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18650 Battery 3.7V 2500mAh Li-ion (Rechargeable) - Robocraze
3.7v 2500mah 18650 Li-Ion Battery
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3.7v 2500mah 18650 Li-Ion Battery
3.7v 2500mah 18650 Li-Ion Battery
3.7v 2500mah 18650 Li-Ion Battery
18650 battery is a Li-ion rechargeable battery with a 2500 mAh Battery Capacity. This is not a standard AA or AAA battery but is very useful for applications that require continuous high current or high current in short bursts like in cameras, DVD players, iPod, etc. This 3.7V 2500mAh 18650 lithium ion battery is safe to use, environment friendly and has long battery life. 18650 battery comes with high energy density and provides excellent continuous power sources to your device. It should be used with a protection circuit board that guards the battery against overcharge, over-discharge of the pack, and to avoid over-current draw. This product is compatible with 18650 lithium battery Power Mobile Bank .
You can use this battery with development boards like arduino , BBC Micro:Bit and M5 Stack Development Kits
It is very easy to use the cell in any circuit, just solder the wires on the terminals or use 18650 battery holders to easily replace the used cells. Care must be taken while handling Li-ion batteries as they are volatile and inflammable and should not be handled roughly and punctured. Also, don’t overcharge and discharge beyond a certain point as gasses accumulated inside might result in explosions and fire. So always use the Protection board while using Li-Ion cells
Note: We do not recommend using this product for critical applications. The capacity and performance of the cell might vary based on charging and discharging parameters. Please note that we do NOT provide any guarantee/warranty on this product.
Best Price for 3.7V 2500mAh 18650 Li Ion Battery Online
If you're planning your next electronics or IoT project and need a reliable power source, the 3.7V 2500mAh 18650 Li-Ion Battery is available at Robocraze at prices starting from ₹69. The final price may vary based on ongoing offers, brand availability, and stock updates, ensuring you always get competitive value. Unlike low-grade cells commonly available in the market, our batteries are sourced for stable discharge performance, consistent capacity output, and longer cycle life. Whether you're powering Arduino projects, Raspberry Pi setups, robotics builds, or DIY energy storage applications, Robocraze ensures better quality control and dependable performance compared to many generic alternatives available online.
Application:
- Can be used in Cordless Phones
- Can be used with Tablet, PC, GPS, iPod, DVD, MP4 Player, IoT etc.
- Mobiles backup power supply/Power bank
Learn More About Li-Ion Safety & Usage" callout to build trust and reduce support queries:
- 18650 Lithium-ion Batteries: A Comprehensive Guide
- All About Battery Management Systems (Essential for explaining BMS protection against overcharging/flammability)
- Introduction to Lithium Ion Batteries and its Applications
3.7V 2500mAh 18650 Li Ion Battery Specifications Comparison:
| Parameter | 3.7V 2500mAh 18650 Li-Ion Battery (Robocraze) | Generic Low-Grade 18650 Cell |
|---|---|---|
| Nominal Voltage | 3.7V | 3.7V |
| Capacity | 2500mAh (Rated Capacity) | Often Exaggerated (3000–5000mAh Claims) |
| Battery Type | Rechargeable Lithium-Ion | Unverified Lithium-Ion |
| Discharge Performance | Stable and Consistent Output | Inconsistent Voltage Drop |
| Recharge Cycles | Approx. 300–500 Cycles | Uncertain / Not Specified |
| Protection Circuit | Variant-Based (Check Product Type) | Usually Not Included |
| Application Suitability | Robotics, IoT, DIY Electronics | Limited Reliability for Projects |
| Quality Assurance | Verified & Quality Checked | Not Guaranteed |
18650 Capacities Compared (1200 to 2600mAh)
When evaluating the 18650 cell versus performance, the 2500mAh variant is the industry sweet spot. Lower capacity cells (1200–1800mAh) are cheaper but require frequent recharging, while fake 3000mAh+ cells often exaggerate their specs. This genuine 18650 2500mah cell provides the optimal balance of runtime, stable discharge rate, and value for robotics, IoT, and DIY power banks.
How to Charge Safely (TP4056)
Never charge a bare 3.7v li-ion battery directly from a raw power source. Always use a dedicated charging module like the TP4056 with built-in protection. Charge at a standard rate (0.5C to 1C, e.g., 1A to 2.5A for this 2500mAh cell) and ensure the charger cuts off at 4.2V to prevent overheating and maximize the battery's lifespan.
