The 12 Best 3.7 Volt Battery Charger Circuits (2022 reviews)

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Are you planning to buy 3.7 volt battery charger circuits, and are you confused about the options ?

You have landed on the right page.

Our review process:

Our Top Picks:

Best Overall:
Buy: Energizer 3.7 Volt Battery Charger Circuit
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Best For Remote Control:
Buy: Cosoos 3.7 Volt Battery Charger Circuit
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Best For Safety Protection:
Buy: Keenstone 3.7 Volt Battery Charger Circuit
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Best For Nice Display:
Buy: Xtar 3.7 Volt Battery Charger Circuit
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Best For Same Product:
Buy: Powxs 3.7 Volt Battery Charger Circuit
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Best For Number Of Batteries:
Buy: Wissblue 3.7 Volt Battery Charger Circuit
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Best For Great Item:
Buy: Ebl 3.7 Volt Battery Charger Circuit
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Best For Worth The Money:
Buy: Victagen 3.7 Volt Battery Charger Circuit
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Best For Ultra Fast Charging:
Buy: Gracetop 3.7 Volt Battery Charger Circuit
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Best For Usb Cable:
Buy: Dottmon 3.7 Volt Battery Charger Circuit
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Best For Customer Service:
Buy: Snado 3.7 Volt Battery Charger Circuit
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Best For Battery Protection:
Buy: Anmbest 3.7 Volt Battery Charger Circuit
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Best Overall: Energizer 3.7 Volt Battery Charger Circuit

Energizer 3.7 Volt Battery Charger Circuit
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The circuit is a must have add-on for your daily use. The Energizer 3.7 Volt Battery Charger Circuit is equipped with audio and visual alerts. Generates a repetitive audible beep upon detection. The pro charger automatically shuts off the circuit when the batteries are fully charged.

Lastly, the energizer 3.7 volt battery charger circuit features prevent damage from overcharging, helping to maximize battery life.

Almost all customers agree that the circuit is a great little charger for your rechargeable batteries. And, a few also found that the circuit did the job and the thebatteries worked perfectly. In addition, they strongly agree that this is an adequate charger, but the low mah of the included batteries certainly detracts from its potential.

Top Customer Quotes:
  • This is great to use with kids ‘ toys that constantly need new batteries.
  • It is so cheap to buy a 48 aa battery pack at Costco.
  • This is great and be really useful.
  • This can be reused rather than wasting money throwing them away.

Best For Remote Control: Cosoos 3.7 Volt Battery Charger Circuit

Cosoos 3.7 Volt Battery Charger Circuit
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Compared with other circuits in this category, the Cosoos 3.7 Volt Battery Charger Circuit has a convenient design. The cosoos 3.7 volt battery charger circuit is used for holiday gift choice, It charges well and has an excellent design. The Manufacturer says: If the battery is over discharged, our smart charger can even activate this battery. The lcd back – light will become dark after 1 minute without any operation.

The charger is damaged, lcd display will show error and stop charging. Further, it is made worth the money and it is outstanding. Lastly, the cosoos 3.7 volt battery charger circuit is made of PC fire retardant material, with excellent heat dissipation and electronic circuit design.

Most buyers agree that the charger was made in Chinese plus the features worked as described. Moreover, they strongly agree that the circuit will continue until finished, at which time the capacity of the battery will be shown. In addition, they strongly agree that this charger supports 3.6v charging, but the user may have to select the option.

Top Customer Quotes:
  • This includes battery depletion and capacity measures.
  • This does plug into an outlet & the plug detaches from the unit.
  • The myboxer charger will show the accumulated battery capacity in mah.
  • This intelligent battery charger can charge 4 rechargeable types of chargeable batteries simultaneously.

Best For Safety Protection: Keenstone 3.7 Volt Battery Charger Circuit

Keenstone 3.7 Volt Battery Charger Circuit
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The Keenstone 3.7 Volt Battery Charger Circuit should be able to handle its purpose and duties with ease. And, the keenstone 3.7 volt battery charger circuit features over-charge prevention to protect batteries automatically. Make sure this fits by entering your model number. The 18650 battery charger can monitor the state of batteries in terms of voltage, current, temperature, time under charge to prevent overcharging, overheating, short circuits and so forth. Most importantly, the keenstone 3.7 volt battery charger circuit is available in grey and black colors.

