There are several advantages of having a 3.7 volt battery charger adapter. Let’s take you step by step, type by type, and find the best 3.7 volt battery charger adapter for you.

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Our Top Picks:

Best Overall: Buy: Snado 3.7 Volt Battery Charger Adapter READ REVIEW

Best For Long Charge Time: Buy: Ebl 3.7 Volt Battery Charger Adapter READ REVIEW

Best For Ultra Fast Charging: Buy: Gracetop 3.7 Volt Battery Charger Adapter READ REVIEW

Best For Full Power: Buy: Eastshine 3.7 Volt Battery Charger Adapter READ REVIEW

Best For Usb Cable: Buy: Xtar 3.7 Volt Battery Charger Adapter READ REVIEW

Best For Input Voltage: Buy: Icreatin 3.7 Volt Battery Charger Adapter READ REVIEW

Best For Customer Service: Buy: Merom 3.7 Volt Battery Charger Adapter READ REVIEW

Best For High Capacity: Buy: Imren 3.7 Volt Battery Charger Adapter READ REVIEW

Best For Special Note: Buy: Noyito 3.7 Volt Battery Charger Adapter READ REVIEW

Best For Power Bank: Buy: Beston 3.7 Volt Battery Charger Adapter READ REVIEW

Best For Alkaline Batteries: Buy: Raynaks 3.7 Volt Battery Charger Adapter READ REVIEW

Best Overall: Snado 3.7 Volt Battery Charger Adapter

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The look and feel of these chargers are consistent with the high quality we're used to from the rest of Snado's lineup. The Snado 3.7 Volt Battery Charger Adapter is best for high capacity and has a simple design. The Manufacturer says: We guarantee the quality before the item ships. Note: If the temperature of the charger or battery gets too high when charging.

The adapter is highly recommend, comes with a power input and it is dependable. Finally, the snado 3.7 volt battery charger adapter will stop once completing charge.

Most customers opine that the adapter takes 3-4 hours to charge a discharged battery. In addition, they also found that the adapter is easy to use, does a thorough job and it does it in a timely fashion. In addition, a few say that this charger only outputs at 1.48v or 4.2v and is thus well out of spec for charging 3.2v lifepo4 batteries. Therefore, buyers were eager to recommend it to friends and families.

• This can do real time charging status, It is lightweight and has a great design.
• This charger is great for charging the 18650 li - ion batteries.
• Snado focuses on product quality, innovation, value and customer well-pleasing.
• This has always worked great and can be used in a vehicle regularly.

Best For Long Charge Time: Ebl 3.7 Volt Battery Charger Adapter

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The Ebl 3.7 Volt Battery Charger Adapter is suitable and reliable and fits well with your daily purpose. The ebl 3.7 volt battery charger adapter is good value, is best for full load power consumption, It works fine and has a simple design. Use a high quality 18650 battery charger with multiple protection. The indicator light turns into green once the battery voltage reaches 4.1v-4.2v.

The charger is efficient and it is very lightweight. In addition, the charger works well and it gets the job done. Lastly, the ebl 3.7 volt battery charger adapter provides great value, is positive, It is very good and has a smart design.

Almost all buyers found that the adapter came with a real power cord, it has a usb cable. Also, a few strongly agree that the adapter works with any USB to micro USB cable to charge the batteries. Moreover, they say that this charger will stop at 4.22vdc, which your battery wants to stop about 3.3 - 3.7 .... that would cause problems.

• The charger light would never change to green, indicating a full charge.
• This provides good service and it is a win - win situation.
• This is inexpensive, it is great for low cost and has a great design.
• This is good for more safety and it works well.

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

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The Gracetop 3.7 Volt Battery Charger Adapter is capable of outshining several other chargers featured in this list in overall features for the price point. The gracetop 3.7 volt battery charger adapter is used for individual charging slots and it looks great. The latest design usb port battery charger, battery charger operating voltage is 5v, so do not worry about high voltage bringing you harm and disaster. The universal battery charger with 4 charging slots can set the single - channel charging current up to 1.5a max.

Most importantly, the gracetop 3.7 volt battery charger adapter provides great value, is very handy, it is charge current and has a new design.

