Dual USB-C 18650 Battery Holder Power Bank Case

This power bank case is engineered for DIY enthusiasts to build a reliable portable charger using flat head 18650 batteries (max 65mm length). Featuring a dual USB Type C interface, it supports easy charging and activation of the installed batteries.

Its design emphasizes safety with an anti-short circuit motherboard and protection chip, ensuring durability during regular use when batteries are correctly installed.

Compatible with unprotected flat head 18650 batteries with internal resistance under 60 milliohms and discharge rates above 1C.

Not suitable for modified, welded, or substandard batteries. Using disassembled batteries repeatedly may degrade performance and affect user experience.

• Supports only flat head 18650 batteries without protection plates
• Do not use disassembly batteries for extended periods
• Installation prevents reversed polarity damage with anti-chip and anti-burning features

The motherboard includes anti-installation and anti-burning chips to protect against incorrect battery insertion and shorts.

Springs are integrated into the body; a battery skin or short circuit could cause spring damage, but correct reinstallation restores functionality.

• Anti-reverse installation chip for circuit protection
• Built-in anti-burning motherboard safeguard
• Spring mechanism designed for durability with correct use

• Battery type: Flat head 18650 (65mm max length)
• Internal resistance: ≤ 60 milliohms
• Discharge rate: > 1C
• Ports: Dual USB Type-C

One power bank case shell – battery not included.

• 1 x Power Bank Case (Battery not included)