A new series of long rectangular lithium polymer batteries has been introduced, specifically engineered for compact, narrow-profile electronic devices that require reliable power in space-constrained enclosures. With a nominal 3.7V output, flexible strip-shaped soft pouch cells, and an available capacity range from 500mAh to 5000mAh, this product line offers a versatile power backbone for LED lighting, portable audio, wearables, and handheld instruments.
Designed to replace bulky cylindrical cells such as 18650, the elongated flat pouch structure maximizes internal space utilization while delivering stable continuous discharge performance with minimal heat generation. Each battery incorporates a built-in PCM protection circuit to guard against overcharge, over-discharge, over-current, and short-circuit conditions, significantly enhancing product safety and extending cycle life beyond 500 cycles (with 80% remaining capacity).
Core Technical Specifications at a Glance:
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Nominal Voltage: 3.7V
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Shape: Long rectangular / strip soft pouch lithium polymer
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Capacity Range: 500mAh – 5,000mAh (customizable)
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Internal Structure: Single cell with integrated protection board
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Discharge Performance: Stable continuous output, low heat generation
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Customizable Items: Wire length, connector terminals (JST, PH, XH, etc.), printed labels, blister/carton packaging
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Cycle Life: ≥500 cycles @ 80% capacity retention
Key Advantages for Product Designers and Manufacturers
1. Slim Elongated Strip Design – The long flat pouch architecture fits effortlessly into narrow lamp housings, slim portable gadgets, and wearable devices where traditional round cells cannot be accommodated.
2. Multi-layer Safety Protection – The built-in protection module prevents swelling, overheating, and short-circuit accidents, with cells passing rigorous extrusion, puncture, and overcharge safety tests to meet global export standards.
3. Consistent Cell Performance – Every raw cell undergoes strict capacity sorting, voltage matching, and internal resistance screening before assembly, eliminating voltage imbalance and ensuring uniform performance during long-term standby and cyclic use.
4. Full Customization Service – Thickness, length, width, wire harness length, connector types, brand logo printing, and packaging styles can all be tailored to match specific product development requirements.
5. Export Qualified & Smooth Clearance – All batteries comply with mainstream international electronic product certification standards, with complete test reports and UN38.3 shipping documentation provided for hassle-free sea and air freight.
6. Stable Mass Production Capacity – Automated production lines support both small trial orders and large-volume bulk shipments with controllable lead times and consistent quality.
Wide Application Scenarios
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LED induction lamps, cabinet lights, emergency lighting, portable night lights
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Bluetooth speakers and mini audio players
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Heated wearables, small massage devices, and beauty instruments
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Wireless surveillance cameras and portable backup power banks
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Handheld measuring instruments and smart wearable electronics
B2B Cooperation & Factory Services
The manufacturer offers flexible MOQ options, with small sample trial orders welcome prior to mass production. One-stop OEM and ODM services cover custom dimensions, capacity, wiring, connectors, and packaging, supported by professional technical consultation on battery matching and circuit design. Standard export carton packaging and full shipping documentation ensure efficient logistics and customs clearance for global B2B buyers.
About the Manufacturer
Specializing in custom lithium polymer battery solutions, the company combines rigorous cell screening, precision assembly, and comprehensive safety testing to deliver reliable power systems for the consumer electronics and IoT markets. The new long rectangular series underscores their commitment to innovation, quality, and customer-centric customization.
