The 10 best 12v battery charger circuit for 2018

Finding the best 12v battery charger circuit suitable for your needs isnt easy. With hundreds of choices can distract you. Knowing whats bad and whats good can be something of a minefield. In this article, weve done the hard work for you.

Product Features Editor's score Go to site
Diymore 5Pcs 3S 12V 10A 18650 BMS Charger Module Li-ion Lithium Battery Protection Board Diymore 5Pcs 3S 12V 10A 18650 BMS Charger Module Li-ion Lithium Battery Protection Board
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DBPOWER 600A 18000mAh Portable Car Jump Starter (up to 6.5L Gas, 5.2L Diesel Engine) Battery Booster and Phone Charger with Smart Charging Port (Black/Red) DBPOWER 600A 18000mAh Portable Car Jump Starter (up to 6.5L Gas, 5.2L Diesel Engine) Battery Booster and Phone Charger with Smart Charging Port (Black/Red)
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12V to 14.8V Automatic Lead Acid Battery Charger/Maintainer, 1.2A Trickle Charger for car, Truck, Boat, Motorcycle, RV, Lawn Tractor 12V to 14.8V Automatic Lead Acid Battery Charger/Maintainer, 1.2A Trickle Charger for car, Truck, Boat, Motorcycle, RV, Lawn Tractor
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Battery Tender 800 is a SuperSmart Battery Charger that will Constantly Monitor, Charge, and Maintain your Battery. It's Encapsulated and Protected from Moisture by an Electrical Insulation Battery Tender 800 is a SuperSmart Battery Charger that will Constantly Monitor, Charge, and Maintain your Battery. It's Encapsulated and Protected from Moisture by an Electrical Insulation
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NOCO Genius GEN2 20 Amp 2-Bank Waterproof Smart On-Board Battery Charger NOCO Genius GEN2 20 Amp 2-Bank Waterproof Smart On-Board Battery Charger
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Samlex Solar SEC-1230UL SEC-UL Series 12V Battery Charger Samlex Solar SEC-1230UL SEC-UL Series 12V Battery Charger
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LST 12V 5A Automatic Battery Charger Maintainer Smart Deep Cycle Trickle Charger for Automotive Car Boat Motorcycle Lawn Mower RV SLA ATV AGM GEL CELL WET& FLOODED Lead Acid Battery LST 12V 5A Automatic Battery Charger Maintainer Smart Deep Cycle Trickle Charger for Automotive Car Boat Motorcycle Lawn Mower RV SLA ATV AGM GEL CELL WET& FLOODED Lead Acid Battery
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Battery Tender 022-0148-DL-WH 12-Volt 4-Bank Battery Management System Battery Tender 022-0148-DL-WH 12-Volt 4-Bank Battery Management System
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CTEK (56-864) MUS4.3 12 Volt Fully Automatic 8 Step Battery Charger CTEK (56-864) MUS4.3 12 Volt Fully Automatic 8 Step Battery Charger
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Mroinge MBC055 6V and 12V 5.5A Smart Vehicle Battery Charger/Maintainer for Cars, Motorcycles, RVs, TVs, Powersports, Boat and More Vehicle GEL WET AGM Batteries, With IP65 Waterproof Mroinge MBC055 6V and 12V 5.5A Smart Vehicle Battery Charger/Maintainer for Cars, Motorcycles, RVs, TVs, Powersports, Boat and More Vehicle GEL WET AGM Batteries, With IP65 Waterproof
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Reviews

1. Diymore 5Pcs 3S 12V 10A 18650 BMS Charger Module Li-ion Lithium Battery Protection Board

Feature

Compact size and lightweight.
Fine workmanship and durable.
Can be applied to various 3.7V lithium core.
Short circuit protection. Overcharge protection.
Over-discharge protection. Overcurrent protection. Ensure the security of battery pack.

