KA4 power bank case for 4 18650 batteries — is a modern solution for independently creating a powerful Power Bank with a large capacity and support for fast charging. The module is equipped with an intelligent control board that ensures safe battery charging and fast power supply for your devices.
Supports 4 Li-ion 18650 batteries (including without points), which allows you to create a high-capacity power bank for smartphones, tablets, routers and other electronics.
⚙ Working principle
After installing 18650 batteries in the case, the built-in controller:
- 🔋 stores energy in the batteries via the Type-C
- port
- ⚡ converts the battery voltage into stable 5V / 9V / 12V for charging devices
- 🧠 automatically detects the fast charging protocol
- 🛡 provides protection for batteries and connected devices
Intelligent board control monitors current, voltage and temperature, ensuring safe and efficient operation.
⚡ Advantages of the KA4 case
- ✔ Support 4 18650 batteries
- ✔ Works with pointless
- batteries
- ✔ Fast charging PD and QC
- ✔ Modern USB Type-C
- port
- ✔ Charging two devices simultaneously
- ✔ LED indication of the charge level
- ✔ Built-in LED flashlight
- ✔ Protection against overcharging, short circuit and overload
📱 Support for fast charging protocols charging
- ⚡ PD3.0 / PD2.0 / PPS
- ⚡ QC4+ / QC4 / QC3.0 / QC2.0
- ⚡ AFC
- ⚡ FCP
- ⚡ SCP
- ⚡ PE2.0 / PE1.1
- ⚡ SFCP
🔋 What can be used for
- 📱 charging smartphones
- 📟 charging tablets
- 📡 powering routers
- 🎮 portable consoles
- 📷 cameras and electronics
- 🚗 backup power on the road
- 🏕 use in hiking
📊 Technical specifications
| Battery type | 18650 Li-ion |
| Number of batteries | 4 |
| Input | USB Type-C |
| Output | 5V4.5A / 4.5V5A / 9V2A / 12V1.5A |
| Protocols | PD, QC, AFC, FCP, SCP, PPS |
| Outputs | 2 × USB |
| Indication | LED display |
| Additionally | LED flashlight |
⚠ 18650 batteries are not included
KA4 power bank case — the perfect solution for creating a powerful, modern and reliable Power Bank with your own hands.
Order now at WST and create your own powerful power bank 🔋
Tags: power bank case, KA4, 4 18650 batteries, USB, Micro-USB, Type-C, Quick Charge 3.0, QC3.0, portable charging









