Solar Power Bank

A: The lifespan is typically measured in charge cycles. A good quality power bank can endure 300 to 500 full charge cycles (where one cycle is using 100% of its capacity), after which its capacity will reduce to about 80% of its original. With normal use, this translates to a lifespan of 2 to 3 years.

A: Using a high-quality, certified power bank will generally not cause significant damage to your phone's battery. The main factors that degrade batteries are overcharging, deep discharging, and excessive heat. Quality power banks have built-in chips to prevent overcharging. A more important practice is to avoid heavy usage (like gaming) while charging, which causes heat buildup.

A: The charging time depends on the power bank's capacity and input power. A rough estimate is: Capacity (mAh) ÷ Input Current (A) ≈ Hours. For example, a 10,000mAh power bank with a 5V/2A (10W) charger will take about 5 hours to charge fully.

A：mAh is a unit that measures the battery's capacity, representing the total amount of charge a power bank can store. A higher mAh generally means more total power. However, it's not always "the higher, the better." You should also consider output power, portability, and price. For example, 10,000mAh is usually sufficient for smartphones, while charging a laptop or for multiple charges may require 20,000mAh or more.

A: Several factors can cause slow charging:

Lack of Fast Charging: Your power bank, cable, or device may not support the same fast-charging technology (e.g., Power Delivery (PD) or Quick Charge (QC)).

Charging High-Power Devices: Using the power bank for a laptop or other high-drain device will consume power quickly and may not charge it rapidly.

Wrong or Poor Cable: Using a low-quality or charge-only cable that doesn't support data transfer and higher currents.

Charging Multiple Devices Simultaneously: The total output power is split, reducing the speed for each device.