This post tells you everything you need to know about 18650 batteries. We'll talk about different types, features, charging, lifespans, and our recommendations for batteries and chargers.

An 18650 is a lithium ion rechargeable battery. Their proper name is “18650 cell”. The 18650 cell has voltage of 3.7v and has between 1800mAh and 3500mAh (mili-amp-hours).

18650s may have a voltage range between 2.5 volts and 4.2 volts, or a charging voltage of 4.2 volts, but the nominal voltage of a standard 18650 is 3.7 volts.

Is the internal resistance of 18650 lithium battery pack large or small?

   Resistance indicates the degree of resistance of a circuit element to current transmission. The unit is Ohm. The internal resistance of 18650 lithium battery pack is related to the capacity and type of battery.

Intro to Electric Bike Maintenance

Whether you’re thinking about buying your first electric bike (e-bike) or are the proud new owner of one, you’ll need to know a few things about how to care for it. It’s a sophisticated piece of technology, and some regular maintenance can help you keep it pedaling smoothly for years to come.

The first thing to realize about an e-bike is that it is first and foremost a bicycle, so it requires the same basic maintenance as a standard bike.

How to Choose an Electric Bike?

Riding an electric bike or e-bike for the first time can feel like discovering a superpower. That’s because pedal-assist e-bikes extend your two-wheel possibilities: You can keep up in stop-and-start traffic, more easily haul kids or cargo, arrive less sweaty at your destination, or simply enjoy a little extra oomph on rides that otherwise might have seemed too far or too hilly.

E-bikes initially break down into the same categories as conventional bikes: mountain and road, plus niches like urban, hybrid, cruiser, cargo and folding bikes. For an overview of basic bike categories, read How to Choose a Bike.

How to Store Batteries Safely + Battery Care Tips?

Have you ever opened up a device and found old, corroded, leaky batteries inside? Prevent mishaps like these by learning how to store batteries correctly.

Batteries can be hazardous to our health when they are not stored and cared for correctly. Long term battery storage requires specific considerations to ensure that the battery won’t leak, explode, or ruin other batteries. There are also things you can do to prolong the life of commonly used batteries.

We’ve put together a straightforward guide that discusses how to store batteries as well as how to care for batteries while in use. We’ll explain how to dispose of batteries safely, the best place to put them, and some other factors that might be unfamiliar to you.

If you’re looking for specific battery care information, feel free to skip ahead using the links below. Although, you might benefit from reading the entire guide. Let’s get started!

1 Plug your battery charger into a wall outlet. 

To determine whether or not your battery charger is putting out as much voltage as it’s supposed to, you’ll first need to make sure that there’s electricity running to it. Hook the power cord up to a nearby AC outlet. This will cause the charger to begin channeling electricity, which you’ll measure using a multimeter tool.

More things you don't know about the 18650 batteries

18650 batteries are widely used in notebook computers, walkie talkies, portable DVDs, instruments and meters, audio equipment, aircraft models, toys, video cameras, digital cameras and other electronic equipment.