31% off
3.7V 2000mAh 18650 Li-Ion Rechargeable Battery
High-capacity 18650 lithium-ion rechargeable battery delivering reliable 3.7V power at 2000mAh. Ideal for flashlights, power banks, portable electronics, robotics, and DIY energy storage projects. Available at The Engineer Store, Bengaluru with fast shipping and full warranty.
Specifications
| Battery Type | 18650 Lithium-Ion (Li-Ion) Rechargeable |
| Nominal Voltage | 3.7V |
| Capacity | 2000mAh |
| Charging Voltage | 4.2V (max) |
| Cut-off Voltage | 2.75V (min) |
| Dimensions | 18mm diameter x 65mm length (standard 18650) |
| Chemistry | Lithium-Ion |
| Cycle Life | 500+ charge/discharge cycles |
| Max Continuous Discharge | ~1C (2A typical) |
| Weight | ~45g per cell |
| Internal Resistance | <=80mOhm |
| Operating Temperature | -20 degreesC to +60 degreesC |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- Standard 18650 Form Factor: Universally compatible with 18650 battery holders, chargers, and enclosures used across thousands of devices and projects.
- 2000mAh Capacity: Provides substantial energy storage - enough to power an LED flashlight for hours or run a microcontroller-based project for extended periods.
- Stable 3.7V Output: Consistent nominal voltage ideal for directly powering 3.3V circuits (with LDO regulator) or 5V circuits (with boost converter).
- 500+ Cycle Lifespan: Retains at least 80% capacity after 500 full charge/discharge cycles, making it cost-effective for long-term use.
- Low Self-Discharge: Retains charge during storage - ready to use even after weeks of sitting idle.
- Lightweight & Compact: At roughly 45 grams, offers one of the best energy-to-weight ratios among rechargeable battery types.
- Wide Temperature Range: Operates reliably from -20 degreesC to +60 degreesC, suitable for both indoor electronics and outdoor field applications.
Why Choose This?
- 100% authentic cells sourced from trusted suppliers - no recycled or re-wrapped batteries
- Tested and verified capacity before dispatch
- 1-5 day shipping, 7-8 day delivery from Bengaluru warehouse across India
- Expert technical support for battery integration and charging circuit design
- Ideal balance of capacity, discharge rate, and cost for most applications
Project Ideas
- DIY Power Bank: Combine 2-4 cells with a TP4056 charging module and 5V boost converter to build a custom portable charger for phones and tablets.
- Solar Energy Storage: Pair with a solar panel and charge controller to create a small off-grid energy system for sensors, lights, or IoT devices.
- Robotics & RC Projects: Power Arduino, ESP32, or Raspberry Pi-based robots with a compact, rechargeable energy source that's easy to swap.
- Portable LED Flashlight: Build a high-brightness tactical flashlight - the 18650 is the standard cell used in most professional-grade torches.
- IoT & Remote Sensors: Deploy battery-powered environmental monitoring stations, weather sensors, or GPS trackers in remote locations.
- Battery Pack Assembly: Connect multiple cells in series or parallel to create custom battery packs (e.g., 7.4V, 11.1V, or higher capacity configurations) for drones, e-bikes, or UPS systems.
- Learning & Education: Understand lithium-ion chemistry, charging profiles, BMS (Battery Management System) design, and energy calculations hands-on.
Important Usage & Safety Notes
- Always use a proper Li-Ion charger (TP4056 recommended) - do NOT charge above 4.2V
- Do not discharge below 2.75V to prevent permanent cell damage
- Use a BMS (Battery Management System) when connecting multiple cells in series or parallel
- Avoid short-circuiting terminals - Li-Ion cells can deliver high current and may overheat
- Do not puncture, crush, or expose to fire
- Store in a cool, dry place at approximately 3.7V-3.8V for long-term storage
- Use appropriate 18650 battery holders for secure mechanical and electrical connections
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy 3.7v 2000mah 18650 Li-Ion Battery Online in India
Purchase the 3.7v 2000mah 18650 Li-Ion Battery online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on 3.7v 2000mah 18650 Li-Ion Battery with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy 3.7v 2000mah 18650 Li-Ion Battery at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
3.7V 2000mAh 18650 Li-Ion Rechargeable Battery
High-capacity 18650 lithium-ion rechargeable battery delivering reliable 3.7V power at 2000mAh. Ideal for flashlights, power banks, portable electronics, robotics, and DIY energy storage projects. Available at The Engineer Store, Bengaluru with fast shipping and full warranty.
