LED
LCD
Product Description
The 18650 3.7V 3500mAh Rechargeable Li-Ion Battery (Recycled) is a high-capacity energy storage cell recovered from premium battery packs, thoroughly tested, and graded for reliable performance. Offering a nominal 3.7V and an impressive 3500mAh capacity, these high-energy cells deliver dependable power for portable electronics, custom power banks, flashlights, and DIY battery builds while offering an eco-friendly and cost-effective alternative to brand-new cells.
Essential for building custom 12V packs, repairing laptop batteries, powering LED work lights, and supporting DIY electronics projects, this recycled yet tested 18650 cell provides exceptional value and capacity.
⚠️ Safety & Spot Welding Tip: When assembling multi-cell battery packs, always use nickel strips and a proper spot-welding machine rather than soldering directly to the battery terminals. Excessive heat can damage the internal chemistry and create a fire hazard.
Technical & Architectural Highlights
High Energy Capacity (3500mAh): Extended runtimes for power-hungry portable devices, flashlights, and custom power storage arrays.
Tested & Graded Recycled Cells: Expertly harvested from verified decommissioned high-grade packs, tested for voltage retention and internal resistance (IR).
Standard 18650 Form Factor: 18mm diameter by 65mm length fits universally into standard battery holders, flashlights, and custom slot housings.
Reliable Li-Ion Chemistry: Stable 3.7V nominal output (charging up to 4.2V max) with low self-discharge rates.
Technical Specifications
| Parameter | Value / Specification |
| Product Type | Rechargeable Lithium-Ion (Li-Ion) Cylindrical Cell |
| Cell Size | 18650 (18mm x 65mm) |
| Nominal Voltage | 3.7V DC |
| Full Charge Voltage | 4.2V DC |
| Capacity | Approx. 3500 mAh (Tested Grade) |
| Condition | Recycled / Pull (Tested & Graded) |
| Chemistry | Lithium Nickel Manganese Cobalt Oxide (NMC / Similar) |
Applications
Custom Battery Packs & Power Banks: Building 3.7V, 7.4V, or 11.1V battery arrays for robotics and portable gear.
Flashlights & Headlamps: Replacing worn-out or low-capacity cells in high-performance LED torches.
DIY Electronics & Solar Lights: Powering custom Arduino field projects, portable sensors, and solar lighting setups.
What’s in the Box
1 x 18650 3.7V 3500mAh Li-Ion Battery (Recycled / Tested).
All your electronics components, battery cells, and prototyping accessories are available with fast shipping across Egypt from Pro Tronix!
