If your power bank loses its charge too quickly when charging your phone or other gadgets, several factors can cause this frustrating issue. Let’s explore the reasons and how to fix them.
1. Power Bank Capacity vs. Actual Output: The advertised mAh (e.g., 10,000mAh) is the internal battery capacity, but due to energy conversion losses (heat, voltage regulation), the actual usable power is often 20-30% less. So, a 10,000mAh power bank might only deliver 7,000mAh to your device.
2. Device Battery Size Matters: If your phone has a 5,000mAh battery, a 10,000mAh power bank won’t fully charge it twice—expect 1.5 charges max after accounting for efficiency losses.
3. Fast Charging Drains Power Banks Faster: Using Quick Charge (QC) or Power Delivery (PD) speeds up charging but also consumes more energy from the power bank. If both devices support fast charging, the power bank depletes quicker.
4. Old or Low-Quality Power Banks Lose Efficiency: Over time, lithium-ion batteries degrade, holding less charge. Cheap power banks may also use poor-quality cells, leading to faster discharge.
5. Background Apps & High Power Consumption: If your phone is running games, GPS, or bright screens while charging, it pulls more power, draining the power bank faster.
How to Improve Battery Efficiency?
✔ Use a power bank with a higher capacity than needed.
✔ Avoid using your phone heavily while charging.
✔ Buy reputable brands with good efficiency ratings. ( View customer reviews )
