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20700 vs 18650 – Difference Between 20700 Battery and 18650 Battery

20700 vs 18650

You might be wondering, “What’s the difference between a 20700 battery and an 18650?” The 20700 battery offers a whopping 30% life span increase over the 18650, but it comes at an increased cost.

It is important to note that there are certain terms to understand as well as some important factors to look out for when selecting a battery in order to avoid complications. Some of the major factors to look out for include durability or average battery life span of the battery, your physical environment and the device the battery would be used for. A 20700 rechargeable battery, as well as a 18650 Li-ion rechargeable battery, may appear to be similar, however, it should be noted that the differences between these two batteries lies in their physical properties and sometimes, in their area of application.

20700 vs 18650 Battery

20700 battery 18650 battery
It is specifically designed to power high drain devices It is mostly used for flashlight
It has a nominal voltage of 3.7 volts and a maximum voltage of 4.2 volts It has a nominal voltage of 3.6/3.7 volts
It has a capacity of between 3000mAh and 5000mAh   It has a capacity of between 1200mAh and 3600mAh
Charge time takes an average of 4 to 6 hours  Charge time takes an average of 4 hours

Definitions for 20700 battery and 18650 battery

20700 battery

20700 battery

20700 rechargeable batteries are high lithium ion cell batteries that are usually defined or grouped by size. They are highly rated rechargeable batteries that are constructed with a hi-drain capability as well as a 3000mAh to 5000mAh capacity. It is also designed to be used for devices such as electric vehicles, scooters or skateboards, cordless power tools, custom projects and battery packs. A 20700 rechargeable battery has a nominal voltage of 3.7 volts and a maximum voltage of 4.2 volts.

18650 rechargeable batteries are lithium-ion rechargeable batteries that come in a standardized industry size of 3.6 and 3.7 volts and have their capacity between 1200mAh and 3600mAh. There are two types; Protected and Unprotected. It is an extremely popular battery source for flashlights. The charge time for a 18650 battery varies depending on the charger and battery type. The average charge time for a 18650 battery is usually four hours.

Differences Between 20700 and 18650 Batteries

18650 battery

18650 battery

There are various differences between a 20700 rechargeable battery a 18650 Li-ion rechargeable battery. However, some of these differences will be discussed below.

A 20700 battery has larger cells and as such, it has a higher capacity as well as a higher discharge rate than a 18650 battery. The 20700 battery is 21mm in diameter and 70mm in length while the 18650 battery is 18mm in diameter and 65mm in length. Also, a 20700 battery has a capacity of between 3000mAh and 4000mAh for power tool batteries while a 18650 battery has a capacity of between 1200mAh and 3600mAh. As a result of these battery capacities, the 20700 battery has more run time than a 18650 battery.

In conclusion, although batteries can be used interchangeably, it is important to ensure battery safety by carefully going through the guidelines and instructions attached to each as well as carefully study the device in order to avoid complications that can further lead to harm.