---
product_id: 43549649
title: "Portable Solar Charger 28W with Digital Ammeter,25.4% High-Efficiency, USB-A/USB-C Ports, Folding Waterproof Solar Panels with Carabiners for Camping, Backpacking, Phones, Tablets, Power Bank"
brand: "bigblue"
price: "฿6868"
currency: THB
in_stock: true
reviews_count: 8
category: "Big Blue"
url: https://www.desertcart.co.th/products/43549649-portable-solar-charger-28w-with-digital-ammeter-25-4-high
store_origin: TH
region: Thailand
---

# 1.47 lbs ultra-portable foldable 5V/4A dual fast charging 25.4% solar efficiency Portable Solar Charger 28W with Digital Ammeter,25.4% High-Efficiency, USB-A/USB-C Ports, Folding Waterproof Solar Panels with Carabiners for Camping, Backpacking, Phones, Tablets, Power Bank

**Brand:** bigblue
**Price:** ฿6868
**Availability:** ✅ In Stock

## Summary

> ☀️ Power your adventures with the sun — never run out of juice off-grid!

## Quick Answers

- **What is this?** Portable Solar Charger 28W with Digital Ammeter,25.4% High-Efficiency, USB-A/USB-C Ports, Folding Waterproof Solar Panels with Carabiners for Camping, Backpacking, Phones, Tablets, Power Bank by bigblue
- **How much does it cost?** ฿6868 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/43549649-portable-solar-charger-28w-with-digital-ammeter-25-4-high)

## Best For

- bigblue enthusiasts

## Why This Product

- Trusted bigblue brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual USB-A & USB-C Ports:** Smart chip optimizes fast charging up to 4A combined output for all your devices.
- • **Harness Peak Solar Power:** Industry-leading 25.4% sunlight-to-energy conversion for rapid charging anywhere.
- • **Compact & Adventure-Ready:** Lightweight foldable design with carabiners for effortless attachment to backpacks or tents.
- • **Real-Time Digital Ammeter:** Instantly monitor your solar output and maximize energy harvesting on the go.
- • **Rugged & Weather-Resistant:** IP44-rated durable PET fabric withstands rain and rough outdoor conditions.

## Overview

The BigBlue Portable Solar Charger 28W features premium monocrystalline panels with 25.4% efficiency, delivering up to 5V/4A fast charging via USB-A and USB-C ports. Weighing just 1.47 lbs, it folds compactly and includes a digital ammeter for real-time power tracking. Built tough with IP44 water resistance and durable PET fabric, it’s designed for camping, backpacking, and outdoor professionals who demand reliable, eco-friendly power anywhere.

