21700 Battery Holder Power Bank Case PD 20W Fast Charging Built-in Cable Detachable Power Bank DIY Battery Case

Features1. Solder-free design ensures safer, more convenient DIY assembly—no soldering required, ideal for electronics enthusiasts seeking quick setup2. Supports up to PD 20W output, compatible with mainstream Type-C devices for faster charging and enhanced efficiency3. Features a detachable dual-cable Type-C design for easy storage, eliminating the hassle of forgetting charging cables on the go4. Shell allows effortless disassembly for battery replacement or circuit board maintenance, extending product lifespan5. Specifically designed for single 21700 batteries, compact size ideal for outdoor activities, commuting, and on-the-go useHousing Material: Eco-friendly plastic shellColors: Black/GrayRecommended: 1 flat-top 21700 batteryInstallation Note: Distinguish positive/negative terminals—spring indicates negativeMainboard Configuration: USB fast-charge output port + Type-C bidirectional fast-charge port + integrated Type-C fast-charge cableIntegrated Cable Interface: Type-C port (dual Type-C connectors)Charging Parameters: 5V2A/5V3A/9V2.2A/12V1.67AOutput Parameters: 5V2A/5V3A/9V2.2A/12V1.67A/10V2.25AFour indicator lights display battery level. All four lights remain on when fully charged. Green light indicates fast charging status.This kit features multiple protections including overcharge/over-discharge/overvoltage/overcurrent, ensuring safe and reliable use.Package includePower Bank Housing*1