Hey everyone! I'm new to the solar panel world and have a question about compatibility. I'm looking to buy a used 300W solar panel with a short circuit current (Isc) of 10.22A (with a +/- 3% tolerance), but the portable power station I have only supports a solar input of 10A. I've seen mixed opinions online: some say a slightly higher Isc is fine, while others warn it could damage the battery. What's the right advice here? Just to clarify, the solar panel's wattage is within the limits of the power station, so I'm mainly concerned about the Isc discrepancy. Thanks for any help!
3 Answers
The key point here is that the Open Circuit Voltage (Voc) of your solar panel needs to be lower than the solar regulator voltage of your power station. As long as you keep that in check, you should be good to go!
It really depends on your solar controller's specs. If it’s a modern unit, you should be fine even if the Isc is higher than 10A. Just make sure the voltage matches up. You could even hook up multiple panels as long as the voltage stays within limits!
Thanks for the insight! I have a used Bluetti AC70 power station. Are you saying the panel can have higher Isc, but the station will only draw what it needs? I'm a bit confused!
Could you share the datasheet for your power station? Based on what you've provided, there's a chance it could fry the unit. There might be a short circuit current limitation or some protection features on board. Also, be wary of cheap products that say they can handle 10A but struggle at lower currents!
Sure! The specs are: AC Input: 950W Max; Solar Input: 500W Max, 12V-58VDC, 10A; Car Input: 12/24V from Cigarette Lighter. The max input is 950W. Charging times are 1.3-1.6 hours for AC and 2.8-3.3 hours for solar. Hope this helps!
So, how many times has this setup caused issues for you? Asking for a friend! ?