As a starting point let us contemplate the Astrolux E2145 4500mAh 28A 3.7V 21700 Li-ion Battery, a rechargeable lithium power cell that boasts high performance and versatility.
This battery is widely used in portable flashlights, home tools, toys cameras, and even e-bikes. With its impressive 28A high discharge power and 4500mAh high capacity, this battery promises to deliver reliable and long-lasting power in various applications.

When put to the test the Astrolux E2145 21700 Battery lives up to its promises. Its unprotected high-performance feature ensures that it can handle high drain applications, making it an excellent choice for powerful flashlights like the Astrolux DL01. Additionally, the battery can be recharged up to 500 times, which is great for those who use their devices frequently. With a minimum capacity of 4000-4500mAh and a nominal voltage of 3.7V this battery can deliver consistent and reliable power.

The pros outweigh the cons with the Astrolux E2145 21700 Battery. Its high discharge power and capacity make it a reliable choice for various applications and its rechargeable feature is eco-friendly and cost-effective. However, some users have reported that the battery's actual capacity is lower than the advertised 4500mAh, which can be disappointing for those who expect maximum performance.

Without a doubt the Astrolux E2145 21700 Battery is worth checking out for those who need a reliable and high-performance power source for their devices. Its versatility and rechargeable feature make it an excellent choice for portable flashlights, home tools, toys, cameras and e-bikes. While some users have reported lower than advertised capacity, the battery's high discharge power and capacity still make it a valuable investment. Overall, the Astrolux E2145 21700 Battery is a great addition to any power tool kit.