Battery Holders and BMS
For safe integration, pair this cell with a quality battery holder for easy swaps without soldering. More importantly, always integrate a BMS (Battery Management System) or protection circuit board. A BMS guards against overcharge, over-discharge, and short circuits, which is critical since Li-ion cells are volatile if punctured or mishandled.
Package Includes:
- 1 x 3.7v 2500mah 18650 Li-Ion Battery
Specifications:
| Voltage | 3.7V |
| Battery Capacity | 2500 mAh |
| Battery Type | Lithium-Ion |
| Charging method | CC-CV |
|
Rechargeable |
Yes |
| Battery Dimension (Height x Diameter) |
65 x 18mm |
| Connector Dimension (L x W x H) |
9 x 7 x 5 mm |
| Weight | 100 grams |
What is an 18650 Battery?
An 18650 battery is a cell that's 18mm x 65mm in size. The name, 18650, refers exclusively to the size of the lithium-ion battery cell, but there can be minor variations even here.They offer the performance of a lithium-ion cell, a capacity in the range of 1800mAh to around 3500mAh, and an output of 3.7 volts. They're used in a huge range of devices from laptops to laser pointers, and camera accessories like gimbals and sliders.
How to connect 18650 Li-Ion Battery?
It is very easy to use the cell in any circuit just solder the wires on the terminals or use 18650 battery holders to easily replace the used cells
What are the precautions to be taken while working with Li-Ion batteries?
Care must be taken while handling Li-ion batteries as they are volatile and inflammable and should not be handled roughly and punctured. Also, don’t overcharge and discharge beyond a certain point as gases accumulated inside might result in explosions and fire. So always use the Protection board while using Li-Ion cells.
How long does it take to charge a 18650 battery?
The amount of time that a battery takes to charge can vary depending on the brand of battery and the capacity of the battery. The capacity of a 18650 battery is determined by something called the milliamp level, which can be abbreviated as mAh. The milliamp level of 18650 batteries typically ranges from around 2300 mAh to a maximum of 3600 mAh. Since a higher milliamp level indicates a higher capacity and longer run time, this also means that a 3500 mAh 18650 battery will take longer to charge than a 2300 mAh battery. For example, a 2600 mAh 18650 battery may take an estimated 4 hours to charge.
How long do 18650 batteries last?
The amount of time that a 18650 battery can last is dependent on a lot of factors. The amount of time they are used, how often they are recharged, and their general care are all important factors that play into the longevity of your 18650 batteries.The best practice for getting the maximum life from your battery is to use it until it is at about 50% and then recharge it.
How many times can a 18650 battery be recharged?
Most 18650 cells have a cycle life of 300 to 500 cycles. That means your cell can charge to 4.2 volts and discharge to 2.5 - 2.8 volts a maximum of 300 to 500 times without experiencing significant performance loss. When a 18650 cell reaches the end of its useful life, its performance degrades abruptly and rapidly.
Is the 3.7V 2500mAh 18650 Li-Ion Battery Original and Genuine?
Yes, the 3.7V 2500mAh 18650 Li-Ion Battery available at Robocraze is sourced from verified suppliers to ensure authenticity and consistent performance. We prioritize quality testing and proper capacity standards before listing products on our platform. Unlike many unbranded cells sold in the market with exaggerated capacity ratings, our batteries are tested for reliable output, stable voltage levels, and safe charging compatibility, making them suitable for electronics, robotics, and IoT applications.
Is a 2500mAh 18650 battery lithium?
Yes. An 18650 is a cylindrical lithium-ion cell, 18mm wide and 65mm long, with a 3.7V nominal and 4.2V full charge voltage. Charge it only with a Li-ion charger such as a TP4056 module.
Shipping Policy
- Free Delivery on all Orders Above Rs 999/-
- All orders confirmed before 3:00 PM IST are shipped the same day, barring rare pickup delays on holidays or disturbances.
- Delivery time in Metro cities is 1–3 days; for other locations, it is 3–7 days. Delivery varies based on location and courier service.
Return & Refund Policy
- Return window: 7 days from receipt unless stated otherwise.
- No refunds or replacements after the return window.
- Returns are accepted only for non-working or damaged products.
- Initiate return requests via a Support ticket or contact us at +91-8123057137.
- Refunds are processed within 3–4 working days after inspection and approval.
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