## Description

Buy BigBlue Portable Solar Charger 28W with Digital Ammeter,25.4% High-Efficiency, USB-A/USB-C Ports, Folding Waterproof Solar Panels with Carabiners for Camping, Backpacking, Phones, Tablets, Power Bank: Solar Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Very descent for these money - It’s solid. On the bright sunlight it charges two devices with 2.3-2.4 amps. Good enough to recharge two 10000 mah power banks within several hours. We took it to Yosemite and it did the job. I didn’t take it on the hike, not sure it would work well when attached to the backpack - the angle of the sunlight wouldn’t be good. Works perfectly if you leave it in the camp though. While we were hiking it was completely recharging our power banks. The main con is that if one of the panels is in the shade, the charging is closed to zero. The second one is that the pocket for the device is not insulated and, well, it’s black. So if you put your smartphone there, it will be overheated within a few minutes and will stop charging. At first I think it didn’t work properly though, so here a few tips that I’ve figured: 1. All the panels must be exposed to the sunlight. Even a small shade on the panels affects efficacy dramatically. 2. It’s better to use with powerbanks rather than charge your phones/tablets/whatever directly. 3. Whichever device you are charging, keep it off the sun. The pocket on the solar panel itself doesn’t work at all, and if your device has any overheat protection, it will stop charging pretty soon. If it doesn’t have a protection, it can just explode if the sun brights really hot. I was putting the solar panel on a camping chair with insulated pocket for a cold drinks and putting my power banks in the pocket. Works pretty well. 4. If the sunlight is good, there is no need to try to sustain the good angle (the closer sun rays fall to 90 degrees, the more power the panel will generate). But if it’s not very sunny, try to put something under the panel to keep it directed towards the sun. With that, I think it’s a pretty good solar panel, if you know the above and understand how to use it. Be safe outdoors!
Review: I love this charger (BigBlue 5V 28W with readout) I use ... - I love this charger (BigBlue 5V 28W with readout) I use this to charge multiple battery packs and it is wonderful. I have charged my phone off of this all year so far. I bought a usb multi meter to check voltage. The voltage is regulated well and I have never seen it go above 5.1V. The lowest voltage I have seen on a cloudy day was 4.9, still well within range to charge my battery pack. I live in AZ and get plenty of sun. My battery packs are always charging at max input because this charger has so much power available. I built a stand which I set the solar charger on. The stand can change angles so it can be aimed for the best angle. I have used this to go camping and never needed to plug into the grid to power anything within my camp site. I truly can’t say enough good things about this charger. 1 year update. 12/27/18 Still as strong as the first day I received it. The fabric has faded however, that’s to be expected with as much use as this gets. The Arizona sun is relentless and will fade any fabric. I have used this solar charger to run all of my USB devices and I only need to use it every few days when paired with a proper battery bank. I am now using this charger to charge a ~26,000 ma battery bank (Anker). I charge at 4A and the pack is charged fully within 6-7 hours. This battery lasts my Wife and I 5 full days with both of our phones (3 year old iPhones) from dead to full charge. Even in December, I am able to pull 3.9 A at about 11:00 AM. If you are looking for a great product to help get away from the grid for any reason. This is what you will want. It has plenty of power to charge almost anything USB you can think of, especially when you pair it with a good storage bank. Update: 3/18/2023 Still working great! I have used this hundreds of times by now. Even being over 5 years old, it still puts out 4 amps. My cords are the limiting factor. I still take this with us everywhere. When we’re camping, we never need to worry about our USB powered devices going dead. I always have this charging several battery banks to ensure we are good to go. We truly enjoy this solar panel and have recommended it several times over to friends and family. One thing to note, as with any fabric, the color will fade with the sun. So it does not look “pretty” and new any more, but I think of it as a battle scar and how many good times have been had because it sat out and baked in the sun!

## Features

- Superior Sunlight Harvesting: BigBlue portable solar panel boasts premium, high-efficiency solar cells achieving an impressive 25.4% sunlight-to-power conversion. Featuring a sleek, unobstructed design free from front-facing metal lines, it maximizes light capture for significantly increased power output and enhance heat dissipation, and extending the panel's operational longevity.
- Intelligent Fast Charging Ports: Equipped with dual high-speed ports featuring an intelligent chip for device identification, our solar phone charger dynamically delivers optimal power to your gear: USB-A (max. 5V/2.4A) and USB-C (max. 3A), with a combined output up to 5V/4A. Perfect for fast-charging smartphones, power banks, GPS units, tablets, and more.
- Real-Time Power Monitoring & Ultimate Portability: Conveniently track energy generation with the integrated digital ammeter displaying real-time current output. Real power output depends on sunlight intensity, device placement, temperature, and device compatibility. Designed for adventure, this 1.47lbs foldable solar panel ensures effortless transport and secure attachment during camping, hiking, fishing, or any outdoor explorations.
- Rugged & Weather-Resistant: Engineered with robust, industrial-grade PET polymer fabric and certified IP44 water resistance, this durable solar panel charger withstands occasional rain and damp conditions (Keep USB ports and ammeter dry). The integrated, secured zippered compartment safely stores devices while camping. (Avoid placing phones inside while charging to prevent overheating).
- Effortless Operation: Achieve peak performance by unfolding all four panels under full direct sunlight. Connect your compatible device to the USB ports using the provided cables (Note: This solar charger does not store energy; it charges connected devices directly in direct sun). Complete kit includes: 1xBigBlue 28W Solar Charger, 1xUSB-C to USB-C Cable, 4xDurable Carabiners, plus our responsive and friendly customer service.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| AC Adapter Current | 1 Amps |
| ASIN | B071G4CQSR |
| Best Sellers Rank | #18,156 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #12 in Cell Phone Solar Chargers |
| Brand | BigBlue |
| Connectivity technologies | USB |
| Customer Reviews | 4.2 4.2 out of 5 stars (1,784) |
| Date First Available | June 6, 2017 |
| Efficiency | High Efficiency |
| Global Trade Identification Number | 00768390608786 |
| Included Components | 1X 28W Solar Sharger, 1x USB-C to USB-C cable, 4x Carabiners |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.31 pounds |
| Item model number | B401E |
| Manufacturer | BigBlue |
| Material | Monocrystalline Silicon |
| Maximum Power | 28 Watts |
| Maximum Voltage | 5 Volts |
| Other display features | Wireless |
| Output Voltage | 5 Volts |
| Product Dimensions | 11.2"L x 6.3"W x 0.2"H |
| Special Feature | Charging Indicator, Travel, Waterproof, Short Circuit Protection |
| Special features | Charging Indicator, Travel, Waterproof, Short Circuit Protection |
| UPC | 768390608786 |

