Panel Size: 420*280mm /16.9*11.26in, Material: A-level polycrystalline silicon solar panel, Current: 0-1000MA, Maximum power: 20W, Detection Rate: IP65, Rated power: 10W, Maximum voltage: 21V, Working voltage: 18V.
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
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18V 18W Solar Panel+30A Controller+4000W Modified Sine Wave Inverter 12V to 110/220V Solars Panels System Power Generation Kit | $71.71 | – |
Click here to search by yourself. Here are coupons that you can use.
Updated: 07-09-2025
Banggood
Warehouse in Europe 
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Link: Solar Power System Kit 18V 4000W 12V to 220V Inverter 30A [EU]
$67.65 with coupon: BGCarEle4
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Not enough data to show price history chart… $67.65 is the only recorded price. It was not cheaper than that since we have saved it in DB.
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).