Description

Specification:
Maximum discharge current: 10A
Overcharge detection voltage: 4.25-4.35V0.05V
Over-discharge detection voltage: 2.3-3.0V0.05V
Maximum working current: 5A-8A; Transient current: 9A-10A
Operating temperature: -40 ~ 50 ; Storage temperature: -40 ~ 80
Quiescent current: <6uA; Internal resistance: <60m; Service life:> 30,000 hours

Suitable for:
10.8V (Rated voltage of polymer battery)
11.1V (18650 or 3.7V lithium battery rated voltage)
12.6V (Lithium battery full charge voltage)

Package Inlcude:

5 x lithium Battery Protection Board

2. DBPOWER 600A 18000mAh Portable Car Jump Starter (up to 6.5L Gas, 5.2L Diesel Engine) Battery Booster and Phone Charger with Smart Charging Port (Black/Red)

Feature

POWERFUL & COMPACT: Jump start your vehicle (up to 6.5L gas or 5.2L diesel engine) up to 20 times with 600 amps of peak current and heavy duty clamps and cables. Compact enough to store in your glovebox.
SMART CHARGING PORT: With 18000mAh capacity and smart USB port, it can full charge your laptops (include 8 in 1 laptop adapters in the package), smartphones, tablets, and other devices at the fastest speed possible.
PROTECTION: The high quality and spray gold intelligent jumper clamps has over current protection, short circuit protection, overload protection, over-voltage protection, over-charge protection.
LCD SCREEN & COMPASS: The new-added LCD screen can exactly show the remaining power. The compass can help you find your way home when get lost in the wild.
WHAT YOU GET: DBPOWER Jump Starter DJS50, intelligent jumper clamps, 12V wall charger, 12V car charger, use guide, our fan-favorite 3-year Warranty and friendly customer service.

Description

ATTENTION
1. Please read the instruction carefully and strictly follow the instruction before using the jump starter. Any wrong operation may cause damage to the jump starter or cannot get the car started.
Don't jump start any engine that exceed the maximum displacement the unit can bear, or it will cause damages to the unit.
3. Your jump starter will perform best when its battery is fully charged. If less than 30% charged, it may not be able to start your engine.
4. Don't crank the engine for more than 3 seconds. Allow the jump starter to cool down for at least 30 seconds after each jump-start.
5. You can only start the car when the indicator light of the jumper clamps flashes green. If it flashes red and green alternately, press the "booster" button next to the light for 3s which will turn it green, then to start the car.

A must have for every car!
Make sure you and your loved ones can get home when stranded. It will jump start 6.5L gas or 5.2L diesel engine up to 20 times on a single charge.

Powerful LED Light & Emergency Light

Besides a LED light with 3 modes (high, strobe and SOS), you can use the red emergency light as a hazard warning light to notify a traffic accident or call for emergency services.

Faster & Smarter Battery Charger
It equipped with a a 2.1A USB Output and a 2.4A Smart USB port, with 18000mAh capacity, you can charge your cellphones, tablets, kindles etc. at the fastest speed. You can also use it to charge your laptop with 8 in 1 laptop adapters.

Convenient Package & Ultra Compact
The unit is supplied in a fabulous quality semi-hard case featured also a yellow wrist carry strap. Unlike traditional bulky jump starter packs, it's small enough to store in your glovebox and light enough to pack in your bag.

3. 12V to 14.8V Automatic Lead Acid Battery Charger/Maintainer, 1.2A Trickle Charger for car, Truck, Boat, Motorcycle, RV, Lawn Tractor

Feature

TRICKLE CHARGER ----- It can charge all types of 12V lead-acid batteries, including flooded or sealed maintenance free batteries (AGM & gel cell). It's the best smart charger for car, truck, boat, motorcycle, RV, lawn tractor, or any other vehicle with a 12-volt battery.
FULLY AUTOMATIC ----- No need of any manual operation, just plug and leave it for charging and maintaining your batteries automatically for long time. 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.
MICRO-PROCESSOR CONTROLLED PROGRAM ----- No worry about overcharge, short circuit and reverse polarity. Spark-free technology applied. Safer floating charger with maximum voltage up to 14.8 volts.
EASY OPERATION ----- Energy Saving design with one LED indicator to display different charging status. Simply hook up the charger to the battery, plug it in and walk away. Note: be care of the clip positive and negative electrode (Red = positive, Black = negative)
ORION MOTOR TECH offer 5 Years Warranty and full money back guarantee. If you are not satisfied with this product or if you have any question, please feel free to contact us. We would like to issue full refund if finally we could not resolve your problem or you are not satisfied with the result. 1.Go to your amazon account and find the order. 2.Click the seller name (Sold by xxx), then you will enter the store page. 3.Click the yellow button "Ask a question" on top right.

