Shenzhen Resky Electronics Co., Ltd.
                                                                                                           
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14 Years
Since 2012
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3.7V Lipo Li-ion Battery Pack 805085 4000mAh

Price Negotiable
Price: Negotiable
MOQ: 100pcs
Delivery Time: 7-10days
Brand: RESKY
Product Description
3.7V Lipo Li-ion Battery Pack 805085 4000mAh 
Product Overview

High-performance Lithium Polymer Battery Cell with model number 805085, offering 4000mAh capacity at 3.7V nominal voltage.

Technical Specifications
Parameter Value
Battery Type 3.7V 4000mAh Lipo Battery
Charge Voltage 4.2V
Nominal Voltage 3.7V
Nominal Capacity 4000mAh @ 0.2C Discharge
Charge Current Standard: 0.2C
Rapid: 1.0C
Standard Charging Method 0.5C CC to 4.2V, then CV at 4.2V until current ≤0.05C
Charging Time Standard: 2.75 hours
Rapid: 2 hours
Max Charge Current 0.5C
Max Discharge Current 1.0C
Discharge Cut-off Voltage 2.5V±0.25V (0.2C)
Operating Temperature Charging: 0°C to 45°C
Discharging: 0°C to 45°C
Storage Temperature -10°C to +45°C
Dimensions (L×W×T) 85±0.5mm × 50±0.5mm × 8±0.2mm (excluding tabs)
Drop Test 1 meter drop onto concrete twice - no fire, no leakage
Cycle Life ≥800 cycles
Cathode Materials
1. Lithium Cobalt Oxide (LiCoO₂)
  • High energy density (150-200 Wh/kg) ideal for portable electronics
  • Excellent electrical conductivity for efficient charge/discharge
  • Requires careful thermal management due to safety considerations
2. Lithium Manganese Oxide (LiMn₂O₄)
  • Enhanced safety profile with better thermal stability
  • Cost-effective alternative with moderate energy density (100-130 Wh/kg)
  • Excellent for high-power applications requiring rapid cycling
3. Lithium Iron Phosphate (LiFePO₄)
  • Exceptional thermal stability and safety characteristics
  • Extended cycle life (2000-3000 cycles) for long-term reliability
  • Consistent voltage output with moderate energy density (90-140 Wh/kg)
Product Images
3.7V Lipo Battery 805085 front view 3.7V Lipo Battery 805085 side view 3.7V Lipo Battery 805085 with measurement 3.7V Lipo Battery 805085 technical details 3.7V Lipo Battery 805085 packaging

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Shenzhen Resky Electronics Co., Ltd.
Location Room 1405-1, Building 3B, Huaqiang Idea Park, Guangming Street, Guangming District, Shenzhen, Guangdong Province,China
Contact Person Alice

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