Best 4 Amp Battery Chargers

In this article, we did good research to find out Best 4 Amp Battery Chargers with all the basic and advance features. We have listed top 10 4 Amp Battery Chargers below. In case, if you’re in hurry this is the Best 4 Amp Battery Chargers on Amazon

We spent 40 hours to find a best option for you and it’s a 12V 5A Trickle Battery, which comes with all amazing features you ever want. It is the Best 4 Amp Battery Chargers available in the market today. However, if you don’t want to spend big amount on 4 Amp Battery Chargers, then you should go with Jethax 12V 4A Smart which comes with all the basic options you could ever expect in 4 Amp Battery Chargers.

After a good research, we have sort listed Best 4 Amp Battery Chargers below.

Top 10 Best 4 Amp Battery Chargers In 2021

1 1

12V 5A Trickle Battery

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2 2

Jethax 12V 4A Smart

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3 3

Battery Tender 6V12V 4A

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4 4

GOOSUO 6V and 12V

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5 5

NOCO GENIUS5 5-Amp Fully-Automatic

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6 6

AIMTOM Smart Battery Charger

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7 7

GOOLOO 6V12V Smart Battery

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8 8

Energizer ENC4A 4-Amp Battery

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9 9


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10 10

DieHard 71328 612V Platinum

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Top 10 4 Amp Battery Chargers

Are you looking for top 10 4 Amp Battery Chargers available right now in the market? Then check out below, we researched and short listed best one here.

1. 12V 5A Trickle Battery


  • FULLY AUTOMATIC BATTERY MAINTAINER: Auto battery charger operating with 4-stage charging process (Initialization, Bulk Charge, Absorption, Float Mode) by microprocessor controlled program, to optimize battery power, without overcharging. Smart Trickle Charger automatically switches to float mode when the battery is fully charged. No need of any manual operation
  • SAFE & MULTI-PROTECTION: Short circuit / OVP / OCP / Overload / Overcharging / Polarity reversed protection, Made of high quality ABS, IP65 Waterproof and Dustproof, Lightweight(15.87oz), CE RoHS Approved
  • LED INDICATORS and 2 CONNECTORS: Car battery charger comes with two kinds of battery connectors, including battery clamps and battery rings for a more secure connection to battery terminals; 4 LEDs to indicate quantity of electricity and monitor the whole charging progress; Iconic LEDs to indicate the wrong polarity or bad battery
  • 100% MONEY-BACK GUARANTEE: One-year Warranty and 100% satisfaction service; Instruction Manual included
  • 2. Jethax 12V 4A Smart


  • Turnkey Solution: No additional purchase required, just plug in and go! Your 3-in-1 portable battery charger comes readily equipped with heavy-duty alligator clips and ring terminals to quickly and conveniently 1) repair, 2) charge, and 3) maintain your vehicles/equipment. Built-in LCD screen allows you to monitor charging, battery status, charge voltage, current, and much more, giving you the power to be your own home mechanic
  • 4-Stage Fully Automatic Battery Charging: Our smart charger is smarter than the others. Jethax’s smart battery charging technology, the “brain” behind our 12V battery charger, utilizes a 4-stage charging program: Initialization, Bulk Charge, Absorption Mode, and Float Mode. This process protects you from overcharging: the battery charger/maintainer automatically switches to lower voltage output in Float Mode when the battery is full, and switches to higher voltage output when the battery is low.
  • Lab-tested Safety Protection: Stringently lab-tested in UL (Underwriters Laboratories) certified testing facilities, our trickle battery charger’s fully automatic charging system is specifically designed to protect from reverse polarity, overcharging, discharging, sparking, over current, short circuiting, and overheating. This allows you to safely maintain and extend the battery life of your lead-acid batteries, while allowing your vehicles/equipment to operate more efficiently and stably.
  • Top-Notch Customer Service: your Jethax car battery charger comes with an industry leading 1-year assurance and incredibly friendly and experienced customer support. For any after sales technical assistance or product quality issues, simply click the “Contact Seller” button in “My Orders” to message us.
  • 3. Battery Tender 6V12V 4A

    The fully automatic 4 Amp Power Tender is a top-of-the-line 12V or 6V switchable battery charger, perfect for automotive, motorcycle and marine repair and maintenance shops.


  • Reversed Hook-Up Protection – Battery Tender checks for a correct connection before giving power
  • State of Charge LED Indicator
  • Connect It And Forget It: Once connected, the Battery Tender Charger manages your battery’s health on it’s own
  • 5 Year Industry Leading Warranty
  • 4. GOOSUO 6V and 12V


  • Multi-Protection: The GOOSUO battery charger offers safety features including reverse-polarity protection, over-current protection, overload protection, over-voltage protection, over-charge protection, and over-temperature protection.
  • LCD Screen: Provide visual state-of-charge feedback and diagnostic information, even when in maintenance/float mode. With dc output cable with ring and clip connectors to steady connect on the battery polarities.
  • Wide Range Use: On ALL 6V&12V SLA Battery 20Ah -120Ah such as -Wet, MF, GEL CELL Lead-acid batteries ), AGM (Flooded and EFB), LiON (12V LiFePO4) batteries. High efficiency and safely charges or maintains the battery of cars, vehicle, boat, marine, snowmobile, ATV, lawn tractor, motorcycle battery, lipo chargers, Riding Lawn Mowers. Widely Input range: 100-240V AC,50-60HZ.
  • ETL Safety Certified: With ETL/ FCC / CE / RoHS/ BC mark guarantee waterproof Battery pack charger, GOOSUO battery charger offers you 30 days money back, one-year warranty and lifetime after-sale service.
  • 5. NOCO GENIUS5 5-Amp Fully-Automatic

    Introducing the all-new GENIUS5, making it one of our most powerful, highest-performing, energy-efficient, and compact charger yet.


