Product input: 5V2.1A. Product output: 5V2.1A. Supports 21700 high-capacity lithium batteries, easy assembly, and adapts to various DIY needs. Product battery cell: 21700 1 (flat head battery). DIY power bank case 1 (style to choose from).

Supports high-capacity 21700 lithium batteries for easy assembly. Battery Type: 21700 x 1 (flat-top battery). DIY Power Bank x 1 (style of your choice). Lightweight and portable design, compact and elegant.

Supports high-capacity 21700 lithium batteries for easy assembly. Battery Type: 21700 x 1 (flat-top battery). DIY Power Bank x 1 (style of your choice). Lightweight and portable design, compact and elegant.

Supports high-capacity 21700 lithium batteries for easy assembly. Battery Type: 21700 x 1 (flat-top battery). DIY Power Bank x 1 (style of your choice). Lightweight and portable design, compact and elegant.

Product input: 5V2.1A. Product output: 5V2.1A. Supports 21700 high-capacity lithium batteries, easy assembly, and adapts to various DIY needs. Product battery cell: 21700 1 (flat head battery). DIY power bank case 1 (style to choose from).

Supports high-capacity 21700 lithium batteries for easy assembly. Battery Type: 21700 x 1 (flat-top battery). DIY Power Bank x 1 (style of your choice). Lightweight and portable design, compact and elegant.

Supports high-capacity 21700 lithium batteries for easy assembly. Battery Type: 21700 x 1 (flat-top battery). Our products include all kits&welded products for Andruino, Raspberry Pi, or mini flights.