{"product_id":"diy-power-bank-case-18650-batteries-secure-lock-shell","title":"DIY Power Bank Case for 2×18650 Batteries | Secure Lock Shell","description":"\n\u003ch2\u003eDIY Power Bank Case for 2×18650 Batteries — No Soldering Required\u003c\/h2\u003e\n\u003cp\u003eKeep your devices charged on the go with this compact, lightweight \u003cstrong\u003eDIY Power Bank Case\u003c\/strong\u003e designed for two 18650 flat-top batteries. Whether you're commuting, traveling, or heading outdoors, this portable battery housing lets you swap batteries in seconds — no tools, no soldering, no hassle.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo-Solder Assembly:\u003c\/strong\u003e Snap-together design means anyone can assemble or swap batteries quickly — no professional tools or technical experience needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Plastic Construction:\u003c\/strong\u003e Made from quality plastic that balances sturdy protection with a lightweight, pocket-friendly profile.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecure Lock Shell:\u003c\/strong\u003e A built-in locking mechanism keeps the case firmly closed during use, preventing accidental battery displacement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Battery Management:\u003c\/strong\u003e Supports 2× 18650 flat-top batteries (not included), making it easy to carry spare cells and extend your power supply wherever you are.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Travel-Ready:\u003c\/strong\u003e Measures approx. 90 × 45 × 23 mm (3.54 × 1.77 × 0.9 in) — fits easily in a pocket, bag, or backpack.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor Options:\u003c\/strong\u003e Available in classic Black or clean White.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Approx. 90 × 45 × 23 mm \/ 3.54 × 1.77 × 0.9 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Batteries:\u003c\/strong\u003e 2× 18650 flat-top batteries (NOT included — must be purchased separately)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColors:\u003c\/strong\u003e Black, White\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Battery Box \/ Power Bank Case\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003e⚠ Important Notes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e18650 batteries are \u003cstrong\u003enot included\u003c\/strong\u003e — purchase separately.\u003c\/li\u003e\n  \u003cli\u003eCompatible with \u003cstrong\u003eflat-top\u003c\/strong\u003e 18650 batteries only (positive electrode must be flat).\u003c\/li\u003e\n  \u003cli\u003eObserve correct polarity (+ \/ −) when installing batteries.\u003c\/li\u003e\n  \u003cli\u003eAfter installing batteries, \u003cstrong\u003efully charge and activate\u003c\/strong\u003e the case before use.\u003c\/li\u003e\n  \u003cli\u003ePlease allow 1–3 cm variance due to manual measurement.\u003c\/li\u003e\n  \u003cli\u003eColors may vary slightly from screen to screen due to monitor differences.\u003c\/li\u003e\n  \u003cli\u003ePower bank case only — no accessories shown in product images are included.\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: What type of 18650 batteries are compatible with this power bank case?\u003c\/h4\u003e\n\u003cp\u003eA: This DIY power bank case is compatible with 2× 18650 \u003cstrong\u003eflat-top\u003c\/strong\u003e batteries only. Button-top 18650 batteries will not fit correctly. Batteries are not included and must be purchased separately.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Do I need any special tools or soldering skills to assemble this 18650 battery case?\u003c\/h4\u003e\n\u003cp\u003eA: No tools or soldering are required. The no-solder snap-together design makes assembly simple and straightforward — ideal for beginners and experienced users alike.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the size of the DIY power bank case?\u003c\/h4\u003e\n\u003cp\u003eA: The case measures approximately 90 × 45 × 23 mm (3.54 × 1.77 × 0.9 in), making it compact and easy to carry during travel, commuting, or outdoor activities.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What type of 18650 batteries are compatible with this power bank case?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This DIY power bank case is compatible with 2× 18650 flat-top batteries only. Button-top 18650 batteries will not fit correctly. Batteries are not included and must be purchased separately.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need any special tools or soldering skills to assemble this 18650 battery case?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No tools or soldering are required. 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