Which Power Bank Brand Wins?

(heaviest of the brands tested up to that point)

(lightest of all 18)

(by far the heaviest of all 18)

(heaviest of all 18)

(port 1), 11.25 W (port 2); 11 W total across both ports simultaneously (6.11 W + 4.91 W)

(left port, best yet at the time), 13.43 W total across both ports simultaneously

+ 8.49 W = just over 15 W total (best yet at the time)

+ 9.93 W = just over 20 W total (best yet at the time); separately, single-port max cited later as 'just over 18 W', the highest single-port figure in the closing recap

(the transcript also attaches a second, unclear '18 watts' figure in the same sentence; recorded both since it is unclear which is the precise reading)

(did not perform quite as well as iWalk)

(transcript reads '177.23 watts', almost certainly a garbled/duplicated digit; recorded as the corrected value with the discrepancy flagged)

before a voltage drop and power-down (only its USB-A port charges devices; the other two ports are for charging the bank itself)

+ 6.05 W = just over 13 W total (quite a bit less than many other brands)

+ 5.14 W = just over 11 W total

single-port; 7.02 W + 7.16 W = about 14.18 W total (described as quite a bit less than some other brands despite its large claimed capacity)

+ 6 W = about 12 W total across 2 of its 4 ports

single-port (transcript reads '1783 watts', almost certainly a dropped decimal point, corrected here); 6.67 W + 10.73 W = almost 18 W total across two ports

rated 18.5 Wh, delivered 14.31 Wh (about 77%, derived from the two stated figures)

rated 18.5 Wh, delivered 14.29 Wh (about 77%, derived)

rated 55.5 Wh, delivered 22.5 Wh (41%, explicitly stated)

rated 99.2 Wh, delivered 54.8 Wh (55%, explicitly stated)

rated 95.5 Wh (derived from the stated 26.5 Wh / 28% pairing), delivered 26.5 Wh (28% of rating, explicitly stated, called out as a struggle)

rated 37 Wh, delivered 32.7 Wh (89% of rating, explicitly stated as the best capacity-utilization result of all 18 brands)

rated 37 Wh, delivered 29.92 Wh (81% of rating, in an explicit pairing against Anker Slim)

rated 55.5 Wh, delivered 27.75 Wh (50%, explicitly stated)

delivered 22.9 Wh (69% of rating, rating not separately stated but consistent with its 9,000 mAh spec)

rated 18.5 Wh, delivered 10.96 Wh (about 59%, derived; described as 'missing its rating by quite a bit')

rated 37 Wh, delivered approximately 30.46 Wh (transcript reads '3.46 hours', almost certainly a dropped leading digit on a Wh figure; 30.46/37 = 82%, matching the explicitly stated '82% of its rating, finished in second place')

rated 37 Wh, delivered 26.05 Wh (70%, explicitly stated)

rated 74 Wh (derived), delivered 21.33 Wh (about 29%, derived)

rated 95.5 Wh, delivered 50.76 Wh (53%, explicitly stated)

rated 158.4 Wh; delivered figure is internally inconsistent in the transcript, stated once as 52.11 and once as 50.5, against a stated 38% of rating (neither raw figure divided by 158.4 cleanly produces 38%); recorded as a flagged discrepancy rather than resolved to one number

rated 143.6 Wh (stated as the highest nominal rating of all 18 brands), delivered 65.4 Wh (2nd highest raw Wh delivered of all 18 per the closing capacity recap; about 46% of its rating, derived)

delivered 68.7 Wh, the highest raw Wh delivered of all 18 brands per the closing capacity recap

(described as slow, no full recharge time given)

(slowest of the first-tested trio, no full recharge time given)

full recharge in 6 hours 23 minutes

full recharge in just over 8 hours

full recharge in 3 hours 49 minutes (about an hour longer than the INIU B61)

full recharge in 2 hours 54 minutes (fastest of the first-tested charging round); also the 2nd-fastest of all 18 brands measured by minutes-per-watt-hour banked, at 5.3 minutes per Wh

full recharge in about 4 hours 12 minutes, about the same as CFIAI

full recharge in 4 hours 7 minutes

full recharge in 6 hours 25 minutes (slowest of the final-tested pair)

full recharge in 2 hours 33 minutes (fastest of the final-tested pair)

full recharge in 3 hours 54 minutes

described as very slow, full recharge in almost 5.5 hours

full recharge in 5 hours 6 minutes

full recharge in just under 8 hours

(the slowest charging rate of all 18), full recharge in almost 13 hours 8 minutes (the slowest full recharge of all 18)

full recharge in almost 10.5 hours (2nd slowest of all 18)

recharged from 115 W up to about 131 W using a 140 W charger, fully charged in only about 48 minutes; described as the fastest of all 18 at less than 1 minute to bank a full Wh of energy

charging a Samsung S20+, 7.3 W charging a Chromebook (both described as very slow)

described as more than twice the S22 Mini's USB-C wattage

by far the best yet at the time; also cited in the closing recap as the highest combined 2-port total of any brand at just over 20 W

about the same as KEOLL

via its built-in USB-C cable; approximately 14+ W via its built-in lightning cable; approximately 15 W via its separate USB-C in/out port

matching its advertised 20 W rating

charging a Chromebook

its built-in charging cords performed almost as well at 17.76 W

with a single USB-C device connected to a computer; 130 W total with two USB-C computers connected; just over 131 W total with two computers and a phone connected (close to its 140 W rating and by far the highest USB-C charging speed of all 18 brands)