3.7V 602030 300mAh Lithium Ion Polymer Battery with PCB
Summary of 602030 Battery 300mAh
The 3.7V 602030 300mAh Lithium Ion Polymer Battery with PCB combines green energy technology, lightweight design, and reliable power performance in one compact unit. Weighing only 9 grams (with protection board), this environmentally friendly Li-Polymer battery contains no harmful heavy metals like lead, mercury, or cadmium — fully meeting modern electronics’ eco-compliance standards. Its moderate 300mAh capacity delivers lasting runtime for small devices, while the built-in protection circuit (PCB) ensures safety with overcharge, over-discharge, overcurrent, short circuit, and temperature protections. With a cycle life over 500 deep cycles, self-discharge ≤1% per month, and strong design flexibility, this battery is perfect for compact consumer and IoT devices seeking lightweight and sustainable power.
Lithium Polymer 602030 Battery Technical Information
Model: 602030
Battery Type: Rechargeable Li-Polymer Battery
Nominal Capacity: 300mAh
Nominal Voltage: 3.7V
Nominal Energy: 1.11Wh
Energy Density: 123Wh/kg
Charge Cut-off Voltage: 4.2V
Discharge Cut-off Voltage: Typically 3.0V, Minimum 2.75V
Standard Charge Current: 0.2C (60mA)
Max Charge Current: 1C (300mA)
Standard Discharge Current: 0.2C (60mA)
Max Continuous Discharge Current: 1C (300mA)
Max Peak Discharge Current: 2C (600mA)
Internal Resistance: Less than 120mΩ
Cycle Life: More Than 500 Times
Dimensions: 6 × 20 × 30 mm
Weight: 9g
Charge Temperature Range: 0°C to 45°C
Discharge Temperature Range: -20°C to 65°C
Storage Temperature Range:
- -20℃~25℃: More than 12 months
- -20℃~45℃: Less than 3 months
- -20℃~60 ℃: Less than 1 month
PCB: Yes
Key Features — 602030 3.7 V 300mAh
🌿 Eco-Friendly & Sustainable Energy Choice
Designed for a greener future, the 602030 Lithium Ion Polymer Battery is manufactured without toxic materials. This makes it a responsible power source for environmentally conscious device manufacturers.
No lead, mercury, or cadmium — 100% compliant with RoHS and environmental standards.
Eco-friendly polymer electrolyte reduces chemical leakage and pollution risks.
Fully recyclable and designed for sustainable electronic applications.
⚡ Compact, Lightweight, and Space-Saving Design
Despite its slim 6mm thickness, the 602030 Li-Polymer battery provides efficient energy output in an ultra-compact form: Its lightweight and small size make it ideal for space-constrained electronic devices, such as wearable tech, mini sensors, Bluetooth gadgets, and portable medical tools.
🛡️ High Safety with Built-in PCB Protection
Safety is a key advantage of this battery. The integrated protection circuit board (PCB) offers multiple layers of protection. Combined with its stable polymer electrolyte, the risk of leakage, swelling, or combustion is minimized, ensuring safe, long-term operation.
✅ Overcharge protection
✅ Over-discharge protection
✅ Overcurrent protection
✅ Short circuit protection
✅ Over-temperature protection
🔁 Long Cycle Life & Ultra-Low Self-Discharge
Engineered for endurance, the 602030 Li-Polymer battery offers:
🔋 500+ deep charge/discharge cycles while retaining ≥240mAh (80%) capacity
🌀 Monthly self-discharge rate ≤1% for longer shelf life and consistent performance
💪 Stable voltage curve ensuring smooth energy delivery for sensitive electronics
🧩 Flexible Shape Design & OEM Customization
Polymer batteries offer unmatched design flexibility, and the 602030 model can be customized to perfectly fit your device’s requirements. Cestpower provides tailored battery solutions for your unique industrial, IoT, or consumer product designs.
📐 Adjustable dimensions and thickness
⚡ Custom capacities and voltage options
🔌 Connector and terminal customization
🏷️ OEM/ODM branding and labeling support
💼 Typical Applications
The 3.7V 602030 300mAh Li-Polymer Battery with PCB is widely used in:
Smart wearable devices
Wireless sensors and IoT modules
Portable medical electronics
GPS trackers and mini cameras
Bluetooth devices and beacons
❓ FAQ – Frequently Asked Questions
Q1: How long does the battery last?
A: After 500 deep charge/discharge cycles, it retains over 240mAh capacity (80%), ensuring long-term reliability.
Q2: What’s the self-discharge rate?
A: The battery’s self-discharge rate is ≤1% per month, allowing excellent standby performance.
Q3: What charging conditions are recommended?
A: Charge using a 4.2V CC/CV charger, within a temperature range of 0°C–45°C, to maximize battery lifespan and safety.
Q4: What certifications are available?
A: The 602030 battery can be supplied with UN38.3, MSDS, RoHS, and CE certifications, suitable for international compliance and transportation.
Q5: Is the polymer battery safer than cylindrical lithium-ion batteries?
A: Yes. The polymer electrolyte reduces leakage risk, improves stability, and allows more flexible shapes and thinner profiles for modern devices.
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