Description


The perfect way to keep 12V vehicle batteries fully charged and ready for use! Compatible with all 12V vehicle batteries, our brand new compact charger efficiently charges your battery and ensure that you are always ready to go. Our product features 3 modes that provide fast and constant charge without overcharging your battery. The optimal charging process guarantees a shorter charging time compared to competition, and it also comes with LED lights to indicate the charging status and a pair of clips for easy hook up.
Specifications:
Model: 12V/1.2A
Dimensions: 3.8 x 1.9 x 2.2 inches
Input Voltage Rating: 110-240V
Recommended Battery Capacity: 12V / 7-10Ah
Input Frequency: 50-60HZ
Maximum Output Power: 15W
Ripple: 120mV
Efficiency (at 100% load): 85%
Current Limit: 1.2A
Leakage Current: 0.25mA
Working Temperature: 50F - 122F
Working Humidity: 5% - 95%
Package includes:
1x 12V battery charger with 2 clips
1x instructions

4. Battery Tender 800 is a SuperSmart Battery Charger that will Constantly Monitor, Charge, and Maintain your Battery. It's Encapsulated and Protected from Moisture by an Electrical Insulation

Feature

800Ma battery charger
Compact design
Highly-efficient surface-mount technology. Includes Alligator Clips and Ring Terminals
Interior is completely encapsulated, protected from shock, vibration & moisture by an electrically insulating, thermally conductive, flame-retardant, synthetic epoxy resin compound
Solid new addition to the Battery Tender family of charger products
This compact 800 mA battery charger has all the charge characteristics of its cousin the Battery Tender Junior
It incorporates highly efficient surface mount technology electronic components
The interior is completely encapsulated, protected from shock, vibration, and moisture by an electrically insulating, thermally conductive, flame retardant, UL recognized, synthetic epoxy resin compound
It's tough, affordable, and a strong, innovative battery charging solution

Description

BATTERY TENDER 022-0150-DL-WH WATERPROOF BATTERY TENDER(R) 800 (022-0150-DL-WH) -

5. NOCO Genius GEN2 20 Amp 2-Bank Waterproof Smart On-Board Battery Charger

Feature

20 Amperes (10 Amperes per bank) Smart On-Board Battery Charger for 12-volt batteries; charges and maintains all types of lead-acid batteries from 25-230Ah, including Wet, Gel, MF, and AGM
Designed for safety; safe for anyone to use; does not generate sparks, and protects against reverse battery hookup, short circuit, open circuit, overheat, overcurrent and does not overcharge the battery
100 percent waterproof; completely sealed to protect against the most extreme environments and rated at IP68
Rapid Charging Technology; Charges batteries 2X faster than traditional battery chargers, and a lightweight, compact design
The most advanced charger ever; it features innovative and advanced technology that makes charging easy and simple; the charger makes important charging decisions so you don't have to. It is the safest, most effective charger you may ever use

Description

The on-board battery charger offers the perfect mix of high-technology and rugged construction. With a fully-sealed, waterproof housing, the GEN1 can be mounted directly onto a variety of applications including boats, tractors and a wide range of equipment. With the intelligent NOCO VosFX processor constantly monitoring the power input, attached battery and charger itself, the GEN1 charger is capable of diagnosing, recovering, charging and maintaining batteries. Automatically adjusts itself to changing current needs. Reverse polarity, short circuit, open circuit, spark proof, overheat, overcurrent and overcharge. High-frequency, high-efficiency for a lightweight, compact charger. Charges batteries 2 times faster than traditional linear battery chargers. 100 per cent full charge even with varying A/C input voltages. Safely charges Wet, Gel, MF and AGM batteries. Automatically shuts off if charger remains in bulk charge mode for an extended period of time. 100 per cent completely sealed. Protects our units from the most extreme environments and rated at IP68. Box includes a charger, owner's manual and user guide and product registration card. 3 Year Limited Warranty and meets ISO 8846 marine standards and ignition protected (US Coast Guard 33 CFR 183.410).

