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3.7V 1800mAh 18650 Battery
High-capacity rechargeable 18650 lithium-ion battery delivering reliable 3.7V power with 1800mAh capacity. The industry-standard 18650 form factor makes this cell ideal for portable electronics, battery packs, flashlights, DIY power banks, and countless maker projects. Available from The Engineer Store, Bengaluru with fast shipping and full warranty support.
Specifications
| Battery Type | 18650 Lithium-Ion (Li-ion) Rechargeable |
| Nominal Voltage | 3.7V |
| Capacity | 1800mAh |
| Charge Voltage | 4.2V (max) |
| Discharge Cut-off Voltage | 2.75V |
| Dimensions | 18mm diameter × 65mm length (standard 18650) |
| Chemistry | Lithium-Ion |
| Cycle Life | 300–500 charge/discharge cycles |
| Weight | ~45g (approx.) |
| Operating Temperature | -20°C to 60°C |
| Built-in Protection | Overcharge, over-discharge, and short-circuit protection (PCB protected) |
| Origin | Original / Authentic |
| Warranty | 1 Year Manufacturer |
| Support | Email & WhatsApp 24/7 |
Key Features
- Reliable 1800mAh Capacity: Provides sustained power for extended run times in portable devices and DIY builds.
- Standard 18650 Form Factor: Universally compatible 18mm × 65mm cylindrical cell fits standard battery holders, sleds, and enclosures.
- Stable 3.7V Output: Consistent nominal voltage throughout the discharge curve for predictable circuit performance.
- Built-in Protection Circuit: Integrated PCB safeguards against overcharging, deep discharge, and short circuits for safer operation.
- High Cycle Life: Rated for 300–500 full charge/discharge cycles, delivering long-term value and dependable rechargeability.
- Wide Temperature Range: Operates reliably from -20°C to 60°C, suitable for indoor and outdoor applications.
- Lightweight & Compact: Weighing approximately 45g, ideal for weight-sensitive portable and wearable projects.
- Rechargeable & Eco-Friendly: Hundreds of reuse cycles reduce waste compared to disposable batteries.
Why Choose This?
- 100% authentic cells sourced from trusted, authorized suppliers
- Genuine rated capacity — no inflated or misleading mAh claims
- Protection circuitry included for safe charging and discharging
- 2–3 day shipping across India from our Bengaluru warehouse
- Expert technical support to help you integrate into any project
- Ideal for both prototyping and production-level builds
Project Ideas
- DIY Power Bank: Combine multiple 18650 cells with a TP4056 charging module and boost converter to build a custom portable charger for smartphones and tablets.
- Arduino & ESP32 Portable Projects: Power your microcontroller projects on the go — perfect for IoT sensor nodes, weather stations, and GPS trackers that need untethered operation.
- High-Power LED Flashlight: Drive CREE or COB LEDs for a compact, rechargeable torch with hours of bright illumination.
- Battery Pack Assembly: Wire cells in series or parallel configurations (with a BMS) to create custom battery packs for robotics, e-bikes, drones, or UPS backup systems.
- Solar Energy Storage: Pair with a solar panel and charge controller to store harvested energy for off-grid lighting, sensor networks, or emergency power.
- Learning & Education: Excellent for students studying battery chemistry, voltage regulation, power management ICs, and electrical engineering fundamentals.
- RC Vehicles & Drones: Lightweight and energy-dense power source for remote-controlled cars, boats, and small quadcopters.
Recommended Accessories
- TP4056 Li-Ion Charger Module: Safe, dedicated single-cell charging with micro-USB input and charge status LEDs.
- 18650 Battery Holder: Spring-loaded plastic holders available in 1-slot, 2-slot, and 4-slot configurations for easy integration.
- BMS (Battery Management System): Essential for multi-cell series/parallel packs — balances cells and provides protection.
- Nickel Strips: For spot-welding cells into permanent battery packs.
