Common Issues
Why did I receive only one package even though I ordered multiple products?
Some of our products are large and require special handling, so your order may be shipped in multiple packages instead of one shipment. This helps us avoid slower freight delivery and ensures you receive your products as quickly as possible.
Please allow 2–3 additional days for the remaining packages to arrive. They will be delivered separately but should all arrive at the same address.
If you haven’t received the remaining packages within 7 days after receiving the first package, please contact our customer support team, and we’ll be happy to assist you.
What devices can this solar panel charge?
1. Portable energy storage（Power Stations）
2. Batteries (requires a solar charge controller)
What precautions should be taken when building a photovoltaic system that includes multiple photovoltaic panels?
Series or parallel configuration: Ensure that the voltage and current of the photovoltaic modules match the input range of the controller. For example, if the controller’s maximum input voltage is 100V and the maximum input current is 20A, then the optimal series-parallel configuration for six 20V 10A 200W photovoltaic modules is three in series and two in parallel.
Controller capacity: Ensure that the controller’s rated current and input voltage range can withstand the total output power of the photovoltaic modules. For example, when four 200W photovoltaic modules are connected in parallel, the total current may reach 44A, so a controller with a rated current of 50A or higher needs to be selected.
Cable specifications: Select appropriate cables based on the current to avoid overheating or damage caused by excessively thin cables. Heat dissipation and installation: Ensure sufficient space for heat dissipation of the photovoltaic modules and avoid shading to prevent affecting power generation efficiency.
Battery matching: Ensure that the battery capacity is large enough to store the energy generated by the photovoltaic panel and avoid waste.
If connecting to portable energy storage, no controller is needed, but the voltage and current of the photovoltaic panel need to be matched with the energy storage.
Can it be used with a portable power bank?
Yes, Hishen’s solar panels are compatible with most portable power banks on the market. The solar panels can directly charge portable power banks with a PV input interface, provided the panel’s output voltage and current are within the portable power bank’s acceptable range. Please check that your portable power bank’s maximum input voltage is greater than the panel’s open-circuit voltage. For specific model inquiries, please contact us.
If I want to build my own solar system, how should I choose the appropriate solar accessories for my solar panels?
Hishen provides professional technical support. You can send your needs, along with specifications or instructions for the accessories you purchase, directly to our email address: info@hishen-solar.com, and we will help you build your ideal DIY solar system.
Should I choose a 12V or 24V solar panel?
If your battery is 12V, you can choose either a 12V or 24V panel; however, if your battery is 24V, you can only choose a 24V panel. Alternatively, you can connect multiple panels in series to increase the voltage to accommodate higher voltage batteries.
Other Issues
Return policy
Our goal is for every customer to be totally satisfied with their purchase. If this isn't the case, let us know and we'll do our best to work with you to make it right.
Manufacturing
Our products are manufactured both locally and globally. We carefully select our manufacturing partners to ensure our products are high quality and a fair value.
Warranty Period?
Generally speaking, all of our products are covered by our warranty policy.
However, our members are eligible for a warranty extension. If you are a Gold Member, you are entitled to a 3-year warranty extension.