Input voltage: DC12V, fast charging): 1.33mA, Input current: max 1.35A, fast charge): max 1.35A, Output current: 800mA, fast charging): 15V, Output voltage (max, Material: PC, Output voltage: 12V, fast charge): 20V, Compatibility: mobile devices that meet the Qi wireless charging standard, Output current (max, Input current (max, 20W wireless charger, Input voltage (max.
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Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. Only one coupon available!
Link: Banggood product page
1. ($30.99): 13f142
coupon code has to be applied in shop’s cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): 502C6B, wirmik, esbgqi20w, TTxBG10, w20qiwi, aff7off, BGmipqi, BGqiwd, BGwirqi, BG2QIBP, BGPL20W, 2019SPEDM, BGXM20W, BG2qibp, BG3CSUM, BGmiqihc, bgssaff9, BGgrf1499, AFfbG10, Bgmiqi82, BGwirqi9, BG13thpl20w, BGqiw92, BGmiqic9, BG20qiwls, BGqi20mi, BGmiqi11, BG20WMI1, BGBFAFF2019, BGCITYADS2019, BGmi20wq, BGmi20w29, BG20wmiqi17, BG20wqihc, BGmi20wq1, 0e7f33, BGFCHRA, BGMWC30W, FBCOUPON1, bGhOnEy10, BGXM2W, BGXMI15, BGdragonBoat, BGSS10%SW, BGXiaomi20W, BGAFF10OFF, bgshOOp10, BGXiaomi20WAU, BgoFErTaSchInA10, BGHU0036, BgcLuBofErtA10, BGXiaomi10BRCN, BGXiaomi20WPadCZ, BGXiaomi20WPadCN, BG20CHARGER, BGMBCBLE, BG670eb1, BGHONEY2110, BG4b0090, BGf3ffc5, BG707d3a, BG8ee860
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Xiaomi 20W Wireless Charger [EU] ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi 20W Wireless Charger. The lowest price was: $14.99.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).