Choosing the suitable external laptop battery pack depends on several factors. Here are three factors you should consider when shopping for a power bank:
Power capacity measured in 50 000 mAh (milliamp Hours battery life). Generally, the higher the mAh rating, the more charge your best portable battery will hold;
Output power measured in 100 Watts (W), will determine the charging speed charging (Power Delivery);
Other features such as the number of USB ports, charging multiple devices, and supports wireless charging.