Item | Cost | Specs |
$17 | 12V, 5A, 60W | |
$13 | 5A, 12V, 60W panel max | |
$38 | 20W, 20.5”x14.4” | |
$45 | Datasheet, Sales page, 5.5W max power, Up to 24V DC input |
Total Cost including tax and shipping
(17+13+38+45)*(1.1)+10 = $135
Power Audit
The wifi repeater claims a “max power of 5.5W” I’m hoping that average power requirements are less than this?
Assumptions (24hr period):
3W continuous average power usage
20 hour up time
4 hours of direct sunlight (source)
85% charge efficiency (source)
Power generation:
4hr * 20W * 0.85 = 68 Wh
Power consumption ?:
3W * 20hr = 60Wh