Straight answers for everyday decisions
What to buy and what to skip, with prices that make sense locally.
Showing 4 posts with label Products. Show all posts
Short answer: Charging speed depends on the charger, the device and the cable together. For most phones any decent USB-C cable works. For laptops over 60 W you need a cable rated for 5 A (100 W or 240 W).
All USB-C cables look the same, but they carry very different amounts of power and data. What the ratings mean and which cable you actually need.
Short answer: Carry it in hand luggage only. Anything up to 100 Wh (about 27,000 mAh) is allowed without asking, and 10,000 mAh is the right size for most people.
Capacity, charging speed and the watt-hour limits airlines enforce, explained so you buy the right size the first time.
Short answer: An inverter AC or fridge varies its compressor speed instead of switching it fully on and off. It uses less electricity and is quieter when it runs for many hours, but costs more to buy.
An inverter air conditioner has nothing to do with your home power inverter. What it does, when it saves money, and when it doesn't.
Short answer: Add up the watts of everything you want to run, add about 25% headroom, and divide by the power factor (often 0.6 to 0.8) to get the VA rating. Backup time depends on the battery, not the UPS.
What VA and watts mean, how to add up what you want to run, and how to estimate how long a battery will last.