1.2-6S battery can be set, maximum 45W charging and discharging, standby power consumption 100μA. Power: Maximum 45W. Module interface Fast charging module 1. USB port: with protocol output interface.
eBay
4x18650 Battery Charge Storage Box 5V 2A Dual USB Type C DIY Power Bank Case For Android Micro USB
Aliexpress UK
Model: L12. Feature: 1. Output Power: 10W. Battery Type: 12pcs 18650 Flattop Batteries (Not Included). Large Power Amount: Large capacity, can load 12x18650 batteries (not included), that the DIY power bank can have a large amount of power.
eBay
DIY 18650 Power Bank Case 4 in 1 Battery Charge Storage Box Shell Micro USB Type C with Flashlight
Aliexpress UK
Inner Battery Charging: Suitable for 18650 lithium battery (battery not included). Model: L10 10W. Item Type: 18650 Battery Holder. Battery Type: 18650 Battery x 10 (Not Included). 1 x Battery Holder (Battery Not Included).
eBay
8*18650 Power Bank Cases Battery Holder Portable Dual USB Type C Charge Shell for iPhone Xiaomi
Aliexpress UK
Looking for a power bank but the only ones available are bulky and hard to fit in your pocket?. Introducing the Vida IT vCard 2500mAh Power Bank. The vCard is ultra compact and easy to carry, not much bigger than a credit card and only 8mm thick.
eBay
5V 2A 6000mAh 2X 18650 USB Type-C Battery Charger Case DIY Power Bank Box For Phone Electronic
Aliexpress UK
eBay
Dual USB Micro USB Type C Power Bank Shell 5V DIY Shell 18650 Holder Cases Detachable Battery Charge
Aliexpress UK
The vCard+ is a neat compact travel power bank, perfect for recharging your phone on the go. Extra slim design, a built-in micro USB cable with iPhone and USB-C adapters. Plus all Android, Nokia Phones, Tablet PCs,Kindle Fire and other USB powered devices.
eBay
5V 2A 6000mAh 2X 18650 USB Type-C Battery Charger Case DIY Power Bank Box For Phone Electronic
Aliexpress UK
The vCard+ is a neat compact travel power bank, perfect for recharging your phone on the go. Extra slim design, a built-in micro USB cable with iPhone and USB-C adapters. Compatible with All Phones and USB Devices.
eBay
18650 DIY Battery Power Bank Dual USB Type-C 5V For Phone Charging for iPhone Xiaomi Huawei Storage
Aliexpress UK
DIY design, easy and convenient to use. Perfect for outdoor travel use. The color of the project may be slightly different from the image due to different lighting and screen. Conversion rate: 90 (%).
eBay
165W 10000mah Power Bank Color Display Screen With a Built-in Type-C Cable 120W for Phone PPS PD
Aliexpress UK