Nitecore UM4 Battery Charger (Banggood, Aliexpress: 1000mAx 2 (max), Input Voltage: DC 5V, Output Current: QC mode: 1, 750mAx 4 (max), 1500mAx 2 (max), Output Voltage: 4.35V+ / – 1 percent / 4.2V+ / – 1percent / 3.7V + / – 1 percent / 1.48V+ / – 1 percent, 500mAx 4 (max), standard mode: 1500mAx 1 (max), Charging Cell Type: LiFePO4, Compatible: 10440, Input Current: 2A, 500mAx 1 (max) (the best price with coupon)).
Basically copy coupon, view price history or create e-mail price alert. Do you want to know what the best price is?
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG2434P, BGUM2, BGTBFL, BG13TH, BGF1111, fInbG2020, BGff2020, BGUM213, BGAFF10OFF, BGTT10, BGSM30%, bGhOnEy10, bgshOOp10, BGUM24, BG14TH26, BGTBD, BgcLuBofErtA10, BGCZ1111, BG1128, BGBFC06, BGCuponation10, BGNTUM42, BGNTUM, BG10OFFAFF1, BGUM4, BRANDNC, 502C6B, e2bcea, linepayflt, BGUM4A, BGNTUM4, BG1106YR, BGCZ1107, BG1106YB, BGBFC04, BGYW13, 13f142, BG10OFFAFF, BGwhielabel, BG330e37, 4BLF, BGJH37, BANGGOODSD, 6GSGIT, BGTorch4, BGYW82, BGdeals307, BGZUZU088, 00c906, BGYW91, BGJH56, BGtorch2, BGsmart088, BGtorch3, BGALIBUY085, BG6ff6f4, BGAlerabat15, BGtorch7, BGJH64, BG675bad, BGALIBUY088, BGAlerabatI, BG87aea2, BGf2dac0, BG6091bb, BGtorch9, BG074cfb, BG8Alerabat, BGALIBUY22, BGLED07, BGOutlight10, BG4706c3, BG54960e, BGa9414f, BG589b2e, BGd57765
(I don’t think these’re gonna work, but you can try ’em out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Nitecore UM4 Battery Charger [EU] ($-3)
Price history and price alert
Price history (for all/most countries) for Nitecore UM4 Battery Charger is here. The lowest price was: $20.62.
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)).