Gaiaray Power Bank Case Design and DIY Battery Storage Features
This DIY battery storage case features four independent slots with smart charging circuitry that recognizes and optimizes charging for 18650, 21700, and 26650 cell types commonly used in portable photography, fishing equipment, and emergency lighting. The modular design lets outdoor enthusiasts customize their portable power bank by selecting appropriate high-capacity cells matching their specific energy requirements and budget constraints. Integrated USB and Type-C charging ports provide dual connection options for connecting to solar panels, wall adapters, or portable chargers during camping and RV expeditions. Durable construction protects your custom-assembled battery storage system from impacts, moisture, and temperature swings encountered during backcountry hiking, fishing trips, and outdoor emergency situations. Smart charging technology prevents overcharge and short circuits while the case design maintains proper cell spacing for safe operation and heat dissipation during intensive use.
AliExpress Shopper –
Compact mobile battery as seen in the image 🔋 I thought there might be one so I bought it to see. 😊
I saw the item that arrived, and indeed it’s a compact and easy-to-carry mobile battery. 🔋 It was. 👍
When assembling, since there are only + and – on the board, I thought it might be a parallel 4-piece set, but it worked well after assembling. 👍 👍 😊
В***ч –
I liked the power bank, it’s a DIY type. Four 21700 batteries fit perfectly, and they don’t wobble after closing the lid. The only thing is that I had to solder the assembly and the terminals. There is a simple QC3 22.5W fast charging option, but the cable needs to be compatible.
Y***i –
The package arrived quickly. I connected four batteries in parallel using spot welding and soldered them to the circuit board. It works fine. I am satisfied with the purchase.