{"product_id":"diy-18650-usb-power-bank-case-portable-battery-charger-box","title":"DIY 18650 USB Power Bank Case – Portable Battery Charger Box","description":"\n\u003ch2\u003eBuild Your Own Portable USB Power Bank with a Single 18650 Battery\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eDIY 18650 USB Power Bank Charger Case\u003c\/strong\u003e is a compact, easy-to-use enclosure that lets you create your own portable phone charger using a standard 18650 lithium-ion cell (battery sold separately). Whether you need an emergency backup charger for your smartphone, a lightweight travel power source, or a fun electronics project, this DIY battery case delivers reliable 5V\/1A USB output in a pocket-friendly shell.\u003c\/p\u003e\n\n\u003cp\u003eWith its straightforward design and universal USB output, you can keep your devices topped up anywhere — no wall socket required. Simply insert your 18650 battery, plug in your USB cable, and you're ready to go.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible with 1 × 18650 battery\u003c\/strong\u003e — widely available rechargeable lithium-ion cell (not included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB output:\u003c\/strong\u003e 5V \/ 1A for charging smartphones, earbuds, and other USB devices\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput charging:\u003c\/strong\u003e 5V \/ 1A via USB for recharging the 18650 cell inside the case\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage regulator circuit\u003c\/strong\u003e — delivers stable, consistent output to protect your devices\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; portable\u003c\/strong\u003e — slips easily into a pocket, bag, or backpack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY-friendly design\u003c\/strong\u003e — ideal for hobbyists, makers, and electronics enthusiasts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMD components\u003c\/strong\u003e for a clean, reliable internal build\u003c\/li\u003e\n  \u003cli\u003eNo high-concern chemicals; new condition\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 × 18650 Li-ion (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSB Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V \/ 1A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Charging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V \/ 1A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCircuit Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVoltage Regulator (SMD)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 unit (case only)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × DIY 18650 USB Power Bank Charger Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: 18650 battery is NOT included. Please source a quality 18650 lithium-ion cell separately.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/clip-on-car-fan-led-display-199-speeds-usb-type-c\"\u003eClip-On Car Fan LED Display 199 Speeds | USB \u0026amp; Type-C\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.energystar.gov\/products\" target=\"_blank\" rel=\"noopener\"\u003eENERGY STAR product efficiency guidance\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Does the 18650 battery come included with the power bank case?\u003c\/h4\u003e\n\u003cp\u003eA: No, the 18650 lithium-ion battery is not included. You will need to purchase a standard 18650 cell separately and insert it into the case to use it as a portable USB charger.\u003c\/p\u003e\n\u003ch4\u003eQ: What devices can I charge with this DIY 18650 USB power bank case?\u003c\/h4\u003e\n\u003cp\u003eA: The case outputs 5V \/ 1A via USB, making it compatible with smartphones, Bluetooth earbuds, small tablets, and most other USB-powered devices that charge at 5V.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I recharge the 18650 battery using this case?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The case supports 5V \/ 1A USB input, so you can recharge the 18650 cell inside the case by connecting it to any standard USB charger or power source.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this suitable for DIY electronics projects?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. This case is a popular choice among hobbyists, makers, and electronics enthusiasts who want a compact, customizable portable power solution for their projects.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does the 18650 battery come included with the power bank case?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No, the 18650 lithium-ion battery is not included. 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