Almost all customers quickly discovered that the charger is able to recharge them back to 100. Also, a few say that the charger is a big bang for the buck charger imho. Further, a few also found that this charger has an adjustable mechanism that can also fit larger physical size and smaller ones.

Top Customer Quotes:
  • This is used to hold on the back cover.
  • 4 independently bay, 2 charge curent (500ma, 1000ma) to meet your various needs.
  • This comes with the ability to plug directly into a car cigarette outlet.
  • This can be used in any available charging port.

Best For Nice Display: Xtar 3.7 Volt Battery Charger Circuit

Xtar 3.7 Volt Battery Charger Circuit
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The Xtar line of circuit comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Xtar 3.7 Volt Battery Charger Circuit has take care, It is good for high capacity and has a compact design. The smart lcd screen will show charging current, battery voltage, charging capacity of the rechargeable batteries from top to bottom in tachometer style when the xtar vc4 battery charger is connected to the power supply and batteries are inserted. The upgraded chips equip vc4 battery charger with functions of multiple protection, smart lcd display, 0v activation and etc.

Above all, the xtar 3.7 volt battery charger circuit is displayed in an innovative tachometer-style.

Almost all buyers quickly discovered that the charger does everything they say it does in the description. Moreover, a few also found that the circuit can tell if the cell insert is nimh, li-ion or alkaline, and select the charging algorithm accordingly. In addition, they also found that the circuit has a usb connection cable, so it is simple.

Top Customer Quotes:
  • This will restart after loss of power.
  • This can be used as emergency charging.
  • This has reverse polarity protection and will not overcharge a battery.
  • This can accept old cells with higher internal impedance.

Best For Same Product: Powxs 3.7 Volt Battery Charger Circuit

Powxs 3.7 Volt Battery Charger Circuit
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Best part: Powxs 3.7 Volt Battery Charger Circuit costs comparatively low and it is available to ship in 24 hours. The powxs 3.7 volt battery charger circuit works perfectly, is inexpensive, it gets the job done and has a smart design. With smart lcd display, powxs universal aa aaa battery charger can easily let you know about the charging process. The intelligent battery charger comes with type – c & worldwide usage usb input, applicable for 5v/2a power bank, computer, car charger, usb wall charger, etc.

The charger does the job and has a great design. Also, it has hold charge, it is used for the same product and has a new design. Finally, the powxs 3.7 volt batterycharger circuit offered by other brands, It is remote and has a travel design.

Most buyers agree that the charger can work as a charger and table lamp at the same time. And, a few say that the circuit is nice, very nice, little charger for 2 88650 flat top batteries. Moreover, a few also found that this charger can recharge up to 4 batteries at one time, and uses usb for its power source. With no doubts, this product passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • Nice, but it would have been nice to have a power adapter.
  • This is white, kind of, it is strong and has a simple design.
  • This can recharge two 88650 batteries in an hour, max.
  • It is easy to identify when batteries are fully charged.

Best For Number Of Batteries: Wissblue 3.7 Volt Battery Charger Circuit

Wissblue 3.7 Volt Battery Charger Circuit
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The Wissblue 3.7 Volt Battery Charger Circuit is specially designed for your daily purpose and has all useful features. The wissblue 3.7 voltbattery charger circuit is for overheat protection, It works perfectly and has a new design. Portable 3.7in*4.7in size, become your travel companion. The 4 – slot design can charge 4 different batteries at the same time.

The charger has overcharge protection, it is more durable and has a great design. Also, it allows for independent charging, great so far, it comes with battery level and has a smart design. Most importantly, the wissblue 3.7 volt battery charger circuit is compatible with all 3.7v lithium batteries and 1.2v nimh / nicd aa batteries.

Most customers opine that the charger can be used on a desktop or in a vehicle. Moreover, a few strongly agree that the circuit comes with a good-sized USB cable. Also, they also found that the charger also has different indicators when placing batteries in the charger. Overall, at the price, they believe that they got a steal of a deal with it.

