EVE C40 12V LiFePO4 power bank, 80AH battery pack for emergency starting, street vending, PD 100W welder, charging treasure, model airplanes, fishing

Uses four EVE C40 cells in series, with a theoretical capacity of 80AH, cannot be taken on planes or trains

Can output PD100W to charge laptops, the EC5 interface bypasses the battery protection board to start cars and connect spot welders The XT60 interface goes through the protection board, for connecting 12V portable printers for stalls and light strips

Modified to use C40 cells, with larger capacity, my big fish spa printer can work for 4-5 hours when I'm at the stall Crucially, it is much lighter than lead-acid batteries, and can be directly charged via the C port at 60W

If anything is unclear, please leave a comment and ask I will reply as soon as I see it

Disclaimer:
All drawings, wiring diagrams, installation tutorials, and related materials for this project are for personal open-source learning and technical exchange only, are amateur self-made reference solutions, are not standardized industrial products, have no safety certification, and do not guarantee absolute safety and stability
All acts of replicating, modifying, or using the materials of this project are undertaken by the user at their own risk and sole responsibility The project author shall not be liable for any civil, administrative, or criminal responsibility, nor provide any after-sales or safety guarantees for equipment damage, short circuits, fires, electric leaks, property losses, or personal injury caused by improper operation, incorrect wiring, incompatible accessories, manufacturing defects, over-specification use, improper environmental use, etc
This project is strictly prohibited for commercial production, sale, medical equipment, precision instruments, high-risk operations, and other scenarios with strict safety and compliance requirements If you do not accept this disclaimer, please immediately cease using all materials from this project
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2026.7.2 Update:

Added installation tutorial

Added accessories list

Added disclaimer