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CairoVolt Labs — First-Party Data
Eng. Yahia Radwan · Quality Assurance Engineer
Anker 737 power bank was tested at CairoVolt's warehouse in New Cairo 3 at 37°C and ran a WE VDSL router for 14 hours 22 minutes continuously without restart — a real result from an Egyptian environment unavailable anywhere else.
Frequently Asked Questions
How long does it take to charge a 20000mAh power bank?▼
With 18W charger: ~6 hours. With 25W: ~4.5 hours. With old 5W: 15 hours (not recommended).
Should I charge my new power bank for 24 hours?▼
No! That's a myth from old nickel batteries. Modern lithium batteries just need one full charge to calibrate.
Is using the power bank while charging it harmful?▼
Yes. Pass-through charging causes double heat which reduces battery lifespan. Charge first, then use.