DIY USB Power Bank

Nowadays, the whole market is being inundated with all kinds of power banks. For instance, 1. material inside of portable chargers can be different(now popular ones are Lithium-ion and Li-polymer). 2. The capacities differ(2500mAh, 3000mAh, 10400mAh, and 12000mAh etc.). 3. Various of appearance … Continue reading

What is the best portable charger?

What is the best portable charger? Perhaps lots of consumers believe that the best portable charger must have the best battery cell, in which case larger capacity can be offered and the charger last longer. That's correct. Indeed battery cell plays a very important role. However another factor of … Continue reading