• Built-in Ammeter - The power from sun rays is displayed. See the value in Amps of your 28W solar charger for optimal charging for your devices, based on sunlight intensity, angle, and cables used

  • Exclusive SmartIC Technology - With the built-in intelligence chip, our solar phone charger can detects your device then deliver its fastest possible charging speed

  • High Efficiency -  SunPower Solar Panels with high solar conversion efficiency by up to 21.5% - 23.5%

  • Special PET Polymer Surface -  IPX4 waterproof PET polymer fabric protects your solar panel and your devices from occasional rain or wet fog

  • Easy to Carry - Compact size (11.1 × 6.3× 1.3in folded) and lightweight (21.0 oz) design, includes 4 clip hooks

Limited time deal

  • Best Value

    X2 SET

$63.99 per set
Save $31.99

  • Best Value

    X3 SET

$63.99 per set
Save $47.99





Smart Charging Technology

With the built-in intelligence chip, our solar phone charger can detects your device then deliver its fastest possible charging speed(single usb port up to 5V/2.4A Max, dual USB ports up to 4A Max overall). Dual-port applys to all the 5V Android and Apple devices

Built-in Ammeter

The power received from sun rays is displayed on the little screen. Stronger and more rugged than any other on the market

Water&Dust Resistant

This special PET polymer surface protects it from occasional rain or wet Fog and all the ports are covered by a cloth flap and rubber cover to protect them from dust or water damage

High Efficiency

Elevated solar power conversion rate of 21.5%-23.5%. No grid lines on front of cell, solid copper at back and with integrated circuit

Clean and Safe

The built-in smartIC chip maximizes its charging speed and protects your devices from over charging and overloading

Easy to Carry

BigBlue foldable solar charger panel bag is small and light enough to fit into any camping backpack, hiking daypack, or emergency kit

Quality & Trust

We have done many quality and safety tests such as temperature and humidity tests to ensure product quality is safe and reliability. Passes and exceeds all CE, FCC, PSE & RoHs certifications. 

Outdoor Mobile Charger

Reliable and durable material enables it to adapt to large temperature difference and humid outdoor environment, 4 carabiner makes it easy to carry for any outdoor activities such as camping, climbing, fishing etc

The Perfect Companion for Adventures

Taking BigBlue solar charger on the go with you! Follow the sun, power your life


The New Arrival-Cellpowa2500 is coming, welcome to join the Cellpowa2500 Facebook group to get more informations!

  • Product faq
  • Specifications
  • Packing Details
  • Shipping&return
  • Certificate
  • USER manual

Is it waterproof?

The SunPower panel part is IPX4 waterproof and other parts are not waterproof,  please do not immerse it in water

Are the solar panels themselves flexible, or are they hard glass or plexiglass?

The solar panels are four, the entire item can be folded (would get the same shape of a magazine when folded) but the SunPower solar panels themselves can't be bended

Can I connect multiple panel packs to generate more solar power?

This solar charger can't be connected for several pieces.

Does below freezing temperature affect the charger and the device?

Of course, after our actual test this 28W solar charger can be used at -10℃~72℃

Can this be used to charge a power bank? What portable devices can I charge?

You can use it to charge the 5V power bank in the direct sunlight when there are a power cut or charge your cellphone, ipad directly, but this solar charger can't charge the iPad Pro and laptops

Can this charge a power station?

This charger can't charge power station


  Product Dimensions 

  Item Weight 


  Conversion Efficiency

  Output Ports

  Usage Notice


 11.23 x 6.3 x 0.71 inches

 1.31 pounds

 SunPower panel and Special PET Polymer Surface


 2 USB charging ports( 5V/4A Max Overall)

 1.Our solar charger can't store the electricity, pls unfold four solar panels in the direct sunlight and then connect 

 2.Please remember that Apple's devices has an inner chip that will stop the charge whenever its inner temperature gets too hot

 3.To prevent charging the phone under the sun, we suggest to use a longer cable and keep the phone in a shadow area

 4.Our solar panel isn't suitable for small current charging products (standard charging current is below 200mA), which will be continuous shutdown and restart

 5.Our solar charger isn't compatible with the iPad Pro

 6.If the sunlight is not enough, there will be show message "accessory is not supported"

28w Solar Panel Charger*1

Carabiner* 4

USB A-to- Type-C Cable*1

User Manual*1

Warranty Card*1


We have Japan, The United States, China and EU warehouses that can ship to all over the world, we will choose a suitable warehouse according to the customer's country.

Generally we will ship your package within 24 hours after receive your order on business days. In special situation such as product pre-sales or out of stock, we will explain the shipping time on the product page.

After shipping, we will notify the customer tracking number and logistics URL by email, customer can also find shipping details user center after login in our website.

The delivery time is based on the customer's country. Generally, customers can receive the package within one week after it shipped. Of course, due to other factors such as COVID-19, the national import policy changes, there is a certain delay in the logistics timeliness.

If there is a package loss or damage during transportation, we support refund and resend. We will contact with the customer as soon as possible.

We accept order cancellation before the product is shipped or produced. If the order is cancelled you will get full refund. We cannot cancel the order if the product is already shipped out.

Returns (if applicable)
We accept return of products. Customers have the right to apply for a return within 30 days after delivery the product.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. To complete your return, we require a receipt or proof of purchase. Please ask our customer service to make sure you send the package to the right address.

Fee Statement
1. Custom-order or personal items do not have a right to 30 days refund.
2. If the return is caused by the consumer, consumer should be responsible for the shipping fee. The specific fee should be based on the express company you choose.
3.  If due to our reasons, the goods received are damaged or not correct, the consumer is not required to bear the shipping fee for this reason.
4. No restocking fee to be charged to the consumers for the return of a product.

Refunds (if applicable)
Once your return is received and inspected, we will email you a notification of receipt. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late or missing refunds (if applicable)
If you have not received your refund, please check your bank account again first. Then contact your credit card company. Refunds usually take some processing time to clear the account. If you have completed all of these actions and still have not received your refund, please contact us at support@ibigblue.com

FCC Certificate

CE Certificate

RoHs Certificate

PSE Certificate

Customer Review

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