Almost all customers opine that the adapter is great for slightly over a year. Moreover, they say that the adapter will operate off of a computer or plug in a usb port. Moreover, a few strongly agree that this usb charger charged 4 lithium 16340 batteries in 2 1/2 hours. In conclusion, the tone of buyers is very positive and we believe that the charger suits the purpose.

• Gracetop smart battery charger will give you the best product experience.
• This can be used in any environment, power bank, car adapter, computer, usb power adapter.
• Led shows you the charging status and charging level of each battery.
• The light on each bay will turn green when the battery is charged.

Best For Full Power: Eastshine 3.7 Volt Battery Charger Adapter

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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate charger. The Eastshine 3.7 Volt Battery Charger Adapter is exactly that - it's a simple charger that hits all the right notes. The eastshine 3.7 volt battery charger adapter has a lcd display, charges pretty quick, it has an output voltage and has a smart design. Make sure this fits by entering your model number. And, it is very good. It is compact and has a great design.

Lastly, the eastshine 3.7 volt battery charger adapter has a short-circuit, It is intuitive and has a compact design.

One customer says - "Car adapter needs to be ordered separately. ". Almost all customers opine that the adapter works with lifepo4 types. In conclusion, for almost all customers, it was what they were looking for.

• You will love the fast charger for 4 cells simultaneously.
• This is made from abs, v0 class fire-retardant materials.
• Good brand reputation.

Best For Usb Cable: Xtar 3.7 Volt Battery Charger Adapter

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Xtar makes beautiful and great charger with classic and smartly chosen materials. The Xtar 3.7 Volt Battery Charger Adapter can charge max 4pack protected 20700/21700 batteries. You can know the charging status clearly. Also, it has an lcd display, automatically detects battery status and it has type-c.

Lastly, the xtar 3.7 volt batterycharger adapter is compatible with all 5v usb power.

Most customers agree that the charger will charge 3.7 volt ion batteries. Further, a few strongly agree that the charger is kind of misleading, but unfortunately it does use a usb C port on the device, so it is technically correct. Moreover, a few strongly agree that the adapters are charging pretty quick. and has held up for the past month. To sum up, at the price, they believe that they got a steal of a deal with it.

• This is perfect for a great price, works well and it works as intended.
• This comes with intelligent circuits, fire retardant materials.
• This is designed to work with standard USB c pinned cables.
• This can choose 1a/0.5a charging current, only ch1 and ch4 have 1.0a charging current.

Best For Input Voltage: Icreatin 3.7 Volt Battery Charger Adapter

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The features department is where the Icreatin 3.7 Volt Battery Charger Adapter truly manages to shine. The icreatin 3.7 voltbattery charger adapter comes with over-current protection, over-discharge protection, over-voltage protection, overcharge protection, short circuit protection.（enter protection mode, with flashing red light. 1.before buying, be sure to confirm that the interface size of this product matches with yours. This product is 5.5x2.1 mm.

The adapter has many kinds of protection functions, Enter the protection mode, lead lights will flash red. In addition, this is good for input voltage and it is wrong. Lastly, the icreatin 3.7volt battery charger adapter works well and it works well for good quality.

Almost all buyers opine that the adapter is great as a tablet charger with a broken usb charger port. Further, they also found that the way it 's supposed to and keeps the light charged. Overall, most buyers found the adapter suited best, and no one questions it.

• Output: dc 4.2v 2a (suitable for 3.7v 4.2v 1-string lithium battery pack).
• Output wire length: 1m / 3.28ft.
• New and hot releases.

Best For Customer Service: Merom 3.7 Volt Battery Charger Adapter

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We would, of course, be remiss if we didn't mention Merom 3.7 Volt Battery Charger Adapter for daily use. The merom 3.7 volt battery chargeradapter has many kinds of protection functions, Enter the protection mode, led lights will flash red light. 1.before buying, be sure to confirm that the interface size of this product matches with yours. This product is 5.5x2.1 mm.

The charger is good for input voltage, is not and it is great for customer service. Lastly, the merom 3.7 volt battery charger adapter comes with over-current protection, over-discharge protection, over-voltage protection, overcharge protection, short circuit protection.（enter protection mode, with flashing red light.

