Portable Power Stations FAQ's

How does ROCKSOLAR products provide power for DC 12V devices (like a headlamp, fan, air compressor) with portable power supply?

The 5.5mm 12V DC output is plug and play. Plug devices into the DC output port to gain power.


 What devices or home appliance can my power station handle?

There is a wattage rating for every of our power station (for example, Nomad 400W). 

And here is a list of average wattage of most home appliance:



Solar Panel Ratings And Efficiency Explained:

Rated Output / Power Output Capacity. This is the amount of power a solar panel can generate. Power is measured in watts (W) or kilowatts (kwh). A 100W solar panel can produce 100W per hour under ideal weather conditions, a 300W solar can produce 300 watts an hour and so on.

Efficiency. The efficiency rating measures the amount of energy the panel is converting into energy. Most solar panels have an efficiency rating between 17%-23%. A solar panel with a 21% efficiency rating means it converts 21% of the sun’s energy striking it into electricity.

Do not confuse the efficiency rating with the rated output. A 23% efficiency rating does not mean the panel will only produce 23% of its rated output in watts.


How do ROCKSOLAR products provide power for AC appliances with portable power supply?

Connect the power cable plug of the electrical device to the AC outlet of the product, switch on the power button and the unit will start providing power to your devices.

WARNING! The AC outlets, AC voltage, and frequency are different according to different countries; please carefully check whether the product specifications are consistent with the device specifications before use, otherwise, this could be dangerous.


How do ROCKSOLAR products charge from your car with a 12V car port (cigarette lighter port)?

Using the included car charger (all units excluding the Weekender RS81), plug the unit into a 12V car port (cigarette lighter port ) of your car.

You will know the unit is charging when the blue LED Battery Indicator lights up and blinks. The unit is fully charged when all battery indicators stop blinking and remain solid.


I may have accidentally left my ROCKSOLAR portable power station on when I stored it away and now it's completely dead and not working. What do I do?

This happens, don't worry. The battery has completely drained and will take a very long time to replenish its charge. Plug your charger in using the AC wall adapter and leave it charging for 24+ hours. The power station has over-charge protection, so this will not damage your battery. After charging for a day or two, check the battery, it should be working again. If not, please contact services@rocksolars.com for additional troubleshooting support.


What should you pay attention to when using a portable power supply?

  1. Do not short-circuit the unit. To avoid short-circuiting, keep the unit away from all metal objects (e.g. coins, hair-pins, keys, etc.).
  2. Do not heat the unit, or dispose of it in the fire, water, or other liquids. Keep away from high temperatures. Do not expose the unit to direct sunlight. Avoid using the power station in freezing temperature as the capacity of the battery would decrease. 
  3. Keep away from high humidity, dusty places.
  4. Do not disassemble or reassemble this unit.
  5. Do not drop, place heavy objects on, or allow a strong impact on this unit.
  6. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
  7. Children should be supervised to ensure that they do not play with the appliance.
  8. Do not cover the device with towels, clothing, and other items.
  9. The unit may become hot when charging. This is normal. Use caution when handling.
  10. Do not charge the unit over the required time.
  11. Disconnect the unit when fully charged.
  12. Use the unit properly to avoid electronic shock.
  13. Please deal with scrap products in accordance with the regulations, do not treat the built-in battery as household garbage, so as not to cause explosion and pollution.
  14. The product is only used for emergency situations, it cannot replace the standard DC or AC power of household appliances or digital products.


What is the difference between Modified Sine Wave and Pure Sine Wave output?

The primary job of an inverter is to convert the DC (Direct Current) power from the battery bank or solar panels to AC (Alternating Current) power needed for most appliances. To do that, it must take the constant DC voltage and change it to a sine wave curve that goes above and below 0 volts. When inverters first came out, the most common way to do this was to make the voltage go straight up and down, creating a blocky signal. This is called modified sine wave, seen in orange in the image below. More advanced modified sine waves make multiple steps, trying to come close to a pure sine wave.



Will Modified Sine Wave affect my device’s performance or damage my device?

If the device that you want to power uses a rectifier to change the AC into DC (A power brick), it’s extremely unlikely that you’ll have any issues. That means your laptop is going to be fine.

The full list of electronics that work just fine with a modified sine wave is far too long to get into here. Suffice it to say that if it doesn’t use an AC motor and isn’t a delicate piece of medical equipment, you’re going to be in the clear.


When I use my multimeter to test the AC output, the reading is not 110V and is jumping around. Why does this happen?

If you are trying to measure Modified Sine Wave output with multimeter that is not rated “True RMS multimeter”, this would happen. It does not mean that AC output is malfunctional. For more details, please refer to the following YouTube video.