Anker Direct fulfilled by Amazon has Anker Premium Aluminum Powercore+ series on sale $50% Off. Condition is new.
Model A1311 claims "Qualcomm 3.0 with PowerIQ" charging technology
Input: Use your original cable or similar to charge Galaxy 10 Plus and below at its fastest possible speed. Use a converter tip or common A to micro fast cable to refill the bank from the original wall charger.
QC Output: 5-6V ⎓ 3A / 6-9V ⎓ 2A / 9-12V ⎓ 1.5A 18W max
Input: Quick Charge 3.0: 5-7V 2.1A,7-9V 1.6A,9-12V 1.25A 15 watts max
claimed recharge time: "a full recharge is completed in only a couple of hours"
Size: 3.7 x 2.4 x 0.9 inches Weight: 236g 8.32oz
Cells: 3 x LG 18650
My take: Never tried it. Price is excellent for premium Powercore+ series but still higher than some QC chargers with comparable or better specs. Aluminum case offers high degree of safety but can scratch and dent. 18 watt QC output charges Samsung at fastest possible speed using original cable without the need for power delivery. Best for 10 Plus and older. Defaults to PowerIQ for non QC phones. Max Input re-fill charge rate of 15 watts is a bit slower than models offering 18 watt refill. 450 five star reviews. 45 critical suggest that a small number of units may require exchange for failing to perform as expected. Good time to buy a bank with many hitting all time lows. Alternatives available with similar or better specs but not with the claimed build quality of PoweCore+ note: supports fast charging on dual charging mode phones like Samsung but has no power delivery for PD only phones.