Introduction
602035 400mAh Polymer Lithium Ion Battery delivers stable 3.7V output in a compact 6×20×35mm size, reducing space constraints, capacity mismatch, and voltage instability in small electronic devices.
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Item |
Specifications |
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Charge voltage |
4.2V |
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Nominal voltage |
3.7V |
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Nominal capacity |
400mAh 0.5C Discharge |
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Charge current |
Standard Charging：0.5C Rapid charge：2.0C |
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Discharge current |
Standard discharging：0.5C Rapid discharging：1.0C |
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Standard Charging method |
0.5C CC(constant current)charge to4.2V,then CV(constant voltage 4.2V)charge till charge current decline to ≤0.02C |
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Charging Time |
Standard Charging ：3.5 hours |
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Standard discharge method |
1C CC(constant current)discharge to Min Discharge cut-off voltage(3.3) |
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Operating temperature |
Charging ：0℃~45℃ Discharging ：-20℃~60℃ |
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Storage temperature |
-20℃~ +50℃ |
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Storage humidity |
45~65%RH |
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Dimension |
Length:35±2mm Width:20±0.2mm Thickness:60±0.2mm |
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Drop Test |
The battery to be fully charged with standard charging condition ,then fall from height of 1.0m and hit onto concrete ground 2 times |
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Cycle time |
≥300times ≥300 |
Key Features
Stable Discharge
The battery maintains stable voltage output under 0.5C–1C load, reducing unexpected shutdowns in low-voltage electronic systems.
Reinforced Sealing
Double-layer sealing improves mechanical strength of the pouch structure and reduces electrolyte leakage risk under vibration or pressure.
Low Self-Discharge
Cell chemistry is optimized to reduce voltage drop during storage, improving readiness after long-distance shipping or warehouse storage.
Protection IC Support
Compatible with Seiko or equivalent PCM IC to prevent overcharge, over-discharge, and short circuit at hardware level.
Customization Options
Connectors: JST (PH, XH, SYP), Molex, Hirose, or customized terminals.
Lead Wires: Custom AWG gauge, wire length, and insulation (Teflon/PVC).
Thermal Management: Optional NTC thermistors (10K/100K) for temperature monitoring.
Configuration: Multi-cell packs in Parallel (1S2P) or Series (2S1P) for higher capacity or voltage.
Applications
Personal Care: Electric facial cleansers, smart razors, and scalp massagers.
Smart Wearables: Kids' GPS watches, health monitors, and smart badges.
Wireless Audio: Bluetooth communication headsets and portable voice recorders.
IoT & Security: Asset trackers, smart doorbell modules, and industrial sensors.
Quality Control Process
Every batch follows our strict factory inspection protocol to ensure high assembly yields for our clients:
Material Verification: High-purity cobalt cathode inspection.
Cell Aging: Forced aging periods to identify and remove "self-drainers."
Capacity Grading: 100% automated grading for precise mAh matching.
OCV/IR Testing: Internal resistance and voltage sorting for batch consistency.
Final Inspection: 100% safety and dimensional check before vacuum packaging.
FAQ
Q: What is the minimum order quantity (MOQ)?
A: MOQ depends on customization level, while standard configurations support flexible trial orders for evaluation purposes.
Q: Do you provide samples for testing?
A: Yes, samples are available for engineering evaluation, with typical lead time of 3–10 days depending on specification.
Q: What certifications does this battery support?
A: The product supports UN38.3, MSDS, and IEC62133 compliance depending on target market requirements.
Q: What shipping methods are used for this product?
A: We support air freight, sea freight, and express delivery, with UN38.3-compliant packaging for lithium battery transport safety.
Q: Why is your 602035 battery safer than lower-priced alternatives?
A: Low-cost cells often use recycled materials and nickel-plated steel tabs. We use Grade-A pure cobalt cells and pure nickel tabs, which significantly reduce internal heat and prevent swelling, ensuring a much higher safety margin during fast charging.
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