The Best 3.7V 400Mah Battery of 2025 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best 3.7V 400Mah Battery of 2025. Check our ranking below.

2,145 Reviews Scanned

Rank No. #1

Fytoo 5PCS 3.7V 400mAh Lithium Battery with 5 in 1 Charger for SYMA Q11 H99W H31 H6C H98 AT-96 TR-C385 TR-P51 TR-F22 Quadcopter Spare Parts Aircraft Model Drone Battery (Black)

For H99W H31 H6C H98 AT-96 TR-C385 TR-P51 TR-F22 SYMA Q11 quadcopter
Can charging 5 batteries at one time, over charge protection, short circuit protection.
Charging indication: when the charging cable is connected to the power supply and accessed to charge the battery, the red charging indicator light is always on, and when the battery is fully charged, the red light is off.
Good product with superior material, which is more durable & practical, and not easy to damage. Built-in protection mechanism ensures safe charging and use.
Package Content: 5PCS 3.7V 400mAh lithium battery with 5 in 1 charger

Rank No. #2

AKZYTUE 3.7V 400mAh 802525 Lipo Rechargeable Lithium Polymer Ion Battery Pack with PH2.0mm JST Connector

Connector Compatibility Warning: The batteries connectors type are all JST PH2.0MM. Please make sure that the CONNECTOR TYPE, POLARITY, and BATTERY SIZE match your device before purchasing. If the POLARITY of the connector DOES NOT MATCH that of your device, it will DAMAGE the device or the new battery
Battery Specifications: Voltage: 3.7volt; Capacity: 400mAh; Maximum Charge Voltage/Current: 4.25V/200mAh; Material: Lithium Polymer
Physical Dimensions: Connector Type: PH 2.0mm; Size: 8.6 x 25 x 25mm / 0.34 x 0.98 x 0.98 inches (T*W*L); Cable Length: 5cm / 2 inches; Net Weight: 10g
Usage Limitation Notice: The 3.7V 400mAh 802525 Lithium Battery is NON-POWER BATTERY. It can not be used for power device that require high current such as UAV, mini RC Helicopter, RC small drones, Model aircraft, Electric toys, Power tools and other high-drain devices
Compatible Applications: Suitable for MP3/MP4, Bluetooth wireless headset, GPS, baby monitor, game boy, skybell, smart watch, monitoring units, POS machine, dashcam, mobile power, Bluetooth speaker, VR glasses, beauty devices, pet tracker, ring video doorbell and similar low-power electronic devices

Rank No. #3

Qimoo 802525 3.7V 400mAh LiPo Battery - Rechargeable Lithium Polymer Battery with Protection Board and Micro JST 1.25 Connector for Electronic Device

[Note]- 3.7v lipo battery connector type is JST 1.25MM !!!! - Please make sure the connector type and battery size match your device before purchase.
[Connector Specifications]-3.7v battery Connector Type: PH 1.25mm;; Cable Length: 5cm / 2"; Please check the battery polarity before installation, if the connector polarity is not matched with your device, it will damage the device or new battery.
[Battery Specifications] - 802525 li-ion battery size: 8.6 x 25 x 25mm / 0.34" x 0.98" x 0.98"(H*W*L), Voltage: 3.7 volts, Maximum Charging Voltage 4.25v; Capacity: 400mAh; Material: Lithium Polymer. Net weight: 10g.
[Applications]- 3.7v lithiun Polymer battery is suitable for MP3/MP4, Bluetooth wireless headset, GPS, baby monitor, game console, skype, smart watch, surveillance device, POS, car recorder, mobile power, Bluetooth speaker, VR glasses, beauty device, pet tracker, ring visual doorbell, etc.
Please use the battery correctly: 3.7v lithium batteries can not be used for high-current power devices, such as drones, miniature remote control helicopters, model airplanes, electric toys, etc.

Last update on 2026-06-28 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API

How Do You Buy The Best 3.7V 400Mah Battery?

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We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 3.7V 400Mah Battery that you consider buying. Your questions might include the following:

Is it worth buying an 3.7V 400Mah Battery?
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We’re convinced that you likely have far more questions than just these regarding 3.7V 400Mah Battery, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 3.7V 400Mah Battery, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 3.7V 400Mah Battery. Make sure that you are only using trustworthy and credible websites and sources.

We provide an 3.7V 400Mah Battery buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 3.7V 400Mah Battery currently available on the market.

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Brand Value: Every brand of 3.7V 400Mah Battery has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
Features: What bells and whistles matter for an 3.7V 400Mah Battery?
Specifications: How powerful they are can be measured.
Product Value: This simply is how much bang for the buck you get from your 3.7V 400Mah Battery.
Customer Ratings: Number ratings grade 3.7V 400Mah Battery objectively.
Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 3.7V 400Mah Battery.
Product Quality: You don’t always get what you pay for with an 3.7V 400Mah Battery, sometimes less, and sometimes more.
Product Reliability: How sturdy and durable an 3.7V 400Mah Battery is should be an indication of how long it will work out for you.

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The Best 3.7V 400Mah Battery of 2025 – Reviewed and Top Rated

How Do You Buy The Best 3.7V 400Mah Battery?

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