Testing the iMars SP-B150 (similar as Kroak SP-05) - it is dropping power in full sun
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- čas přidán 11. 06. 2022
- Read the video description:
When it gets hot in the sun, the power drops from about 89W when it is cold to about 33W in full sun.
Here is my measurement:
20°C = 89W
24°C = 85W
28°C = 81W
33°C = 78W
37°C = 73W
42°C = 68W
46°C = 64W
49°C = 61W
53°C = 50W
57°C = 37W
63°C = 33W
Danke für den aufschlussreichen Test!
Höchst interessant wie die Panels sich bei Temperaturschwankungen verhalten.
Was going to buy the Kroak SP-05 150W but cancelled after seeing this video. It looks like a pretty sunny day and not even 40w??
Am I right that output power decreases when panel surface temperature increases?
thats right.
Super Test.Es gibt wohl keine günstigen faltbaren Panels die ihre beworbene Leistung bringen,oder hast du inzwischen welche gefunden?
Habe nicht weiter danach gesucht, da ich die Powerstation im Notfall vorwiegend übers Auto laden werde. Step-Up-Wandler von 12 auf 24V, dann zieht die Powerstation 200W Ladeleistung.
@@antigravity8247Aber der Stepup läuft nicht über die Zigarettenanzünderbuchse,oder?Die vertragen ja nur 10A.
@@fagokit Nein, an die Batterie ne 25A Sicherung, 4 bis 6qmm Kupferkabel nach innen verlegen und XT60 Stecker dran. Gehen dann 16A durch bei 200W
@@antigravity8247 Hast du einen einstellbaren Stepup genommen oder einen vergossenen?
80w quite good result for Chinese 150w solar panel.
Maybe it have to do with your power station.if your battery is overheating then its automatically slow your charging current.i have the same panel and I'm pulling 80-90 watts without dropping when the panel is 60 degrees.
No, it was cold in the shadow, there is no slow-down from the power station. Every solar panel has a power loss when it is hot, about 15%. But at this two there is a contact problem in the cells, because they are not soldered.
You must show and input voltage and current. If voltage 18 volts and 10 amps you get 180 w. If voltage 10 volts and 12 amps you get 120 watts from same panel at same sun... But anyway good test. Maybe you set that voltage must not drob lower thant 18 volts...
At least only voltage...
If panel 18 v, then it best efficiency on full sun is at 18 volts. In video we not see that is voltage on output of panel?
No, because the MPPT is tracking the maximal power point. Voltage does not matter.
Celsius or Fahrenheit?
Celsius (in germany)
What's name of power box black?
It's from Ecoflow.
Ecoflow River Pro