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๐ Stay powered, stay unstoppable โ the battery that works as hard as you do.
The NERMAK 3.7V 3200mAh USB Rechargeable Lithium Ion Battery (2-pack) offers high-capacity, versatile power with built-in USB-C charging and output. Designed for flashlights, headlamps, bike lights, and Bluetooth speakers, it delivers over 1500 recharge cycles with advanced safety features, making it a reliable, eco-friendly replacement battery for busy professionals.
| ASIN | B0C8G8Y3JF |
| Amperage | 3200 Milliamps |
| Antenna Location | Flashlights |
| Battery Capacity | 3200 Milliamp Hours |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 2.2 Ounces |
| Best Sellers Rank | #14,476 in Health & Household ( See Top 100 in Health & Household ) #1 in 3.7V Batteries |
| Brand | NERMAK |
| Customer Reviews | 4.1 4.1 out of 5 stars (263) |
| Item Dimensions | 2.85 x 0.75 x 0.75 inches |
| Manufacturer | NERAMAK |
| Model Name | series,x |
| Model Number | 18700 |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Reusability | Rechargeable |
| Unit Count | 2.0 Count |
| Voltage | 3.7 Volts |
| Warranty Description | 1 year |
S**V
includes a charger!
Very cool product. My bike light that used this format was unreliable on charging. This battery with its usb C port built in mad that a non issue. Very cool and very long burn. Love it so far.
S**A
USB-C does work, both in and out
I admit I was skeptical, but they do work as described. USB-C is both in and out. I tested it on an old phone and it does charge. Slowly, but it will charge it. Also charged them with a standard 110v charger for Lithium Ion batteries and they charged that way just fine.
K**.
Battery
I received the batteries the other day. After charging them one battery didnt work. The company reached out to me and i explained that after charging one battery didnt work. They sent out 2 new ones for me. I really appreciate the customer service! The battery did work very well for what i needed it for. Thank you again!
R**Y
One of the batteries burnt up on 2nd charge.
One battery only charged up one time. On the 2nd charge it got a little hot and smelled. It won't charge anymore.
J**J
Good customer service
Good customer service. Didn't fit my device. Return for full refund was easy and uncomplicated.
M**M
Highly recommend this seller.
Secure Check out . Seller has high quality merchandise at a fair price and packs each item securely, in a waterproof package, with adequate padding to protect it in shipment. Fast to get the package out & on its way. Photos are always highly representative & allow the item to be viewed so it always arrives as described.
J**S
Good battery but it's very long!
These are good batteries but you need to be aware of their length. There is a very good chance it will be too long for your device. It will definitely not fit the devices that require a flat top battery. It is about a 1/4" longer that the average battery with the button on the positive end. Point being, measure your current battery before purchasing these. As long as it will fit your device, it should work well. It will work OK in high drain items such as a flashlight. The USB C connector makes it easier to charge. It will also charge the normal way as long as it will fit in your device or your charger. The won't fit any of my chargers.
A**M
Excellent Buy
It works as designed. I am very pleased.
Trustpilot
2 weeks ago
1 month ago