- MT3608 Boost Converter: Step up the 3.7V output to 5V, 9V, or 12V
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3.7V 1800mAh 18650 Battery
High-capacity rechargeable 18650 lithium-ion battery delivering reliable 3.7V power with 1800mAh capacity. The industry-standard 18650 form factor makes this cell ideal for portable electronics, battery packs, flashlights, DIY power banks, and countless maker projects. Available from The Engineer Store, Bengaluru with fast shipping and full warranty support.
Specifications
| Battery Type | 18650 Lithium-Ion (Li-ion) Rechargeable |
| Nominal Voltage | 3.7V |
| Capacity | 1800mAh |
| Charge Voltage | 4.2V (max) |
| Discharge Cut-off Voltage | 2.75V |
| Dimensions | 18mm diameter × 65mm length (standard 18650) |
| Chemistry | Lithium-Ion |
| Cycle Life | 300–500 charge/discharge cycles |
| Weight | ~45g (approx.) |
| Operating Temperature | -20°C to 60°C |
| Built-in Protection | Overcharge, over-discharge, and short-circuit protection (PCB protected) |
| Origin | Original / Authentic |
| Warranty | 1 Year Manufacturer |
| Support | Email & WhatsApp 24/7 |
Key Features
- Reliable 1800mAh Capacity: Provides sustained power for extended run times in portable devices and DIY builds.
- Standard 18650 Form Factor: Universally compatible 18mm × 65mm cylindrical cell fits standard battery holders, sleds, and enclosures.
- Stable 3.7V Output: Consistent nominal voltage throughout the discharge curve for predictable circuit performance.
- Built-in Protection Circuit: Integrated PCB safeguards against overcharging, deep discharge, and short circuits for safer operation.
- High Cycle Life: Rated for 300–500 full charge/discharge cycles, delivering long-term value and dependable rechargeability.
- Wide Temperature Range: Operates reliably from -20°C to 60°C, suitable for indoor and outdoor applications.
- Lightweight & Compact: Weighing approximately 45g, ideal for weight-sensitive portable and wearable projects.
- Rechargeable & Eco-Friendly: Hundreds of reuse cycles reduce waste compared to disposable batteries.
Why Choose This?
- 100% authentic cells sourced from trusted, authorized suppliers
- Genuine rated capacity — no inflated or misleading mAh claims
- Protection circuitry included for safe charging and discharging
- 2–3 day shipping across India from our Bengaluru warehouse
- Expert technical support to help you integrate into any project
- Ideal for both prototyping and production-level builds
Project Ideas
- DIY Power Bank: Combine multiple 18650 cells with a TP4056 charging module and boost converter to build a custom portable charger for smartphones and tablets.
- Arduino & ESP32 Portable Projects: Power your microcontroller projects on the go — perfect for IoT sensor nodes, weather stations, and GPS trackers that need untethered operation.
- High-Power LED Flashlight: Drive CREE or COB LEDs for a compact, rechargeable torch with hours of bright illumination.
- Battery Pack Assembly: Wire cells in series or parallel configurations (with a BMS) to create custom battery packs for robotics, e-bikes, drones, or UPS backup systems.
- Solar Energy Storage: Pair with a solar panel and charge controller to store harvested energy for off-grid lighting, sensor networks, or emergency power.
- Learning & Education: Excellent for students studying battery chemistry, voltage regulation, power management ICs, and electrical engineering fundamentals.
- RC Vehicles & Drones: Lightweight and energy-dense power source for remote-controlled cars, boats, and small quadcopters.
Recommended Accessories
- TP4056 Li-Ion Charger Module: Safe, dedicated single-cell charging with micro-USB input and charge status LEDs.
- 18650 Battery Holder: Spring-loaded plastic holders available in 1-slot, 2-slot, and 4-slot configurations for easy integration.
- BMS (Battery Management System): Essential for multi-cell series/parallel packs — balances cells and provides protection.
- Nickel Strips: For spot-welding cells into permanent battery packs.
- MT3608 Boost Converter: Step up the 3.7V output to 5V, 9V, or 12V