651665 3.7V 720mAh LiPo Battery

Product Overview

The 651665 3.7V 720mAh LiPo Battery is a high energy density rechargeable lithium polymer cell based on LCO (Lithium Cobalt Oxide) cathode chemistry — delivering superior volumetric energy density in a compact 6.5×16×65mm form factor. Engineered for personal care electronics and automotive accessories, it provides stable, long-lasting power for dash cameras, electric toothbrushes, shavers, facial cleansing devices, and other precision consumer electronics where maximizing runtime within a constrained enclosure is critical.

Every cell is manufactured with automated electrode coating, precision assembly, and 100% pre-shipment electrical testing — ensuring consistent capacity, tight dimensional tolerances, and safe operation throughout its service life.

Key Features

• ✅ LCO High Energy Density – Cobalt oxide chemistry delivers maximum capacity per unit volume
• ✅ 720mAh True Rated Capacity – 100% tested to guarantee actual output on every unit
• ✅ Slim 6.5mm Profile – Ultra-thin design fits precision personal care and automotive enclosures
• ✅ Stable 3.7V Output – Flat discharge curve for consistent device performance
• ✅ Built-in PCM Protection – Overcharge, over-discharge, overcurrent & short-circuit safeguards
• ✅ 500+ Cycle Life – ≥80% capacity retention after 500 full charge/discharge cycles
• ✅ Low Self-Discharge – ≤3% per month, ideal for intermittent daily-use devices
• ✅ Precision Dimensional Tolerance – ±0.2mm, critical for tight-fit personal care housings
• ✅ 3C & CE & UN38.3 Certified – Meets China CCC, EU, and international transport standards
• ✅ OEM/ODM Ready – Custom dimensions, capacity, connector, PCM & branding available

Specifications

LCO Chemistry Advantage

LCO chemistry is the preferred choice when maximizing capacity within a fixed enclosure volume is the primary design constraint — ideal for slim personal care electronics and compact automotive accessories.

Applications

Quality Assurance

Every cell undergoes a comprehensive multi-stage QC inspection before shipment:

OEM & Custom Battery Solutions

We offer complete customization services tailored for personal care and consumer electronics manufacturers:

• Custom Dimensions – Adjust thickness, width & length to match PCB or mold design exactly
• Capacity Range – 400mAh ~ 1200mAh for similar LCO slim form factors
• Connector & Wiring – JST-PH 1.25, JST-ZH 1.5, Molex 51021, FPC flex connector, bare wire leads
• PCM Options – Ultra-thin PCM (≤1.5mm profile), NTC thermistor, overtemperature protection
• Cell Chemistry Options – LCO (max energy density) / NMC (balanced) / LFP (long life, safety)
• Branding – Private label, logo printing, custom shrink wrap color, retail-ready packaging
• Compliance Support – Assistance with 3C, CE, KC, PSE, UL certification documentation
• MOQ – 200 pcs standard models ｜ 500 pcs full OEM custom cells

Packaging & Shipping

Why Choose Us

• 🏭 12+ years specialized in LCO & Li-Polymer battery manufacturing for consumer electronics
• 🔬 In-house electrode R&D lab — LCO formulation optimized for maximum volumetric density
• 📋 ISO 9001 certified — end-to-end process control from raw material to finished cell
• 🏆 3C certified for China domestic market supply chain compliance
• ✈️ UN38.3 certified — DHL / FedEx / UPS air express to 200+ countries
• 🌍 Trusted supplier to personal care, automotive accessory & consumer electronics brands globally
• 📐 Free DFM review and engineering consultation for battery integration projects
• 💬 Dedicated account manager — engineering response within 4 business hours

💬 Share your device enclosure dimensions, existing battery model, or runtime requirement — our LCO battery specialists will recommend the optimal cell or develop a fully custom solution with quotation within 24 hours.