18650 DIY Battery Case with LED Indicators & USB Output
18650 DIY Battery Case with LED Indicators & USB Output
18650 DIY Power Battery Case – Portable Charging Shell with LED Indicators
Build your own compact portable charger with this lightweight 18650 Battery Case. Designed for DIY enthusiasts, students, business professionals, and outdoor adventurers, this high-gloss plastic shell lets you convert a single 18650 cell into a handy USB power source for smartphones, tablets, digital cameras, and more.
Made in Mainland China.
Key Features
- Easy DIY Assembly: Simple, user-friendly design — snap in your 18650 battery and you're ready to go.
- Clear LED Status Indicators: Red flashing light during charging, solid red when fully charged, and blue light active during discharge — always know your battery status at a glance.
- Built-in Protection Circuits: Safeguards against overcharging, over-discharging, and short-circuits for a secure and dependable experience.
- Wear-Resistant Construction: Made from durable, eco-friendly high-gloss plastic that stands up to daily use.
- USB Output: Conveniently charges smartphones, tablets, and other USB-powered devices on the go.
- Compact & Portable: Slim, pocket-friendly form factor ideal for camping, hiking, travel, and daily commutes.
Specifications
| Item | Battery Shell Case |
| Material | High-gloss eco-friendly plastic |
| Compatible Battery | 1 × 18650 (not included) |
| Dimensions | Approx. 23 × 27 × 98 mm (0.91 × 1.06 × 3.86 in) |
| Capacity Range | 1200–3000 mAh (depends on battery used) |
| Input | DC 5V / 1.0A |
| Output | DC 5V / 1.0A (USB) |
| Charging Time | 3–4 hours |
| LED Indicators | Red (charging/full) / Blue (discharging) |
| Color | Optional |
Package Includes
- 1 × 18650 Battery Case Shell
Note: Battery is NOT included. Please ensure correct polarity (+/−) when inserting the battery. Allow ±1–2 cm variance due to manual measurement.
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Learn more: EPA guidance on lithium-ion battery handling
Frequently Asked Questions
Q: Does the 18650 battery case come with a battery included?
A: No, the battery case does not include a battery. You will need to supply your own compatible 18650 lithium cell. Please ensure you insert the battery with the correct polarity (positive and negative poles aligned as marked).
Q: What devices can I charge using this 18650 battery case?
A: This battery shell outputs DC 5V / 1.0A via USB, making it compatible with a wide range of devices including smartphones, tablets, digital cameras, and most other USB-powered electronics.
Q: How do I know when the battery is fully charged?
A: The built-in LED indicator makes it easy — the red light flashes while charging and stays solid when the battery is fully charged. The blue light turns on when the case is actively discharging power to your device.
Q: Is this battery case safe to use?
A: Yes. The case includes built-in protection circuits against overcharging, over-discharging, and short-circuits, providing a secure and user-friendly experience during both charging and discharging.
Production & Packaging Notice
To 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.