symptom of a battery problem and the alternator checks out I immediately change the battery. I had 3 used battery's that failed on me. And left them in storage. Battery Number 1. This battery was in storage for 7 years and I thought I would use it as a core deposit. The battery voltage was 6 to 7 volts (very low). I hooked up the Energizer 4amp charger and immediately started to charge at between 6 to 7 volts. It took about 27 hours to fully charge the battery. The only problem is that at around 24+ hours an E3 code appeared (overheat code but the Energizer 4.0 amp charger only felt warm). I simply unplugged the charger and waited 30 seconds and plugged it back in. The Energizer continued until the battery was fully charged. I also have a Ctek 3300 charger and if the battery voltage is too low I would have to initially charge it with my old Schumacher battery charger to bring it up a little. Then the Ctek could start to charge the battery. Battery Number 2 This second battery is new (6 months) but was weak and could even turn on the interior lights. Voltage on this battery was 10 volts. The Energizer 4 amp Charger again started charging with no problems. In about 20+ the battery was fully charged. Battery Number 3 This third battery was in storage hooked in the car and left that way for five years That car was to be used for spare parts.. When I touched the battery terminals no spark. I thought this battery was finished. By chance I connected it to the Energizer 4.0 amp charger and it started to charging the battery. At around 24+ hours an E3 code appeared but by simply unplugging and waiting 30 seconds the plugging it back in everything was fine. I do not know if the Energizer has a internal timer and if the charger will shut off after 24+ hours. The charger is not hot and at best lukewarm. On battery's number 1 and number 3, batteries were highly sulphated. These are the 9 steps which are: Stage 1 Diagnosis and Analysis Stage 2 Desulphation Stage 3 Pre-Charge Stage 4 Soft Start ….slow current charge Stage 5 Constant …..current charge Stage 6 Constant voltage until nearly full charge Stage 7 Resting Cutoff fully charge Stage 8 Reconditioning when fully charge but reaches 12.8 volts within 2 minutes. Charger will determine the status Stage 9. Restoring.... If battery falls below 12.8 volts. Charger will start stage 3 to stage 6 automatically. When I first saw this charger I took a chance in ordering the Energizer 4 amp model. I was very surprised. It is the best Battery Charger on the market today plus it is cheaper $29.95. (Ctek $69.00).I will buy the 8 amp model next. Update The Energizer ENC 4amp can be left connect to a load (like still hooked up to a car). If no load, my battery registered 12.5 volts, and reaches 14.75 volts with the Energizer Charger for recharging (out of the car). When the car is running with alternator charging without the Energizer Charger the reading is 14.0 volts (normal). When the Energizer Charger is plugged in with the engine running and alternator charging the voltage is 14.6 volts. The key to the success of this charger is that it senses the voltage first then will match to charging rate. Load or No-load. I charger is manufactured in China, The software/design must to have been USA designed. No way is this charger software, design and manufactured totally in China. It has leapfrogged the Ctek Chargers. ## Features - 2 AMP FULLY AUTOMATIC BATTERY CHARGER - Automatically switches between charging mode and float mode monitoring - 7 STEP SMART BATTERY CHARGER - High-frequency smart 7 step charging technology keeps batteries at optimal charge - BATTERY MAINTAINER - For 6V & 12V battery systems. Charges 6 and 12 volt lead-acid, automotive type batteries. - QUICK CONNECTION - Easy connection to vehicle battery using the included battery clips. - 5 YEAR WARRANTY- Includes a five year, repair or replace warranty and specialized customer service & technical support via email phone or chat. From a brand you can trust! ETL Approved under UL std 1236 and CSA C22.2 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01GSI1S08 | | Amperage | 2 Amps | | Best Sellers Rank | 834,221 in Automotive ( See Top 100 in Automotive ) 2,284 in Car Battery Charging Units | | Brand Name | Energizer | | Colour | black | | Current Rating | 2 Amps | | Customer Reviews | 4.4 4.4 out of 5 stars (1,631) | | Global Trade Identification Number | 00841915002211 | | Input Voltage | 12 Volts | | Item Dimensions D x W x H | 4.5D x 7.9W x 12.6H centimetres | | Item Weight | 408 g | | Manufacturer | Energizer | | Manufacturer Part Number | ENC-2A | | Model Number | ENC2A | | Output Voltage | 12 Volts | | Product Warranty | 5 Year Warranty | | Specification Met | CSA | | UPC | 841915002211 | ## Product Details - **Brand:** Energizer - **Colour:** black - **Item weight:** 408 g - **Output voltage:** 12 Volts - **Product dimensions:** 4.5D x 7.9W x 12.6H centimetres ## Images ![Energizer 2-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, 7 Step Smart Charging Technology - Image 1](https://m.media-amazon.com/images/I/6176XBQLzxL.jpg) ![Energizer 2-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, 