Has anyone used it to charge a laptop?

I have. I got a pretty decent charge from it

Can I use it in any part of the world?

Yes. I’ve taken it everywhere with me. Just make sure you have your adapter

How do you activate "always on" mode?

I own a previous Xiaomi 20,000mah power bank that had that mode to charge/ power devices that draw too little current to keep ordinary power banks on. I do not know if this power bank has that feature. On the older power bank I own always on mode is engaged by pressing the power button twice. All the charge indicator lights will blink. I think it stays on for two hours at a time in this mode. I found this mode invaluable for charging my juul vape pen. It would also come in handy for something like string lights. More power banks should really include this feature.

Does this power bank support pass through charging. Meaning I can charge the power bank and draw power from it at the same time?

I believe so. The charge lasts a really long time.

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⚡ Stay charged, stay ahead—never miss a moment!

PORTABLE POWERHOUSE - Compact 520g design fits your lifestyle—office, travel, or remote hustle.
SMART SAFETY SHIELD - Advanced circuit chips protect against overcharge, overheating, and short circuits.
POWER THROUGH YOUR DAY - Massive 20000mAh capacity charges up to 4 phones—stay unstoppable.
LIGHTNING FAST RECHARGE - 18W two-way fast charging means less wait, more go.
UNIVERSAL COMPATIBILITY - Dual USB-A outputs and USB-C/Micro-USB inputs keep all your devices juiced.

The XIAOMI 20000mAh Redmi Power Bank delivers a robust 74Wh capacity with dual 18W fast charging ports and versatile dual inputs (USB-C and Micro-USB). Engineered with advanced safety chips, it ensures reliable, high-speed charging for iPhone, Samsung, and Android devices, making it the ultimate power companion for professionals on the move.

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