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Battery Pack (3-cell & 4-cell Combinations) Product Introduction. Custom Lithium Ion Battery Pack (3-cell & 4-cell Combinations) | B2B Product Introduction Page Title (SEO Optimized) Custom 3S/4S 18650 Lithium Battery Packs, Various Arrangement Configurations, OEM Wire & Terminals Customization Banner Headline Multiple Layout Options for 3-Cell & 4-Cell Lithium Battery Assemblies | Custom Wires, Terminals & Connectors Available 1. 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https://img.fywpower.com/photo/pl222434872-8017120_3_7v_1600mah_lithium_polymer_battery_for_induction_lamp.jpg https://img.fywpower.com/photo/pl222434871-8017120_3_7v_1600mah_lithium_polymer_battery_for_induction_lamp.jpg https://img.fywpower.com/photo/pl222434874-8017120_3_7v_1600mah_lithium_polymer_battery_for_induction_lamp.jpg https://img.fywpower.com/photo/pl222434875-8017120_3_7v_1600mah_lithium_polymer_battery_for_induction_lamp.jpg https://img.fywpower.com/photo/pl222434876-8017120_3_7v_1600mah_lithium_polymer_battery_for_induction_lamp.jpg https://img.fywpower.com/photo/pl222434877-8017120_3_7v_1600mah_lithium_polymer_battery_for_induction_lamp.jpg https://img.fywpower.com/photo/fywpower/video/stop-sensor-light-battery-failure-513657.jpg 8017120 3.7V 1600mAh Lithium Polymer Battery for Induction Lamp. 8017120 3.7V 1600mAh Lithium Polymer Battery for Induction Lamp Product Overview The 8017120 3.7V 1600mAh lithium polymer battery is a customized rechargeable pouch cell specially developed for human body induction lamps, infrared sensor lights, LED smart induction lighting and other low-power intelligent lighting equipment. 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