3.7V 280mAh LP402040 Battery
Short Description:
With 20 Years of Experience, Pkcell has become a leading Li-ion Battery Pack manufacturer, specializing in producing the LiPo battery.
Nominal Voltage: 3.7V
Size: 4.0*20*40 mm
Operating Temperature: -20 ~60°C
Max Constant Charging Current (0.5C): 140mA
Max Continuous Discharging Current (0.5C): 140mA
Cycle Life@23°C@0.2C: 300+
Self Discharge Rate: ≤3%/Month@25°C
Recommend Storage Temperature: 0~30 °C
Applications: Security cameras, environmental monitoring sensors, IOT devices, scientific research instruments, GPS devices
Certification
Certified By IEC, CE, MSDS, and More, Ensuring Top-Notch Quality and Safety.
Polymer cells are tailor made dimensions based on customer's design , we have only listed part of the models below for your kind reference.
Please contact us for more details regarding your specified project .
Lithum-ion Polymer/ LiPo Batteries/Pouch Cell
Features
1.Intelligent Battery Pack Design
2.Environmental Friendly Chemistry,Pollution-free;non-polluting
3.High Energy Density,High Power Density
4.No fire, No explosion, No leakage
5.Wholly closed dust-free workshops,securing high quality
6.Excellent Cycle Life,chargeable up to 500 or 1000 times
Application Scenario
Empower Your Innovation: 3.7V 280mAh LP402040 Ultra-Thin LiPo
Weighing only a few grams and measuring just 4.0mm x 20mm x 40mm, it is the perfect fit for devices that must remain light and unobtrusive on the user’s body or in their pocket. Operating flawlessly from -20°C to 60°C, this battery ensures that your portable tech remains functional whether it’s used for outdoor sports or in controlled indoor environments. With 500+ recharge cycles and an exceptionally low self-discharge rate, the LP402040 guarantees that your product is always ready for use, even after weeks on the shelf.
Typical Applications:
| Sector | Target Applications |
| Wearable Tech | Smart rings, fitness trackers, and Bluetooth headsets. |
| Micro-Electronics | Miniaturized remote controls and LED smart lighting. |
| Audio Devices | True Wireless Stereo (TWS) earbuds and portable amplifiers. |
| Smart Apparel | Integrated biometric sensors and heated clothing elements. |
LP402040 for fleet management GPS trackers
The 3.7V 280mAh LP402040 is an ideal backup power source for fleet management GPS trackers due to its ultra-slim 4mm profile, allowing it to fit into the discreet, tamper-resistant housings required for covert vehicle installation. Its specialized wide-temperature resilience (-20°C to 60°C) ensures the tracker remains operational even when vehicles are parked in extreme outdoor heat or freezing winter conditions. Furthermore, its reliable 500+ cycle life provides the long-term durability necessary for constant standby use, ensuring critical location data is transmitted even if the vehicle's primary power is disconnected.
Why Choose Pkcell Battery?
FAQ
- Lead Time: Standard samples typically arrive in 20-25 days. Formal orders usually take around 20-25 days
- Payment Methods: We accept various payment types, including T/T (Telegraphic Transfer), L/C (Letter of Credit), and PayPal.
- Shipping: We offer flexibility! Depending on your needs and location, we can ship your order via air freight (using carriers like FEDEX, DHL, UPS, EMS, etc.) or via sea freight.
- Delivery Terms: We can work with several common international shipping terms, including EXW, FCA, FOB, CFR, and DDU.
We have a minimum order value of USD $500. The actual quantity you receive depends on the unit price of the specific batteries you choose. Absolutely! We understand you need to test our products. We're happy to provide samples for your evaluation before you place a formal order.
Yes, absolutely. We can design and build battery packs tailored for challenging conditions. We offer solutions using 18650 cells rated for wide operating temperatures (e.g., discharge from -40℃ up to +85℃ discharge with specific cell types), and our pack designs can incorporate features for waterproofing, shock resistance, and intrinsic safety (explosion protection) as required by your application.
Yes, we can facilitate and provide these certification services for your battery packs. The typical estimated lead times are:
- UN38.3: Approx. 2 weeks
- CE: Approx. 1 week
- UL: Approx. 5 weeks(Please note these are estimates and can vary based on testing queues and specific requirements.)
Yes, BMS customization is one of our key services. We can design or modify the BMS functionality, communication protocols (like SMBus, CANbus, etc.), and protection parameters to precisely match the unique requirements of your application and ensure optimal performance and safety for your custom battery pack.
An 18650 battery pack combines multiple individual 18650 lithium-ion cells (18mm x 65mm) wired together to achieve higher voltage, capacity, or both. Cells are connected in series (S) for voltage increase, parallel (P) for capacity increase, or a combination (e.g., 3S2P).
The lifespan of an 18650 battery pack depends on its quality, chemistry, usage (charge/discharge cycles, depth of discharge), and operating conditions. With a good BMS and proper care, a pack can last hundreds to over a thousand cycles, potentially 3-5 years or more, before significant capacity degradation. Avoiding full discharge and extreme temperatures extends its life.
For long-term storage, charge the 18650 battery pack to its "storage voltage" (typically 3.7V to 3.85V per cell), not full or empty. Store it in a cool, dry place, away from direct sunlight, extreme temperatures, and flammable materials. Avoid storing fully charged or fully discharged for extended periods, as this can degrade the cells.
