401120 3.7V 50mAh Li Polymer Rechargeable Battery for Smart Wearable Devices

This UL certified li polymer battery delivers stable 3.7V power for compact smart gadgets. As a reliable lithium ion battery cell, this 3.7v wearable device battery fits tiny electronics with limited inner space, supporting consistent daily operation for small smart hardware.

• Stable 3.7V Output for Mini Smart Hardware: Consistent voltage avoids sudden power drops that crash your small smart devices. This 3.7v wearable device battery keeps your compact electronics running smoothly during daily use.
• 500-Cycle Long Service Life: The li polymer battery maintains steady capacity over repeated charge cycles. It lowers your replacement frequency and cuts long-term operating costs for your finished products.
• Customizable Size, Capacity & Connector: We adjust specs, capacity and JST/Molex connectors to match your device PCB design. No extra modification work needed for your product assembly line.
• UL Certified Safe Lithium Ion Battery Cell: Strict production control meets UL standards. It reduces safety risks for end users and helps your finished goods pass market compliance checks.
• Sample Testing & Flexible Lead Time: You can request samples for pre-production verification. Stock items ship in 3-7 days; custom orders finish within 2–3 weeks.
• International Standard Export Packaging: Industrial carton packaging fits air and sea shipping rules, protecting cells from damage during cross-border transit.

This compact li polymer battery works well for a wide range of portable electronics and smart gadgets. It fits dash cameras, GPS navigators, smart home units, massagers, digital cameras, sprayers, dental rinsers, smart bracelets, blackhead removers, remote controls, smart watches, electric toy blasters, electric air pumps, smart trash cans, Bluetooth speakers, fingerprint locks, electric hair clippers, dog trainers, pest repellers, camping lights, robot vacuums, electric toothbrushes, pet water fountains, electric shavers, handheld mini fans and other compact smart products. Suitable for daily commuting, home use, camping and outdoor portable equipment.

We are a professional manufacturer for this li polymer battery. All cells go through strict pre-shipment inspection before delivery. We support sample validation to help you confirm performance before bulk purchase. If quality issues arise from our production defects, we offer coordinated solutions for replacements. Our sales team provides responsive technical support for specification matching and shipping queries. Every batch follows international battery shipping standards to reduce transit risk for your 3.7v wearable device battery orders.