As we continue to rely more and more on our electronic devices, it’s important to understand how they’re powered. The milliampere-hour (mAh) rating is a crucial metric to consider when choosing the right rechargeable battery. In this blog post, we’ll dive into what mAh is and provide a breakdown of the common mAh ratings for each type of rechargeable battery.What Is mAh (Milliamp Hour)?MAh is a unit that measures (electric) power over time. It is commonly used to specify the capacity of a battery, which is the amount of energy that the battery can store and supply to a device over time. One milliampere-hour (mAh) is equivalent to a current of 1 milliampere (mA) flowing for one hour. For example, a battery with a capacity of 2000 mAh can supply a current of 1 milliampere for 2000 hours, or a current of 2 milliamperes for 1000 hours, or a current of 100 milliamperes for 20 hours, and so on.The higher the mAh rating of a battery, the more energy it can store and supply. This is why devices that require more power, such as smartphones and tablets, often have batteries with higher mAh ratings than devices that require less power, such as remote controls and wall clocks.What are the common mAh and uses of the 3 main rechargeable battery?1.NiMH rechargeable batteries (nickel-metal hydride)The most common type of rechargeable battery is the nickel-metal hydride (NiMH) battery. AA NiMH batteries have a capacity of 2000-3000 mAh, while AAA NiMH batteries have a capacity of 600-1000 mAh. These batteries are widely used in high-drain devices such as remote controls, flashlights, and digital cameras due to their reliability and affordability.2.NiCd (Nickel-Cadmium) Nickel-cadmium (NiCd) is a type of rechargeable battery that uses nickel oxide hydroxide and metallic cadmium as electrodes. AA NiCd batteries have a capacity of 600-1000 mAh, while AAA NiCd batteries have a capacity of 200-500 mAh. It has been used in a variety of applications, such as portable electronic devices, power tools, emergency lighting, and even aircraft due to their high discharge rate and ability to handle high loads.3.Li-ion (Lithium Ion) Lithium-ion (Li-ion) batteries is a type of rechargeable battery that uses lithium ions as its primary component. AA Li-ion batteries have a capacity of 2000-3000 mAh, while AAA Li-ion batteries have a capacity of 500-1000 mAh. It is commonly used in a wide range of electronic devices, including laptops, smartphones, tablets, and digital cameras.In conclusion, understanding the mAh rating of a rechargeable battery is essential to ensure your devices stay powered for longer. The NiMH, NiCd and Li-ion batteries are all popular choices for various devices, each with its own advantages and disadvantages. Choose the best rechargeable batteries based on your specific requirements and the intended usage of your device, and remember to dispose of them properly to reduce environmental impact. Make sure to follow us to discover more about battery's hacks!