  • Do more with Genius – Designed for 6-volt and 12-volt lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.
  • Enjoy precision charging – An integrated thermal sensor detects the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates.
  • Charge dead batteries – Charges batteries as low as 1-volt. Or use the all-new Force Mode that allows you to take control and manually begin charging dead batteries down to zero volts.
  • Restore your battery – Automatically detects battery sulfation and acid stratification to restore lost battery performance for stronger engine starts and extended battery life.
  • Beyond maintenance – It’s not just a trickle charger, it’s an advanced battery maintainer. A fully-automatic, worry-free battery charger for everyday use – 24/7 – with zero overcharge.
  • Compatible with all types of vehicles – Charge and maintain cars, motorcycles, lawnmowers, ATVs, tractors, trucks, SUVs, boats, classic cars, hot rods, and more – you name it.
  • 6. AIMTOM Smart Battery Charger


  • ▲TOTAL PROTECTION: The AIMTOM battery charger offers safety features including reverse-polarity protection, over-current protection, overload protection, over-voltage protection, over-charge protection, and over-temperature protection. It is also IP65 waterproof and has a snow mode for low temperature operation, so you can have total peace of mind when using it in any situation.
  • ▲SIMPLE AND PRACTICAL TO USE: Using a backlit LCD display, the AIMTOM battery charger clearly and visibly shows charging voltage, current, battery type, charging mode, and the percentage of power remaining. When the charger is turned on, it restores the last settings used, making your life easier. It also automatically detects sulfated batteries and attempts to repair them if possible.
  • ▲SMART CHARGING MODE: Fully equipped with a 1A slow charge mode and a 4A fast charge mode, the intelligent 8-stage charging process allows for optimally complete battery charging without fear of overcharging, as the automatic charge cycle functionality switches to float mode after fully charging the battery.
  • ▲24/7 BATTERY MAINTAINER: Designed to bring a battery back up to a full state of charge and then maintain a battery at 100% indefinitely without the worry of typical trickle chargers that overcharge and burn up batteries. Will not overcharge a battery. Has auto-memory, which returns to last selected mode when restarted, and also automatically adjusts itself to changing current needs.
  • 7. GOOLOO 6V12V Smart Battery


  • 6-STAGE AUTOMATIC CHARGING – 12V battery charger operated with 6 stages automatic charging process by MCU controller: desulfation, soft start, bulk, absorption, battery test, floating/trickle to indicate quantity of electricity and monitor the whole charging progress. Stop automatically when the battery is fully charged. (Cautions: Only 12v battery supports trickle charging)
  • SMART BATTERY MAINTENANCE – Maintain various types of 6V 12V lead-acid batteries that more than 100Ah. Intelligent control system, strong pulse repair technology, remove vulcanization, repair slightly damaged batteries, reduce water loss, can extend the battery life. Make your battery more powerful.
  • INTELLIGENT DETECTION & INTUITIVE LCD SCREEN – When low-voltage, vulcanized or capacity loss is detected, LST battery maintainer charger directly prompt user to repair and charge or the battery has lost its value. And LCD screen displays charging status, battery voltage/current, battery status clearly, provide visual feedback and diagnostic information even when in maintenance mode.
  • MULTIPLE SAFETY PROTECTION FUNCTIONS – Made of fire retardant materials. Multiple security protections , such as over current protection, over charge protection, over heat protection, reverse connection protection, short circuit protection, full charged stop protection, etc.
  • 8. Energizer ENC4A 4-Amp Battery

    The Energizer ENC4A 4 Amp Battery Charger Maintainer is a 6-volt/12-volt 4 amp fully automatic battery charger for premium charging applications.


  • Auto voltage detection between 6-volt and 12-volt batteries
  • Built-in protection guards against overcharging, reverse polarity, or short circuits
  • LCD display shows status and battery voltage measurement
  • Automatically adjusts the amperage rate to charge and maintain batteries
  • 9. MOTOPOWER MP00207 6V 12V


  • FULLY AUTOMATIC – Voltage Auto Detection for 6V or 12V batteries – Dead battery detection and warning – Plug and go for charging and maintaining. The microprocessor controlled program will monitor the whole charging progress and automatically stop when the battery is fully charged. Then it will monitor the battery voltage and maintain the battery with a float charging current.
  • 7 CHARGING STAGES & Repair Mode – Diagnosis, Soft Start, Bulk Charge, Absorption, Float, Maintenance and Recovery.Two charging rates (2Amp or 4Amp) can be selected to charge 12V batteries in different capacities. 2 amp charge rate for 6v battery. Repair mode for sulfated batteries.
  • SAFETY ENSURED – Advanced micro technology ensure the safety against overcharge, short circuit and reverse palarity. Spark free technology.
  • LED INDICATION & SAE QUICK CONNECTION – Easy to read LED lights indicate power on, 6v or 12v mode, 2 amp or 4 amp charge rate, and battery charge status.Includes SAE quick disconnect Battery Terminal and Alligator Clip leads for ease of use.
  • 10. DieHard 71328 612V Platinum

    Charge or jump start your battery with the DieHard 71328 6/12V 15/125A Platinum Shelf Battery Charger Engine Starter.


  • Automatically senses voltage 6V or 12V allowing use for multiple batteries
  • Features battery maintaining to prevent overcharging
  • Includes 15-40A boost and 125A jump starting capabilities
  • Reverse hookup protection prevents charger operation if clamps are improperly connected
  • Conclusion

    We did good research to find out top 10 Best 4 Amp Battery Chargers to buy in 2021. For more similar product reviews, check out below or visit here.