In today’s digital world, running out of phone battery can feel more stressful than losing your keys. But did you know you can make a functional portable charger in just five minutes using items you probably already have at home?

In this article, we’ll show you how to build one with a clever, low-cost method—perfect for emergencies.

What Is a DIY Portable Charger?

A DIY portable charger is an improvised device that lets you charge your phone when you don’t have access to a power outlet. While it won’t replace a commercial power bank, it can save the day in situations like travel, power outages, or outdoor adventures.

Materials You’ll Need

• An old USB cable (ideally the type that fits your phone)
• A battery holder (for 2 to 4 AA batteries)
• 2 to 4 fresh AA batteries
• Electrical or duct tape
• A female USB connector (if your battery holder doesn’t already have one)

Step-by-Step Instructions

1. Cut the USB cable
Use scissors or a utility knife to cut your old USB cable. Keep the end with the USB plug—you’ll connect this to your phone.