7 Step Smart Charging Technology - Image 2](https://m.media-amazon.com/images/I/71W97azk6lL.jpg) ![Energizer 2-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, 7 Step Smart Charging Technology - Image 3](https://m.media-amazon.com/images/I/71MIigLOipL.jpg) ![Energizer 2-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, 7 Step Smart Charging Technology - Image 4](https://m.media-amazon.com/images/I/71dS6hOh9mL.jpg) ![Energizer 2-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, 7 Step Smart Charging Technology - Image 5](https://m.media-amazon.com/images/I/71C+B3oYJyL.jpg) ## Available Options This product comes in different **Size Name** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by M***S on 6 January 2026* Super efficace, garde la batterie à pleine capacité en tout temps. ### ⭐⭐⭐⭐⭐ Review *by D***. on 10 October 2016* I am totally impressed with the Energizer 4.0 AMP Battery Charger. I am in the taxi business and my taxi's need to run 24 hours a day. As soon as one taxi's has even has a symptom of a battery problem and the alternator checks out I immediately change the battery. I had 3 used battery's that failed on me. And left them in storage. Battery Number 1. This battery was in storage for 7 years and I thought I would use it as a core deposit. The battery voltage was 6 to 7 volts (very low). I hooked up the Energizer 4amp charger and immediately started to charge at between 6 to 7 volts. It took about 27 hours to fully charge the battery. The only problem is that at around 24+ hours an E3 code appeared (overheat code but the Energizer 4.0 amp charger only felt warm). I simply unplugged the charger and waited 30 seconds and plugged it back in. The Energizer continued until the battery was fully charged. I also have a Ctek 3300 charger and if the battery voltage is too low I would have to initially charge it with my old Schumacher battery charger to bring it up a little. Then the Ctek could start to charge the battery. Battery Number 2 This second battery is new (6 months) but was weak and could even turn on the interior lights. Voltage on this battery was 10 volts. The Energizer 4 amp Charger again started charging with no problems. In about 20+ the battery was fully charged. Battery Number 3 This third battery was in storage hooked in the car and left that way for five years That car was to be used for spare parts.. When I touched the battery terminals no spark. I thought this battery was finished. By chance I connected it to the Energizer 4.0 amp charger and it started to charging the battery. At around 24+ hours an E3 code appeared but by simply unplugging and waiting 30 seconds the plugging it back in everything was fine. I do not know if the Energizer has a internal timer and if the charger will shut off after 24+ hours. The charger is not hot and at best lukewarm. On battery's number 1 and number 3, batteries were highly sulphated. These are the 9 steps which are: Stage 1 Diagnosis and Analysis Stage 2 Desulphation Stage 3 Pre-Charge Stage 4 Soft Start ….slow current charge Stage 5 Constant …..current charge Stage 6 Constant voltage until nearly full charge Stage 7 Resting Cutoff fully charge Stage 8 Reconditioning when fully charge but reaches 12.8 volts within 2 minutes. Charger will determine the status Stage 9. Restoring.... If battery falls below 12.8 volts. Charger will start stage 3 to stage 6 automatically. When I first saw this charger I took a chance in ordering the Energizer 4 amp model. I was very surprised. It is the best Battery Charger on the market today plus it is cheaper $29.95. (Ctek $69.00).I will buy the 8 amp model next. Update The Energizer ENC 4amp can be left connect to a load (like still hooked up to a car). If no load, my battery registered 12.5 volts, and reaches 14.75 volts with the Energizer Charger for recharging (out of the car). When the car is running with alternator charging without the Energizer Charger the reading is 14.0 volts (normal). When the Energizer Charger is plugged in with the engine running and alternator charging the voltage is 14.6 volts. The key to the success of this charger is that it senses the voltage first then will match to charging rate. Load or No-load. I charger is manufactured in China, The software/design must to have been USA designed. No way is this charger software, design and manufactured totally in China. It has leapfrogged the Ctek Chargers. ### ⭐⭐⭐⭐⭐ Review *by R***O on 6 April 2025* Buena calidad. ## Frequently Bought Together - Energizer 2-Amp Battery Charger/Maintainer, 9-Step Smart Battery Car Charger, LCD Display, 6V/12V Voltage Detection for Auto, Motorcycle, RV, Boat,SUV - Orion Motor Tech 1PC 12V Battery Charger and Maintainer, Trickle Charger for Charging Boats Motorcycles ATVs Riding Mowers & Car Truck SUV RV Maintenance with Smart 3 Stage Charging & Power Indicator --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/247066344-energizer-2-amp-fully-automatic-smart-charger-6v-and-12v](https://www.desertcart.co.uk/products/247066344-energizer-2-amp-fully-automatic-smart-charger-6v-and-12v) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-30*