CONXWAN Solar Charger Power Bank: 27000mAh Portable Outdoor Solar Battery Charger with 3 USB Outputs USB C External Backup Battery Pack with 4 Foldable Panels Compatible with Smart Phone Tablet

I got this to take on a summer vacation and when it arrived it was certainly heavier than I expected. I wasn't sure how often I would use it but I found I used it often, sometimes to run a USB fan, sometimes to charge a phone. It never went flat and usually never dropped below 3/4 charge per overnight use. It does take a while to charge fully, and I never used the solar recharging side, but I am quite impressed with the performance. It is certainly a lot more powerful than my previous power bank. This one is right up against the max TSA carry-on size and it weighs a bit, but if you need reliable multi-use power this was perfect.

I’ve bought solar chargers that stop working after a month. Bought this back in January of 2024. It is now April 2025. I used mine at least four days a week for about two hours a day, and after a year and change of constant use, the solar panel finally stopped working at max efficiency. Still works as a charger block, but definitely high quality for the price.

Very versatile and keeps me ready for most simple charging needs

Got this for an uncle in Panama who lives off grid. He uses it to charge a cell phone and says it works well and the power bank charges pretty well with the solar panels.

This worked well for the first year. Solar charging is slow but was able to keep up charging a phone every few days for a backpacking trip. After a year the capacity started to drop, max of 2 phone charges. Then at a month over 2 years the battery swelled and broke off the panel and is completely dead. This is the shortest lifespan I have had from a power bank