6. Samlex Solar SEC-1230UL SEC-UL Series 12V Battery Charger

Feature

Switch mode technology for high efficiency, lightweight and quiet operation
Automatic operation for ALL Lead Acid Batteries Flooded, AGM or Gel Cell
Protections: Short circuit, overload, reverse battery connection and over temperature
Includes temperature sensor to prevent under/overcharging of battery if temperature varies extensivelyn
2-year warranty / Listed to UL Standard UL-1564, EMI Compliant to FCC Part 15(B), Class B

Description

This advanced fully automatic three-stage battery charger is ideal for charging all types of 12 Volt lead-acid batteries ( Flooded / Absorbed Glass Mat (AGM) / Gel Cell) from a 120 V, 60 Hz or 230 V, 50 Hz AC source. By means of a DIP switch setting, conversion to a two-stage algorithm is possible to charge batteries connected to a DC load (DC UPS). The unit can also be used as a DC Power Supply. Features include overload and short-circuit protection.

7. LST 12V 5A Automatic Battery Charger Maintainer Smart Deep Cycle Trickle Charger for Automotive Car Boat Motorcycle Lawn Mower RV SLA ATV AGM GEL CELL WET& FLOODED Lead Acid Battery

Feature

Intelligent Charging Mode: 7-stages automatic charging process [ Desulfation - SoftStart - BulkCharge - Absorbtion - TestMode - Recondition - Float]by MCU controller, the LED indicator provide visual feedbackofbattery capacity and diagnostic information accordingly, efficiently prolong the lifetime of the battery.
Wide Application: Charge fully drained 12V Pb/SLA/GEL/AGM/VRLA/sealed lead-acid batteries and WET/FLOODED for maintenance, including lawn mower, boat, car, electric vehicle, electric tools, ride-on toys.
Multi-Protection: Ensure ultimate safety protect against Short circuit/OVP/OCP/Overload/Polarity reversed,etc, full-loaded & burn-in testproved to be high efficiency and longevity.
Customized Design: Ultra-compact, portable and lightweight with the mounting holes, non-slipping and easy to carry; Water and dust resistant make it more safe to use in any situations.
What you Get: Come with smart battery charger with 4 DC Adapters, with lifetime quality warranty & 60 days refund & timely after-sale service solve all your problems.

8. Battery Tender 022-0148-DL-WH 12-Volt 4-Bank Battery Management System

Feature

4 independent charging stations
Lightweight design
Microprocessor-controlled constant current charging
Reverse-polarity protected
Spark proof
DC Output Cord Length: 4.5 feet - 18 AWG / DC Output Accessory Length: 1.5 feet
Spark-proof and reverse polarity/short circuit protection and safety timer-72 hours
Contains four independent stations capable of simultaneously charging at 12 volts/1.25 amps per charging bank
Perfect for all AGM (absorbed glass mat), sealed maintenance free and flooded batteries
Microprocessor-controlled constant current charging and temperature compensated to ensure optimum charge voltage according to ambient temperature
Extremely lightweight at less than 3 lbs

Description

The 4 Bank Battery Tender Charging Station is four encased 1.25 amp battery chargers designed to fully charge a battery and maintain it at proper storage voltage without the damaging effects caused by trickle chargers. This charger will operate anywhere in the world

