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Witty Fox 3.7V 4000mAh Li-Ion Battery
Power your portable projects with confidence using the Witty Fox 3.7V 4000mAh Li-Ion Battery. This high-capacity rechargeable lithium-ion cell delivers reliable, long-lasting energy for IoT devices, GPS trackers, handheld instruments, robotics, and custom electronics. With built-in protection circuitry and a generous 4000mAh capacity, it's the ideal choice for applications demanding extended runtime in a compact, lightweight form factor. Available from The Engineer Store, Bengaluru, with fast shipping and full technical support.
Specifications
| Brand | Witty Fox |
| Battery Chemistry | Lithium-Ion (Li-Ion) |
| Nominal Voltage | 3.7V |
| Capacity | 4000mAh (14.8Wh) |
| Charge Voltage | 4.2V (max) |
| Discharge Cut-off Voltage | 2.75V (typical) |
| Protection Circuit | Built-in (overcharge, over-discharge, short-circuit) |
| Cycle Life | 500+ charge/discharge cycles |
| Connector | JST PH 2.0mm 2-pin (standard) |
| Cell Configuration | Single cell (1S) |
| Operating Temperature | -20 degreesC to 60 degreesC |
| Storage Temperature | -20 degreesC to 45 degreesC (recommended at ~3.8V) |
| Weight | Approximately 70-80g |
| Origin | Original / Authentic Witty Fox Product |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- High Capacity 4000mAh: Delivers extended runtime for power-hungry portable projects, reducing the frequency of recharging and enabling longer field deployments.
- Stable 3.7V Nominal Output: Provides consistent voltage throughout the discharge cycle, ensuring predictable performance for microcontrollers, sensors, and communication modules.
- Integrated Protection Circuit Module (PCM): Safeguards against overcharging beyond 4.2V, deep discharge below safe thresholds, short circuits, and overcurrent conditions - protecting both the battery and your connected electronics.
- 500+ Cycle Lifespan: Engineered for durability and repeated use, maintaining at least 80% of original capacity after 500 full charge-discharge cycles.
- Compact & Lightweight Design: Optimized energy density packs 4000mAh into a slim pouch or prismatic cell format, fitting easily into enclosures, handheld devices, and custom housings.
- Wide Operating Temperature Range: Functions reliably from -20 degreesC to 60 degreesC, making it suitable for outdoor deployments, weather stations, and field instrumentation.
- Standard JST Connector: Comes with a JST PH 2.0mm 2-pin connector for plug-and-play compatibility with popular development boards, charging modules, and battery management systems.
- Trusted Witty Fox Quality: A well-regarded brand in the Indian maker and electronics community, known for consistent cell quality and accurate capacity ratings.
Why Choose the Witty Fox 4000mAh Battery?
- 100% Authentic: Sourced directly from Witty Fox through authorized distribution channels. Every battery is verified for genuine capacity and quality - no relabeled or counterfeit cells.
- True Rated Capacity: Unlike many budget Li-Ion cells on the market that overstate their mAh ratings, Witty Fox batteries deliver honest, tested capacity you can rely on for your designs.
- Safety First: The onboard protection circuit eliminates common lithium battery hazards, giving you peace of mind during prototyping, testing, and final deployment.
- Maker-Friendly: Designed with hobbyists, students, and engineers in mind - the standard connector and well-documented specs make integration straightforward.
- Fast Shipping from Bengaluru: Ships from The Engineer Store warehouse in Bengaluru. 1-5 day shipping, 7-8 day delivery across most of India; same-day delivery available within Bengaluru.
- Expert Technical Support: Our team can help you select the right charging IC, design battery management circuits, and troubleshoot power-related issues in your projects.
Compatible Charging Solutions
- TP4056 Module: The most popular single-cell Li-Ion charger module. Use the 1A version for safe charging (full charge in approximately 4-5 hours). Micro-USB or USB-C input variants available.
- MCP73831 Based Chargers: Compact IC-based charging solutions ideal for PCB-integrated designs with adjustable charge current.
- Solar Charging Boards: Pair with solar panels (5V-6V) and a solar charge controller for off-grid and remote sensing
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 Witty Fox 3.7V 4000mAh Li-Ion Battery Online in India
Purchase the Witty Fox 3.7V 4000mAh 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 Witty Fox 3.7V 4000mAh 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 Witty Fox 3.7V 4000mAh 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.