Top Customer Quotes:
  • This is made of flame-retardant material,durable and is safe.
  • These are depleted and thought of throwing them away.
  • This is great for seeing how much charge the batteries currently have in them.
  • This is easy to power with any usb adapter, making it very convenient and portable.

Best For Great Item: Ebl 3.7 Volt Battery Charger Circuit

Ebl 3.7 Volt Battery Charger Circuit
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Next on the list, we’ve got yet another circuit that manages to win our hearts. It’s the Ebl 3.7 Volt Battery Charger Circuit and it’s widely considered as the circuit that has the most suitable features. The ebl 3.7 volt battery charger circuit is very durable and it is good for high end. The surface temperature of the charger is 35. And, the charger is designed for alkaline batteries, is user-friendly, it worked well and has a cover design.

The charger charged fully, it works very well and has a great design. And, it does the job, is used for other battery types, It is followed by shutoff and has an excellent design. Finally, the ebl 3.7volt battery chargercircuit is worth the money, is great at a nice price, It worked like a charm and has a smart design.

Almost all buyers quickly discovered that the charger works well. no problems yet. And, a few say that the circuit is very light… so much so that it feels a little cheesy, but it functions exceedingly well. Moreover, they strongly agree that the charger is easy to use with clear led indicators.

Top Customer Quotes:
  • This is a good charger for li-ion 3.7 volt batteries.
  • This is so versatile in also charging other sized batteries, particularly the c battery.
  • This works with 18650 cells but the label on the device doesn’t.
  • This does not have reverse polarity protection.

Best For Worth The Money: Victagen 3.7 Volt Battery Charger Circuit

Victagen 3.7 Volt Battery Charger Circuit
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Victagen offers a variety of chargers for personal choice and yet maintains quality in all the variants. The Victagen 3.7 Volt Battery Charger Circuit comes with a great deal, charged fully, it has hold a charge and has an excellent design. Make sure this fits by entering your model number. This 2 – slot battery charger complies with the directives and standards requirements by ce rohs fcc ul.built – in intelligent circuit protection will protect against short circuits, overheating, over voltage. Meanwhile, the discharge function can decrease damage to the battery.

The charger is like a li-ion and it does the job. And, the circuit is good for rapid charging and it is compact. Above all, the victagen 3.7 volt battery charger circuit is great with a good charge rate and has a smart design.

Almost all customers agree that the charger works well so far, plus it reduces the charge times. In addition, they also found that the circuit was perfectly fine until one of the batteries decided to leak, causing damage. Moreover, a few say that the charger has circuitry to detect the battery type to avoid overcharging, which is very important to prevent battery case rupture or combustion.

Top Customer Quotes:
  • The charger with charged batteries can be used as a battery extender.
  • This item has a wire with a usb to microusb conversion.
  • Manufacturer says: Victagen strives to provide 100% satisfactory products and service to our customers.
  • This comes with two very nice 18650 batteries for the price.

Best For Ultra Fast Charging: Gracetop 3.7 Volt Battery Charger Circuit

Gracetop 3.7 Volt Battery Charger Circuit
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Gracetop is known for creating pragmatic and minimalist chargers for people on the go, and its line of Gracetop 3.7 Volt Battery Charger Circuits definitely falls in line with that reputation. The gracetop 3.7 volt battery charger circuit kind of, it has protect opposite connection and has a simple design. You can charge various 3.7v batteries : 22650, 18650, 18490, 18350, 17670, 17500, 16340, 14500, 10440. The charger indicator light shows red when the batteries are charged, and shows green when the batteries are full.

The circuit comes with a red/green led light display, safe and fire prevention pc+abs material battery charger, with heat-resisting, low temperature resistance and scratch resistance. Further, the charger provides great value, looks great and it is designed for ultra fast charging. Finally, the gracetop 3.7 voltbattery charger circuit provides customers with a 30 – day money back guarantee and 1 – year warranty service.