9. CTEK (56-864) MUS4.3 12 Volt Fully Automatic 8 Step Battery Charger

Feature

Fully automatic charging and maintenance in 8 steps maximizesbattery life and performance
Water and dust resistant means it is safe to use in all climate situations
No sparks, short-circuit proof and reverse polarity protected makes it safe for all the vehicles electronics and easy to use
Patented maintenance charge for a unique combination of maximized life and performance
Numerous accessories simplifies using the same charger for multiple battery applications

Description

The CTEK MUS 4.3 battery charger is perfect for those with high demands and can solve a broad range of battery-related problems. It offers state of the art technology that was previously only found in CTEKs professional products and features 8 patented steps to maximize battery life and performance. A few of the key features are a patented de-sulphation process which removes sulfate from the lead plates, a battery diagnosis that shows if a battery can receive and retain a charge, a special reconditioning function that restores stratified and deeply discharged batteries, unique maintenance charging, a mode for optimized charging during cold winter days and the charging of demanding AGM batteries (i.e. Optima). The unique LED display allows the user to follow the entire charging process.

The MUS 4.3 is a non-sparking, short-circuit proof, reverse polarity protected unit designed for untroubled usage and has built in overcharging protection. It is splash, dust and water-resistant so that the solution can be taken to the problem even if it rains or snows.

Included with the MUS 4.3 is the charging unit, a Comfort Connect clamp, a Comfort Connect M6 eyelet and a storage bag. With optional accessories, the charger can to used to charger all your battery needs with a simple quick plug-in, saving time and frustrations especially for those applications that have hard to access batteries.

The MUS 4.3 battery charger has a 5 year Limited warranty

10. Mroinge MBC055 6V and 12V 5.5A Smart Vehicle Battery Charger/Maintainer for Cars, Motorcycles, RVs, TVs, Powersports, Boat and More Vehicle GEL WET AGM Batteries, With IP65 Waterproof

Feature

Separate button is available to select 12V/5.5A,12V/2A,6V/5.5A and 6V/2A mode; Input voltage 100V-120VAC @ 50/60Hz
Perfect for charging 6V and 12V lead-acid, flooded or sealed maintenance free batteries (AGM and gel cell) up to 160Ah, including ATVs, lawn mowers, motorcycles and cars. Safely maintain all types of automotive, RV, lawn & garden and deep-cycle batteries.
No sparks, reverse polarity protection, short-circuit protection, water-resistant (IP65), Bad battery identify and power down memory function.
Adopt 4-stage smart charging and maintains principle (trickle currentconstant current, constant voltage and floating charge.) to ensure maximum battery life and performance.
Intuitive LED indicators provide visual charging state feedback and diagnostic information. Easy connection to vehicle battery using the included battery clips and O-ring terminals. With two year warranty.

Description

Mroinge MBC055 6V/12V Battery Charger is much more than a charger. It has a brain, is lightweight, compact, fully automatic and very easy to use especially in small spaces, that digitally controls the 4 stages of battery charging: trickle current, constant current, constant voltage and floating charge.
The charger come with power down memory function, so the charger will re-start to charge the battery automaticlly when the main power recovered.
This battery charger will keep the battery fully charged so that it is ready to go always. It has a microprocessor controlled fully automatic charger and maintainer and is designed to extend the life of any lead acid battery commonly used in automobiles, motorcycles, ATVs, personal watercraft, RVs, boats, airplanes, golf carts, back-up generator systems, etc. Any vehicle or battery-operated piece of equipment not used on a daily or regular basis is a candidate for a Mroinge charger. The advanced technology will bring the battery back to a full charge without overcharging and then float or maintain the battery for an indefinite period of time. The Mroinge comes equipped with alligator clips and O-ring terminals for easy hook up. The MBC055 battery charger with two year warranty.

WarningYou MUST NOT connect to 24V or otherunsuitable batteries (e.g. NiCd-batteries). The battery charger is not designedas a power supply. Not following these instructions could cause serious personal injury or material damage.

Conclusion

All above are our suggestions for 12v battery charger circuit. This might not suit you, so we prefer that you read all detail information also customer reviews to choose yours. Please also help to share your experience when using 12v battery charger circuit with us by comment in this post. Thank you!

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