## Product Details

- **Brand:** BigBlue
- **Efficiency:** High Efficiency
- **Item Weight:** 595 Grams
- **Material:** Monocrystalline Silicon
- **Product Dimensions:** 11.2"L x 6.3"W x 0.2"H

## Images

![Portable Solar Charger 28W with Digital Ammeter,25.4% High-Efficiency, USB-A/USB-C Ports, Folding Waterproof Solar Panels with Carabiners for Camping, Backpacking, Phones, Tablets, Power Bank - Image 1](https://m.media-amazon.com/images/I/81OfMkn5UyL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: If cloud or shade passes,  does solar charger automatically recover or does it stop charging?**
A: Yes, this 28w solar panel charger can automatically recover to charge your phone

**Q: This solar charger can charge Androids and Apple cellphones and power station?**
A: BigBlue 28w solar panel charger can charge most Androids and Apple cellphones, but our solar phone charger doesn't include the lightning cable for iPhone or iPad. This product comes with 2 5V USB-A output, so it can't charge power station.

**Q: Why the real output is different from the power claimed?**
A: This product has 4 piece panel, each is 7w, so the power is 4*7w=28W;  Theoretical output is 5V/2.4A Max for each port, 5V/4.0A Max in total, the total theoretical power is 5V*4.A=20W Max. But there are loss in the solar energy conversion process.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very descent for these money
*by M***D on September 7, 2022*

It’s solid. On the bright sunlight it charges two devices with 2.3-2.4 amps. Good enough to recharge two 10000 mah power banks within several hours. We took it to Yosemite and it did the job. I didn’t take it on the hike, not sure it would work well when attached to the backpack - the angle of the sunlight wouldn’t be good. Works perfectly if you leave it in the camp though. While we were hiking it was completely recharging our power banks. The main con is that if one of the panels is in the shade, the charging is closed to zero. The second one is that the pocket for the device is not insulated and, well, it’s black. So if you put your smartphone there, it will be overheated within a few minutes and will stop charging. At first I think it didn’t work properly though, so here a few tips that I’ve figured: 1. All the panels must be exposed to the sunlight. Even a small shade on the panels affects efficacy dramatically. 2. It’s better to use with powerbanks rather than charge your phones/tablets/whatever directly. 3. Whichever device you are charging, keep it off the sun. The pocket on the solar panel itself doesn’t work at all, and if your device has any overheat protection, it will stop charging pretty soon. If it doesn’t have a protection, it can just explode if the sun brights really hot. I was putting the solar panel on a camping chair with insulated pocket for a cold drinks and putting my power banks in the pocket. Works pretty well. 4. If the sunlight is good, there is no need to try to sustain the good angle (the closer sun rays fall to 90 degrees, the more power the panel will generate). But if it’s not very sunny, try to put something under the panel to keep it directed towards the sun. With that, I think it’s a pretty good solar panel, if you know the above and understand how to use it. Be safe outdoors!

