How Does the 402050 Polymer Lithium Battery Work in Small Devices?
The 402050 polymer lithium battery (400mAh, 3.7V) is designed for low-power, compact electronics like Bluetooth speakers and smart toys. Its slim profile (4.0mm thick) and lightweight design optimize space efficiency, while the lithium-polymer chemistry ensures stable energy output. With a 400mAh capacity, it balances runtime and size, making it ideal for intermittent-use devices requiring frequent recharging cycles.
What Are the Key Specifications of the 402050 Battery?
| Specification | Detail |
|---|---|
| Nominal Voltage | 3.7V |
| Capacity | 400mAh |
| Dimensions | 40mm x 20mm x 5.0mm |
| Charge Cycles | Up to 500 |
| Self-Discharge Rate | ≤3% per month |
Why Choose Lithium-Polymer Over Other Battery Types?
Lithium-polymer batteries offer higher energy density, flexibility in design, and lower risk of leakage compared to lithium-ion or NiMH alternatives. The 402050’s polymer electrolyte enhances safety by reducing thermal runaway risks. For small devices, this means longer runtime, lighter weight, and adaptability to irregular shapes—critical for modern electronics like curved wearables or ultra-thin speakers.
Recent advancements in polymer chemistry have further improved discharge rates, allowing the 402050 to maintain consistent voltage even under high loads. This is particularly beneficial for devices like wireless earbuds, where sudden power surges during audio playback could destabilize lesser batteries. Additionally, the absence of rigid casing reduces the risk of internal damage from vibrations, a common issue in automotive accessories or fitness trackers. Manufacturers also appreciate the reduced assembly complexity, as these batteries can be adhered directly to device chassis without bulky mounting hardware.
How Does the 402050 Impact Environmental Sustainability?
The battery’s 500-cycle lifespan reduces waste compared to disposable alternatives. EVE Battery uses RoHS-compliant materials, minimizing heavy metals. Recycling programs recover 95% of lithium and copper. However, improper disposal risks soil contamination—always use certified e-waste channels. Newer variants integrate biodegradable separators, cutting landfill impact by 30%.
Innovations in closed-loop manufacturing further enhance sustainability. For instance, EVE Battery’s Chengdu facility now recovers cobalt from production scrap to create new cathodes, reducing virgin material use by 18%. The 402050’s modular design also allows easy replacement of degraded cells in multi-battery systems, extending the lifespan of entire devices. A 2023 study by the Green Electronics Council showed that switching 10 million devices to this battery model could prevent 2,400 tons of annual e-waste. Future iterations aim to incorporate plant-based electrolytes, which preliminary tests suggest could decompose safely in landfills within 5-7 years under specific conditions.
“Demand for polymer cells like the 402050 surged 40% in 2023, driven by IoT and wearable tech,” says Dr. Lin Wei, EVE Battery’s R&D lead. “We’re enhancing cycle life to 800 charges via silicon-doped anodes. A major challenge remains balancing energy density with fast-charging—our 2024 prototypes achieve 80% charge in 12 minutes without compromising safety.”
FAQs
- Q: Can the 402050 battery power a device overnight?
- A: Yes, for low-drain devices like LED lights (5mA draw), it provides 80+ hours. High-drain gadgets like speakers (100mA) last ~4 hours.
- Q: Is it safe to use in extreme cold?
- A: Operable down to -20°C, but capacity drops 25% at -10°C. Use insulated casing in freezing environments.
- Q: How to check battery health?
- A: Measure voltage under load: <3.2V at 100mA indicates <80% health. Replacement is advised.