1. Different sizes. Although 18650 and AA batteries look similar, the sizes of the two are actually different. The 18650 is much larger than AA batteries in terms of length and diameter.
2. The tension is different. The voltage of lithium batteries is usually around 3.5 to 4.0 V, the most common being 3.7 V, while the voltage of AA batteries is 1.5 V (non-rechargeable) or 1 .2 V (rechargeable).
3. Its working principle (internal chemical reaction process) is different.
4.18650 is a rechargeable battery. Most regular AA batteries are disposable batteries and very few are rechargeable.
1. The tensions are different and the capacities are different. The former can be loaded, but the latter cannot.
2. Analysis from appearance: These two batteries are cylindrical batteries, but the appearance specifications are different. Specificationss of 18650 lithium battery are 18mm in diameter and 65mm in length; while the specifications of AA battery (actually, the scientific name of AA battery is 14500) are 14mm in diameter and 50mm in length.
3. Analysis by type: 18650 lithium batteries can be divided into 18650 lithium ion batteries, 18650 lithium iron phosphate batteries and 18650 nickel metal hydride batteries; while AA batteries include rechargeable nickel metal hydride batteries, nickel cadmium. rechargeable batteries, zinc-manganese alkaline batteries (referred to as "alkaline batteries"), ordinary zinc-manganese acid batteries (referred to as "ordinary batteries"), etc.
10440 Battery The 10440 battery is a lithium battery with a diameter of 10 mm and a height of 44 mm. It is the same size as what is often called an “AA battery”. usually very small, only a few hundred mAh, mainly used in mini electronic products. Such asflashlights, mini speakers, amplifiers, etc.
2.
14500 Battery The 14500 battery is a lithium battery with a diameter of 14 mm and a height of 50 mm. It's also the size of what we've always called an "AA battery." ". This type of battery is generally 3.7V or 3.2V, with a smaller rated capacity, a little larger than the 10440 battery, generally 1600mAh, and excellent discharge performance. The main areas Application are consumer electronics, such as wireless speakers, electricity toys, digital cameras, etc.
3.
16340 Battery The battery 16340 is a lithium battery with a diameter of 16mm and a height of 34mm. This type of battery is shorter in height and its capacity is not very small. Therefore, they often appear in lamps. flashlights, LED flashlights, headlights, laser lights, lighting fixtures, etc.