wattaire
Amazon Basics
100W
CCAA
100W Four-Port GaN Wall Charger (2x USB-C + 2x USB-A)
Amazon Basics · B087MDYP24
vs
Apple
140W
C
140W USB-C Power Adapter
Apple · A2452
The short version
Apple does not publish how it divides power between ports, so a like-for-like comparison stops there.
Size, true to scale
front and side, one scale
20
40
60
80
size not published
not published
— · weight not published
75×96×28 mm
202 cm³ · 277 g

Solid block is the face you see in the socket; the outline next to it is depth.

Power by situation
bars share one scale · 140 W
One device, best port
100 W
140 W
What a laptop gets when nothing else is plugged in.
Two devices at once
65 + 18 W
not published
The best published pair, which is rarely an even split.
Three devices at once
not published
not enough ports
Everything plugged in together.

Port layouts differ, so we compare what you would do with the charger, not port pairs. Each row takes the best published combination for that situation.

Field by field
Amazon Basics
Apple
Total output
100 W
140 W
Ports
2×C + 2×A
1×C
Volume
smaller is better
not published
202 cm³
Weight
smaller is better
not published
277 g
Power density
—
0.69 W/cm³
PPS
No
No
EPR
over 100 W
No
Yes
Folding plug
Yes
No
Price per watt
net of VAT
no price
0.31 €/W
Documentation
8.1/10
8.5/10

marks the better value in that row. Ties, missing data and class differences get no mark.

Offers
EUR · incl. 19% VAT
No DE offer
€50.98
Geizhals
See at retailer