### ⭐⭐⭐⭐⭐ I love this charger (BigBlue 5V 28W with readout) I use ...
*by E***N on April 3, 2018*

I love this charger (BigBlue 5V 28W with readout) I use this to charge multiple battery packs and it is wonderful. I have charged my phone off of this all year so far. I bought a usb multi meter to check voltage. The voltage is regulated well and I have never seen it go above 5.1V. The lowest voltage I have seen on a cloudy day was 4.9, still well within range to charge my battery pack. I live in AZ and get plenty of sun. My battery packs are always charging at max input because this charger has so much power available. I built a stand which I set the solar charger on. The stand can change angles so it can be aimed for the best angle. I have used this to go camping and never needed to plug into the grid to power anything within my camp site. I truly can’t say enough good things about this charger. 1 year update. 12/27/18 Still as strong as the first day I received it. The fabric has faded however, that’s to be expected with as much use as this gets. The Arizona sun is relentless and will fade any fabric. I have used this solar charger to run all of my USB devices and I only need to use it every few days when paired with a proper battery bank. I am now using this charger to charge a ~26,000 ma battery bank (Anker). I charge at 4A and the pack is charged fully within 6-7 hours. This battery lasts my Wife and I 5 full days with both of our phones (3 year old iPhones) from dead to full charge. Even in December, I am able to pull 3.9 A at about 11:00 AM. If you are looking for a great product to help get away from the grid for any reason. This is what you will want. It has plenty of power to charge almost anything USB you can think of, especially when you pair it with a good storage bank. Update: 3/18/2023 Still working great! I have used this hundreds of times by now. Even being over 5 years old, it still puts out 4 amps. My cords are the limiting factor. I still take this with us everywhere. When we’re camping, we never need to worry about our USB powered devices going dead. I always have this charging several battery banks to ensure we are good to go. We truly enjoy this solar panel and have recommended it several times over to friends and family. One thing to note, as with any fabric, the color will fade with the sun. So it does not look “pretty” and new any more, but I think of it as a battle scar and how many good times have been had because it sat out and baked in the sun!

### ⭐⭐⭐⭐ Puts out the power! Update 7/9/19
*by D***L on June 27, 2019*

So this is my third solar panel. I had a Renogy 100w panel on my van. It worked flawlessly. Then I purchased a Suakoi 24 watt panel like the Big Blue . It worked perfectly fine until it was stolen. So then I purchased this Big Blue because it was rated up to 4 amps output and had the built-in amp meter. I use it to charge my powerbanks when I am camping out. (which is all the time). So far I'm thrilled with it. I camp in the pacific northwest where the sun is usually fighting with the clouds so I wanted something that charges faster than the other brands. It has not let me down. It will charge my Galaxy S9+ in less than 2 hours if the sun is shining (about the same if I plug it into the wall charger) or about 4 hours if it's really cloudy. And it always works when it is cloudy. It will charge my 10,000ma powerbanks in about 4 hours when it's sunny. The most output I've seen is 3.5 amps but I'm sure it will do the full 4 amps if you have the right stuff. I have noticed that the quality of the cables makes a difference. I hope this one doesn't get stolen because I'm really happy with it! I had 2 Ravpower powerbanks hooked up to Big Blue and when the sun came out of the clouds the ammeter climbed up to 4.5 amps. Pretty awesome.

## Frequently Bought Together

- BigBlue Portable Solar Charger 28W with Digital Ammeter, 25.4% High-Efficiency, Dual USB Ports, Folding Waterproof Solar Panels with Carabiners for Camping, Backpacking, Phones, Tablets, Power Bank
- Anker Power Bank(PowerCore 10K),Compact Travel-Ready 10,000mAh Battery Pack with PowerIQ Charging Technology,5V/3A High-Speed Charging for iPhone,iPad,and More (USB-C Input and Output（Black），1pack)
- INIU Portable Charger, Slimmest 10000mAh 5V/3A Power Bank, USB C in&out High-Speed Charging Battery Pack, External Phone Powerbank Compatible with iPhone 16 15 14 13 12 Samsung S22 S21 Google iPad etc

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-02*