Almost all customers find that the circuit would operate off of a computer or plug in a usb port. Moreover, a few strongly agree that the charger is great for slightly over a year. In addition, a few also found that this well-priced charger is the perfect solution. Obviously, this charger passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • All these built-in safety features ensure your safety and the health of the battery.
  • These feature heat dispersion and reverse polarity protection.
  • Gracetop smart batterycharger will give you the best product experience.
  • Led shows you the charging status and charging level of each battery.

Best For Usb Cable: Dottmon 3.7 Volt Battery Charger Circuit

Dottmon 3.7 Volt Battery Charger Circuit
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Compared with other circuits in this category, the Dottmon 3.7 Volt Battery Charger Circuit has a convenient design. The dottmon 3.7volt battery charger circuit makes for a great display and has a great design. Prevents against the damaging effects of overheating and overcharging your rechargeable batteries. In addition, it is perfect for fine material,ss it is compact and has an excellent design.

The charger has real capacity, is very good, it allows for a battery storage case and has a compact design. Further, this has prevented reverse and it does a great job. Finally, the dottmon 3.7 volt battery chargercircuit is easy to see, it has input power and has a new design.

Most customers found that the circuit comes with plastic over the lcd display. Also, a few also found that the charger does a great job displaying the info and charging the batteries. And, a few strongly agree that the charger works well and shuts off when the batteries are complete. Without any doubt, this product passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • 🔋Intelligent detection: read the real capacity of batteries charged from 0 up to 100%.
  • This is for smooth surface, it is easy to install and has a smart design.
  • This is recommended to charge with 5v2a.
  • 🔋Safety performance: prevent reverse, short circuit, overcharge, over-discharge, over-current.

Best For Customer Service: Snado 3.7 Volt Battery Charger Circuit

Snado 3.7 Volt Battery Charger Circuit
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The Snado 3.7 Volt Battery Charger Circuit is capable of outshining several other chargers featured in this list in overall features for the price point. The snado 3.7 volt battery charger circuit is compatible with different brand ni-mh / ni-cad batteries included but not limited. The Manufacturer says: Our charger can detect the true capacity of the battery. These have protection against short circuits, overheating, over – voltage and over – discharge.

The circuit is strong, has input current and there is much more. Also, the circuit has features for a great price, is really good and it comes with a great deal. Lastly, the snado 3.7 volt battery charger circuit is easy to charge, is powerful and it makes for excellent quality.

Most buyers agree that the charger is nice to be able to charge quickly when needed. And, a few also found that the charger will not check the charge on non-rechargeable batteries. Moreover, a few also found that the charger is great for all sizes of batteries. Obviously, this charger passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • This does show the capacity and the means.
  • Snado d4 battery charger can work with the following batteries.
  • This has take care and it has changed batteries.
  • This will take most li-ion cells.

Best For Battery Protection: Anmbest 3.7 Volt Battery Charger Circuit

Anmbest 3.7 Volt Battery Charger Circuit
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Not everyone likes to purchase circuits for their daily usage, but the greatest 3.7 volt battery charger circuit would be an anomoly. The Anmbest 3.7 Volt Battery Charger Circuit works perfectly and it gets the job done. A combination of 4 safety features that work together to provide ultimate protection for your devices, your chargers and, most importantly. ,. Also, it is crafted with fine workmanship, it is very good and has a smart design.

The charger comes with over charge, over discharge, over current, short circuit protection function, for a variety of different shapes of 3.7v capacity lithium batteries. Finally, the anmbest 3.7 volt battery charger circuit is inexpensive, is great for low cost, it works properly and has a compact design.

Almost all buyers opine that the charger will create voltage on those pads. Moreover, they strongly agree that the circuit uses a 9v-2amp wall brick charging the two li-ion cells and also operates 24v led from a boost circuit. Further, they also found that the charger is used for 2 parallel 3 series battery packs. To sum up, at the price, they believe that they got a steal of a deal with it.

Top Customer Quotes:
  • This works well for its compact size and has a simple design.
  • This is used for high – current devices like power tools, etc.
  • This is perfect for battery protection, it has overcharge protection and has a new design.
  • This has delayed self-recovery,. It is highly durable and has a great design.

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