Specifications
| Battery Type | 18650 Lithium-Ion (Li-Ion) Rechargeable |
| Nominal Voltage | 3.7V |
| Capacity | 2000mAh |
| Charging Voltage | 4.2V (max) |
| Cut-off Voltage | 2.75V (min) |
| Dimensions | 18mm diameter x 65mm length (standard 18650) |
| Chemistry | Lithium-Ion |
| Cycle Life | 500+ charge/discharge cycles |
| Max Continuous Discharge | ~1C (2A typical) |
| Weight | ~45g per cell |
| Internal Resistance | <=80mOhm |
| Operating Temperature | -20 degreesC to +60 degreesC |
| Origin | Original / Authentic |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- Standard 18650 Form Factor: Universally compatible with 18650 battery holders, chargers, and enclosures used across thousands of devices and projects.
- 2000mAh Capacity: Provides substantial energy storage - enough to power an LED flashlight for hours or run a microcontroller-based project for extended periods.
- Stable 3.7V Output: Consistent nominal voltage ideal for directly powering 3.3V circuits (with LDO regulator) or 5V circuits (with boost converter).
- 500+ Cycle Lifespan: Retains at least 80% capacity after 500 full charge/discharge cycles, making it cost-effective for long-term use.
- Low Self-Discharge: Retains charge during storage - ready to use even after weeks of sitting idle.
- Lightweight & Compact: At roughly 45 grams, offers one of the best energy-to-weight ratios among rechargeable battery types.
- Wide Temperature Range: Operates reliably from -20 degreesC to +60 degreesC, suitable for both indoor electronics and outdoor field applications.
Why Choose This?
- 100% authentic cells sourced from trusted suppliers - no recycled or re-wrapped batteries
- Tested and verified capacity before dispatch
- 1-5 day shipping, 7-8 day delivery from Bengaluru warehouse across India
- Expert technical support for battery integration and charging circuit design
- Ideal balance of capacity, discharge rate, and cost for most applications
Project Ideas
- DIY Power Bank: Combine 2-4 cells with a TP4056 charging module and 5V boost converter to build a custom portable charger for phones and tablets.
- Solar Energy Storage: Pair with a solar panel and charge controller to create a small off-grid energy system for sensors, lights, or IoT devices.
- Robotics & RC Projects: Power Arduino, ESP32, or Raspberry Pi-based robots with a compact, rechargeable energy source that's easy to swap.
- Portable LED Flashlight: Build a high-brightness tactical flashlight - the 18650 is the standard cell used in most professional-grade torches.
- IoT & Remote Sensors: Deploy battery-powered environmental monitoring stations, weather sensors, or GPS trackers in remote locations.
- Battery Pack Assembly: Connect multiple cells in series or parallel to create custom battery packs (e.g., 7.4V, 11.1V, or higher capacity configurations) for drones, e-bikes, or UPS systems.
- Learning & Education: Understand lithium-ion chemistry, charging profiles, BMS (Battery Management System) design, and energy calculations hands-on.
Important Usage & Safety Notes
- Always use a proper Li-Ion charger (TP4056 recommended) - do NOT charge above 4.2V
- Do not discharge below 2.75V to prevent permanent cell damage
- Use a BMS (Battery Management System) when connecting multiple cells in series or parallel
- Avoid short-circuiting terminals - Li-Ion cells can deliver high current and may overheat
- Do not puncture, crush, or expose to fire
- Store in a cool, dry place at approximately 3.7V-3.8V for long-term storage
- Use appropriate 18650 battery holders for secure mechanical and electrical connections
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Buy 3.7v 2000mah 18650 Li-Ion Battery Online in India
Purchase the 3.7v 2000mah 18650 Li-Ion Battery online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on 3.7v 2000mah 18650 Li-Ion Battery with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy 3.7v 2000mah 18650 Li-Ion Battery at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.