18650 Battery Capacity Chart

Are you looking for the perfect 18650 battery for your device, but you’re not sure which one to choose? Don’t worry; we’ve got you covered. In this guide, we’ll take a closer look at the 18650 battery capacity chart, and help you choose the perfect battery for your needs.

18650 Battery Capacity Chart

Brand Model Capacity (mAh) Max Discharge (A) Max Charge (A)
Samsung INR18650-25R 2500 20 2.5
LG INR18650-HG2 3000 20 2.5
Sony US18650VTC5 2500 30 2.5
Panasonic NCR18650B 3400 10 2.5
Sanyo UR18650NSX 3000 20 2.5
Efest IMR18650 2500 20 2.5
Samsung INR18650-30Q 3000 15 4.0
LG INR18650MJ1 3500 10 2.5
Sony US18650VTC4 2100 30 2.5
Panasonic NCR18650GA 3500 20 2.5
Sanyo UR18650F 2200 20 2.5
Efest IMR18650H 2200 20 2.5
Samsung INR18650-35E 3500 15 4.0
LG INR18650MH1 3000 10 2.5
Sony US18650VTC3 1600 30 2.5
Panasonic NCR18650PF 2900 20 2.5
Sanyo UR18650P 2100 20 2.5
Efest IMR18650V1 2100 20 2.5

What is the highest capacity 18650 battery?

The highest capacity 18650 batteries in the market are the 3500mAh 18650s. These batteries are perfect for high-drain applications such as vaping, flashlights, and power banks. However, it’s important to note that higher capacity batteries often have a lower discharge rate, meaning they might not be suitable for devices that require a high discharge rate.

How do you calculate 18650 battery capacity?

Calculating the capacity of an 18650 battery is relatively simple. All you need to do is multiply the voltage of the battery by its amp-hours (Ah) rating. For instance, a 3.7V battery with an Ah rating of 2.5 will have a capacity of 9.25Wh.

What is the max wattage for 18650?

The maximum wattage for an 18650 battery depends on its discharge rate. Typically, 18650 batteries with a high discharge rate of 20A or more can handle wattages of up to 80W, while those with a lower discharge rate might only handle wattages of up to 40W. It’s important to choose the right battery for your device to prevent overheating or other safety hazards.

Can 18650 batteries overcharge?

Yes, 18650 batteries can overcharge, and it’s important to avoid overcharging them to prevent damage to the battery or device. Fortunately, most 18650 batteries come with built-in protection circuits that prevent overcharging. However, it’s still a good practice to check your battery’s charging progress occasionally and remove it from the charger once it’s fully charged.


Choosing the right 18650 battery for your device can make a significant difference in your device’s performance and longevity. Make sure to consider factors such as capacity, discharge rate, and wattage when selecting your battery. And, always follow the manufacturer’s recommendations and best practices for charging and using your batteries to ensure your safety and the longevity of your device.

About the author, Phil Borges

Phil Borges is a battery aficionado. He's written extensively about batteries, and he loves nothing more than discussing the latest innovations in the industry. He has a deep understanding of how batteries work, and he's always on the lookout for new ways to improve their performance.