• 【Compatibility】for 3.7v li-ion packs charger ,suitable for 3.7v 4.2v 1-string lithium battery pack.
• This is suitable for a 3.7v 4.2v 1-string lithium battery pack.
• New and hot releases.

Best For High Capacity: Imren 3.7 Volt Battery Charger Adapter

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The Imren 3.7 Volt Battery Charger Adapter's material feels more premium than its price would suggest. The imren 3.7 volt battery charger adapter is suitable for the whole world, car adapter is available. This 18650 battery charger is small enough that you can throw it in your pocket or purse, the best choice for traveling. The intelligent battery charger comes with worldwide usage usb input, applicable for 5v/2a power bank, computer, car charger, usb wall charger, etc.

The charger works with a high capacity, works fine and it is compact. Further, it is efficient, extremely compact and it works awesome. Finally, the imren 3.7 volt batterycharger adapter is more durable and smooth.

One customer says - "Definitely worth the money if you have a vape and you want to charge the batteries and swap out chargers quickly and it’s very simple to understand. ". Most customers quickly discovered that the chargers are direct replacement batteries for a focis v carta. To sum up, many buyers have used the imren 3.7 voltbattery charger adapter for more than a few months without any complaints, and it shows no sign of giving up.

• Hour after-sales service and will serve you wholeheartedly.
• Note: if the temperature of the charger or battery gets too high when charging.
• Lot of satisfied buyers.

Best For Special Note: Noyito 3.7 Volt Battery Charger Adapter

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The Noyito 3.7 Volt Battery Charger Adapter should be able to handle its purpose and duties with ease. The noyito 3.7volt battery charger adapter has many kinds of protection functions, Enter the protection mode, led lights will flash red light. Normally, the specifications of the DC port of the device will be marked on your device manual or label. This product is 5.5x2.5 / 2.1 mm.

The charger is suitable for devices with the same specification dc interface. Most importantly, the noyito 3.7 volt battery chargeradapter is wrong and it is great for special note.

With no doubts, this adapter passed the test and had very satisfied buyers eager to share their experience.

• Good brand reputation.
• Delivers what they promise.

Best For Power Bank: Beston 3.7 Volt Battery Charger Adapter

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Best part: Beston 3.7 Volt Battery Charger Adapter costs comparatively low and it is available to ship in 24 hours. The beston 3.7 volt battery charger adapter will be a good replacement for 3.7v li-ion 18650 16340 16650 17650 17670 18350 18490 18500 20700 21700 26650 rechargeable battery chargers. Universal micro usb input can be powered by any usb 5v output, such as wall charger, mobile power, car charger, etc. The light displays red, and will turn to green when fully charged.

Lastly, the beston 3.7 volt battery charger adapter is compatible with cylindrical 3.7v (3.6v) li-ion imr inr icr 18650 18490 18500 18350 17670 16340 rcr123a 14500 10440 batteries and etc.

To sum up, at the price, they believe that they got a steal of a deal with it.

• This works well for high temperature protection and it is great for temperature protection.
• Each charging slot works independently.
• One of the newcomers and featured product.

Best For Alkaline Batteries: Raynaks 3.7 Volt Battery Charger Adapter

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Not everyone likes to purchase an adapter for their daily usage, but the Raynaks 3.7 volt battery charger adapter would be an anomoly. The Raynaks 3.7 volt battery charger adapter works as described and it works very well. Always store your battery charger safely out of the reach of children and pet. Moreover, the adapter works with alkaline batteries very well.

Finally, the Raynaks 3.7 Volt Battery Charger Adapter is compatible with 3.6v 3.7v 4.2v 21700 20700 circuit protected li-ion batteries.

With no doubts, this product passed the test and had very satisfied buyers eager to share their experience.

• This is ready to use, is really good and it comes with a defective battery.
• Safety protection/ overcharging prevention/ overvoltage prevention/ overcurrent prevention/ reversed polarity prevention.
• Speedy charging equally one independent battery or two batteries.
• Do not disassemble or reassemble the charger by yourself for safety reasons.