Product Description
Yisenneng's power bank features a true 27000mAh high capacity, easily charging phones, tablets, earbuds and other devices multiple times—no battery anxiety for outdoor trips or business commutes. With multi-port compatibility and dual output, it charges two devices simultaneously, efficient and convenient. Enhanced safety protections include overcharge, over-discharge, short-circuit and over-temperature safeguards, ensuring stable charging and extending device/power bank lifespan. Slim, lightweight and portable with high-density cells and a minimalist design, it fits easily in bags or pockets without taking extra space. Compatible with multiple fast-charging protocols, it boosts charging speed significantly, replenishing power quickly and saving time.
Product specifications
Parameter Name | Parameter Value | Parameter Name | Parameter Value |
Nominal Voltage（V） | 22.2 | Nominal Capacity（Ah） | 27000 |
Battery Type | 21700 Lithium Battery Pack | Configuration | 6S1P (6 Series 1 Parallel) |
Cycle Life (Cycles) | 1000 | Cell Grade | Grade A Cell |
Charging Voltage（V） | 25.2 | Discharge Voltage（V） | 24V 20V 19V 15V 5V |
Maximum Continuous Discharging Current（A） | 2.5 | Maximum Continuous Charging Current（A） | 5 |
Weight（g） | 600 | Dimensions（mm） | 58*52.9*154 |
Product parameters
Parameter Name | Parameter Value |
Battery Type | 21700 Lithium Battery |
Battery Capacity | 3.7V /27000mAh/99.9Wh |
Product Dimensions | 58*52.9*154 mm |
Product Net Weight | 600g |
Input Specification | |
DC1(5521) | 25.2V/2.5V |
Type-C | PD 5V/3A ,9V/3A ,12V/3A ,15V/3A ,20V/5V,100W Max |
Output Specification | |
DC1(5521) | 22.2V（25.2-18V）/5A |
DC2(4017) | 19.5V/3A ,60W Max. |
Type-C | PD 5V/3A,9V/3A,12V/3A,15V/3A,20V/5A,100W Max |
USB-A | QC3.0 , 5V/3A,9V/2A,12V/1.5A,18W Max |
Product Display
27000mAh
high capacity & long-lasting
99.9Wh super endurance, fully meeting needs for outdoor trips
emergency backup and multi-device power.Whether camping, hiking
long-distance road trips, business travels or home emergencies
it provides durable power for phones, tablets, laptops
cameras, small appliances and more
Strong endurance remains even after multiple charges.
Four output ports
140W Max high power with 4-output design
compatible with USB-A, Type-C and other interfaces
Charges phones, tablets, laptops, Bluetooth earbuds
and more simultaneously meeting multi-device charging needs
and quickly replenishing power for high-power devices in a short time
Power Bank DC5521 to DC5521 DC5521 to DC4017
User Manual USB-A to Type-C Type-C
Complete product package
The configuration includes a 27000mAh high-capacity power bank
user manual, DC5521 to DC5521 cable, and DC5521 to DC4017 cable
These DC conversion cables precisely fit DC-interface devices
meeting charging needs for outdoor small appliances
The USB-A to Type-C cable and Type-C cable fully cover mainstream devices like phones, tablets and laptops
Portable
All-in-one interfaces cover all charging needs—
no extra chargers/adapters, simplifying travel gear
Outputs include Type-C, USB-A, DC (three mainstream ports)
fitting phones, tablets, outdoor gadgets, smart wearables, etc.
Size & Interface
Key Switch DC1 Input/Output
Type-C Input/Output D2 Input USB-A Input
Quality Control
Since its establishment, the Yisenneng Technology Center has formed a stable and innovative lithium battery module system R&D team. The technical center's engineering team has professional and technical personnel including industrial design, electronics, power supply, structure, process, software, measurement and control, electrochemistry, etc.
The development concept is based on "integrated innovation", "project management", "elite team" and "process originality", fully highlighting the unique core competitiveness of "fast response, excellence, customization and strong guarantee", so as to fully meet the special needs of special users for special products, and continuously create value for users in the whole process of serving special users.
Application Cases
This 21700mAh power bank, with multi-port and wide-power output advantages, works seamlessly with various devices. It charges phones and tablets daily, meets fast-charging needs for multiple devices during outdoor camping, and provides emergency power for laptops without heavy adapters. For road trips or outdoor shooting, it stably powers cameras, mini projectors and Bluetooth speakers via included DC conversion cables—an all-around power companion for daily use and emergencies.
Service
Service Purpose
Provide customers with professional, fast, thoughtful and high-quality pre-sales and after-sales services.
Service Scope
All Yisenneng products purchased through regular sales channels will enjoy the after-sales service provided by our company during the warranty period.
Service Content
If there are any quality problems within 7 days, the product can be returned or exchanged if the product appearance and packaging are intact (except for customized batteries)
If there are any quality problems within one year, it can be sent back for warranty (battery damage caused by human factors such as water ingress, battery power loss, etc. is not covered by the warranty)
The shelf life of the product after the warranty is the remaining days of the original warranty period. Paid maintenance can be provided after the warranty period
