There is no doubt that Xiaomi Mi 9 is making talk about himself so much that in Italy has already become the best seller number 1 on the Amazon store and for this Xiang Wang at this time he visited the headquarters of Xiaomi Italy near Milan. To tell the truth, the thing is suspicious since the Italian social manager has first published a story on Instagram, pointing out that for the occasion all the staff had dressed up completely, and then the post was removed. Maybe something big bubbles in the pot?
But this is another story, or rather mystery, which instead is not the 20W wireless charging Xiaomi Mi 9, device top of the range launched on the market with an excellent performance / price ratio to envy even the most noble smartphone . But without dwelling too much on the hardware, we deepen the gem of the 20W wireless fast charge with the Chinese flagship, allowing to reach the 30% of charging in 30 minutes while it requires about 90 for a full total energy.
Specifically, Xiaomi uses a technology called PUMP CHARGE which, as the name suggests, uses a high recharge current channeled on a DC-DC converter, which uses capacitors to store energy and improve energy conversion efficiency.
Xiaomi Mi 20's 9W wireless charging no longer has any secrets
All this translates into the fact that Xiaomi Mi 9 reloads wirelessly to 20W with a voltage of 15 volts and a current of 1,34A, while the intervals of 20mV regulate the stability of power, reaching a 98% of power output efficiency. I know, you are not understanding anything and neither do I, but to put it in a hurry, Xiaomi Mi 9 takes a time of charging lower than what uses a smartphone in wired mode, such as the Mi 8.
But if we want to make more pretentious comparisons, let's look at the iPhone XS Max which has a 3170 mAh battery and 7,5W wireless charging. Xiaomi Mi 9 therefore takes an hour and a half for a full charge while the ugly duckling from Apple needs 4 hours and 15 minutes. Not bad right?
