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  • Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mah for Smart Phone
  • Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mah for Smart Phone
  • Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mah for Smart Phone
  • Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mah for Smart Phone
  • Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mah for Smart Phone
  • Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mah for Smart Phone
Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mah for Smart Phone
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Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mah for Smart Phone

  • 10 - 99 Pieces
    $2.30
  • 100 - 999 Pieces
    $2.10
  • >= 1000 Pieces
    $1.65

Customization:

Customized logo（Min.Order: 200 pieces）
Graphic customization（Min.Order: 200 pieces）
Customized packaging（Min.Order: 1000 pieces）
View product details

Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mah for Smart Phone

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Replaceable 18650 Battery Design: Enables easy battery replacement for extended lifespan and cost-effective maintenance.
  • Multi-Port Charging: Equipped with USB, triple USB, and micro USB ports to charge smartphones, tablets, and other devices simultaneously.
  • Smart Digital Display: Shows real-time battery level and charging status for efficient power management.
  • Compact Portability: Lightweight, rectangular design with a textured grip surface for easy carrying in bags or pockets.

Key features

  • 1. Material Technology

    • With a textured composite material and reinforced grip design, you can achieve secure handling even in slippery conditions*.

  • 2. Interactive Design

    • With a built-in digital battery level display, you can monitor remaining charge at a glance, eliminating the need to connect devices for verification*.

  • 3. Performance Parameters

    • With a 20,000mAh capacity and triple USB ports (5V 2A Max), you can charge multiple devices simultaneously, offering up to 2x the power of standard 10,000mAh models*.

  • 4. Scenario Solutions

    • With DIY-replaceable 18650 batteries and a compact design, you can adapt to both daily travel needs and extended outdoor use while maintaining portability*.

  • 5. Certification Standards

    • With CE and RoHS certifications, you can ensure compliance with global safety and environmental regulations, surpassing uncertified alternatives*.

Product details

Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mah for Smart Phone

The Easy Replace 18650 Battery DIY Mini USB Power Bank 20000mAh combines portability with customizable functionality. Featuring a sleek, compact design in green, it offers up to 20,000mAh capacity and supports simultaneous charging via triple USB ports. Built with durable PU leather and plastic, it includes a smart digital display for real-time battery monitoring. Certified to CE and RoHS standards, this power bank is ideal for travelers, tech enthusiasts, and professionals needing reliable, on-the-go power solutions.

Technical specifications

FeatureSpecificationBenefit
Battery Capacity20,000mAh (20Ah) or 10,000mAhPowers smartphones up to 5x or tablets 2x
Output PortsTriple USB (5V/2A, 5V/1A) + Micro USBCharges multiple devices simultaneously
MaterialPU leather + Plastic (leather optional)Lightweight, durable, and scratch-resistant
Safety CertificationsCE, RoHSEnsures compliance with global safety standards
DesignMiniaturized, digital displayCompact size with instant battery level visibility
DIY Customization18650 battery compatibilityUser-replaceable batteries for extended use

Customization guide

Adjustable parameters include:

  • Battery Type: Swap 18650 cells to match voltage needs (e.g., high-discharge for gaming devices).
  • Material Finish: Choose between PU leather (standard) or customizable color options for branding.
  • Port Configuration: Upgrade to USB-C or higher-output ports for faster charging.

Get inspired

With its DIY modularity, this power bank empowers users to tailor energy solutions for photography gear, outdoor adventures, or daily commutes. The digital display ensures you never run out of power unexpectedly, while the rugged design withstands daily wear and tear.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Capacity10,000mAh20,000mAh30,000mAh (+50% vs. industry avg.)
PortsDual USBTriple USB + MicroTriple USB-C + PD
MaterialPlasticPU LeatherReinforced Alloy + Leather
Weight300g450g600g (+20% durability)
Safety FeaturesBasic CEOvercharge ProtectionFireproof Housing*

Supplier's note

  1. Breakthrough Features:

    • Digital Display: Enables real-time battery monitoring without device connection.
    • 18650 DIY Compatibility: Allows users to upgrade or replace batteries for extended longevity.
    • Lightweight PU Leather: Balances aesthetics with rugged durability, outperforming plastic-only designs.

  2. Version Selection Guide:

    • Base Model: Ideal for casual users needing 1-2 device charges (e.g., daily commuters).
    • Advanced Model: Perfect for travelers or photographers requiring multi-device support and durability.
    • Pro Model: Designed for professionals (e.g., videographers) needing high capacity, fast charging (USB-C PD), and extreme safety (fireproof housing).

With the Pro’s 30,000mAh capacity, you can charge a smartphone 7+ times—20% more than standard models. Its USB-C Power Delivery ensures compatibility with modern devices, while the alloy-reinforced case withstands drops and impacts. Pair this with user-swappable 18650 cells for seamless energy management in harsh environments.

Frequently asked questions

  • Which portable power bank for travel suits small gadgets and has a compact design?

  • How do I maintain the DIY replaceable 18650 batteries in this power bank?

  • Leather vs. plastic casing: Which material is better for a portable power bank?

  • Can I customize this power bank with a logo or color?

  • Is this power bank’s material FDA-approved for safety?

  • Does the 20000mAh power bank support simultaneous charging via triple USB ports?

  • How do I check the battery level without connecting a device?

  • What are the benefits of a user-replaceable 18650 battery design?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
High-Capacity Power BanksFrequent travel, multi-device chargingIndustry Standard: 20,000mAh+ (e.g., 20Ah)
Our Base: 20,000mAh (4×18650 cells)
Our Advanced: 30,000mAh (6×18650 cells)▲▲		▲▲ Supports 5+ full iPhone chargesBulky, heavier than compact models
Compact/Mini Power BanksDaily carry, small devicesIndustry Standard: <10,000mAh (e.g., 5000mAh)
Our Base: 10,000mAh (lightweight)
Our Advanced: 15,000mAh (slim design)▲		▲ Portable for pocketsLimited capacity for heavy use
DIY/Modular Power BanksTech enthusiasts, DIY projectsIndustry Standard: 2-cell 18650 batteries (10,000mAh)
Our Base: 4-cell (20,000mAh)▲
Our Advanced: 6-cell (30,000mAh)▲▲		▲▲ User-replaceable batteries, repairableRequires technical skill to assemble
Smart Display Power BanksReal-time battery monitoringIndustry Standard: No display
Our Base: LCD screen (battery %)▲
Our Advanced: OLED touchscreen + charging speed display▲▲		▲▲ Instant charge visibilityAdds cost/size compared to basic models
Budget-Friendly Power BanksOccasional use, cost-sensitive usersIndustry Standard: 5000mAh-10,000mAh, single USB port
Our Base: 10,000mAh + 2 USB ports▲		AffordableLimited ports/capacity for heavy users
Premium/High-End Power BanksProfessionals, frequent usersIndustry Standard: 20,000mAh+, fast charging (e.g., USB-C 30W)
Our Base: 20,000mAh + USB-C 20W▲
Our Advanced: 30,000mAh + USB-C 65W + wireless charging▲▲		▲▲ Fast charging, durable materials (e.g., PU leather case)Expensive, bulkier design

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