Witty Fox 3.7V 4000mAh Li-Ion Battery
Power your portable projects with confidence using the Witty Fox 3.7V 4000mAh Li-Ion Battery. This high-capacity rechargeable lithium-ion cell delivers reliable, long-lasting energy for IoT devices, GPS trackers, handheld instruments, robotics, and custom electronics. With built-in protection circuitry and a generous 4000mAh capacity, it's the ideal choice for applications demanding extended runtime in a compact, lightweight form factor. Available from The Engineer Store, Bengaluru, with fast shipping and full technical support.
Specifications
| Brand | Witty Fox |
| Battery Chemistry | Lithium-Ion (Li-Ion) |
| Nominal Voltage | 3.7V |
| Capacity | 4000mAh (14.8Wh) |
| Charge Voltage | 4.2V (max) |
| Discharge Cut-off Voltage | 2.75V (typical) |
| Protection Circuit | Built-in (overcharge, over-discharge, short-circuit) |
| Cycle Life | 500+ charge/discharge cycles |
| Connector | JST PH 2.0mm 2-pin (standard) |
| Cell Configuration | Single cell (1S) |
| Operating Temperature | -20 degreesC to 60 degreesC |
| Storage Temperature | -20 degreesC to 45 degreesC (recommended at ~3.8V) |
| Weight | Approximately 70-80g |
| Origin | Original / Authentic Witty Fox Product |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
Key Features
- High Capacity 4000mAh: Delivers extended runtime for power-hungry portable projects, reducing the frequency of recharging and enabling longer field deployments.
- Stable 3.7V Nominal Output: Provides consistent voltage throughout the discharge cycle, ensuring predictable performance for microcontrollers, sensors, and communication modules.
- Integrated Protection Circuit Module (PCM): Safeguards against overcharging beyond 4.2V, deep discharge below safe thresholds, short circuits, and overcurrent conditions - protecting both the battery and your connected electronics.
- 500+ Cycle Lifespan: Engineered for durability and repeated use, maintaining at least 80% of original capacity after 500 full charge-discharge cycles.
- Compact & Lightweight Design: Optimized energy density packs 4000mAh into a slim pouch or prismatic cell format, fitting easily into enclosures, handheld devices, and custom housings.
- Wide Operating Temperature Range: Functions reliably from -20 degreesC to 60 degreesC, making it suitable for outdoor deployments, weather stations, and field instrumentation.
- Standard JST Connector: Comes with a JST PH 2.0mm 2-pin connector for plug-and-play compatibility with popular development boards, charging modules, and battery management systems.
- Trusted Witty Fox Quality: A well-regarded brand in the Indian maker and electronics community, known for consistent cell quality and accurate capacity ratings.
Why Choose the Witty Fox 4000mAh Battery?
- 100% Authentic: Sourced directly from Witty Fox through authorized distribution channels. Every battery is verified for genuine capacity and quality - no relabeled or counterfeit cells.
- True Rated Capacity: Unlike many budget Li-Ion cells on the market that overstate their mAh ratings, Witty Fox batteries deliver honest, tested capacity you can rely on for your designs.
- Safety First: The onboard protection circuit eliminates common lithium battery hazards, giving you peace of mind during prototyping, testing, and final deployment.
- Maker-Friendly: Designed with hobbyists, students, and engineers in mind - the standard connector and well-documented specs make integration straightforward.
- Fast Shipping from Bengaluru: Ships from The Engineer Store warehouse in Bengaluru. 1-5 day shipping, 7-8 day delivery across most of India; same-day delivery available within Bengaluru.
- Expert Technical Support: Our team can help you select the right charging IC, design battery management circuits, and troubleshoot power-related issues in your projects.
Compatible Charging Solutions
- TP4056 Module: The most popular single-cell Li-Ion charger module. Use the 1A version for safe charging (full charge in approximately 4-5 hours). Micro-USB or USB-C input variants available.
- MCP73831 Based Chargers: Compact IC-based charging solutions ideal for PCB-integrated designs with adjustable charge current.
- Solar Charging Boards: Pair with solar panels (5V-6V) and a solar charge controller for off-grid and remote sensing
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 Witty Fox 3.7V 4000mAh Li-Ion Battery Online in India
Purchase the Witty Fox 3.7V 4000mAh 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 Witty Fox 3.7V 4000mAh 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 Witty Fox 3.7V 4000mAh 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.