LP21700B 2S 7.4V 4500mAh 33.3Wh Li-ion Battery

Sleek Columnar Power, Maximize your narrow device’s run-time with the LP21700B 7.4V 4500mAh 2S Li-ion Battery Pack. High capacity meets space-saving cylindrical engineering from LiPol Battery Manufacturer.

Modern electronic engineering frequently confronts the challenge of squeezing high energy reserves into narrow, unconventional internal compartments. The LP21700B addresses this head-on by combining the structural reliability of industrial cells with a highly optimized form factor. As a premier High Capacity with High Voltage Li-ion Battery 21700 configuration, this pack delivers an impressive 4500mAh Li-ion Battery capacity alongside a sustained 7.4V Li-ion Battery operating threshold, totaling 33.3Wh Li-ion Battery of reliable energy.

Constructed by an industry-leading LiPol Battery Manufacturer, the LP21700B fits within your limited Narrow devices, especially used for the long column-type equipment. By configuring premium LP21700 cells into a precise 2S Li-ion Battery series orientation end-to-end, we ensure maximum volumetric efficiency. Backed by complete MSDS and safety certifications, this Cylindrical Li-ion Battery can be securely shipped globally and seamlessly integrated into commercial products.

Precision Dimensions for Columnar Packaging
Because this pack is built lengthwise to accommodate ultra-narrow device architecture, its dimensions mirror the slim constraints of high-capacity LiPo Battery profiles:

Diameter 21mm (21mm Width LiPo Battery): Slender cylindrical width that slides effortlessly into long handles or structural tubes.

Length 140mm (140mm Length LiPo Battery): Optimized inline alignment that leaves maximum radial space for your electronics and structural wiring.

Partner with a Specialized LiPol Battery Manufacturer
Sourcing a dual-cell inline LiPolymer Battery or cylindrical pack requires strict multi-tier safety oversight. Every pack leaving our factory floor features a built-in Protection Circuit Module (PCM) that actively balances charging voltage, prevents over-discharge, and isolates short circuits to guarantee absolute end-user safety.

Need to power a unique column-type device cavity? Contact LiPol Battery Manufacturer team today via our official global portal to explore custom connector options, wire lengths, or to obtain comprehensive structural CAD files for your project blueprint!

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LP21700B 2S 7.4V 4500mAh 33.3Wh Li-ion Battery Specifications

Li-ion Batteries Application

A high-voltage, inline cylindrical layout provides unique architectural advantages over flat Lithium Polymer Battery cells, making it the primary power source for several specialized industries:

Industrial & Pipeline Inspection: Long column-type robotic pipe-crawlers, borehole cameras, and deep subterranean detection tools.

Handheld Medical Instrumentation: Portable surgical tools, motorized diagnostic wands, and high-intensity clinical light handles requiring strict MSDS clearance.

Commercial Smart Hardware: Ruggedized electronic measuring sticks, motorized survey poles, and barcode inventory scanners with specialized wand handles.

High-End Portable Electronics: High-lumen tactical flashlights, specialized hand-held stabilizing gimbals, and high-fidelity field voice amplifiers.

Outdoor & Environmental Telematics: Streamlined wildlife monitoring stakes, linear weather data loggers, and narrow oceanic sensing probes.

Hot Selling Li-ion Batteries

While LiPol is globally recognized as a premier LiPolymer Battery and Li-Polymer Battery factory, our advanced assembly lines handle diverse high-demand cylindrical chemistry arrays to suit rugged field electronics.

LP18650: Size 18mm * 65mm — The most versatile and widely used cell for everything from medical tools to power banks.

LP21700: Size 21mm * 70mm — A modern standard offering higher capacity and discharge rates for high-drain applications.

LP26650: Size 26mm * 65mm — A high-capacity “fat” cell perfect for rugged flashlights and industrial backup systems.

Whether you need a single cell or a 2S1P 4500mAh pack, we provide the documentation and testing reports required for global compliance.

Instock Li-ion Batteries

To accelerate your product’s development loop and prevent manufacturing downtime, we maintain extensive stock levels of high-performance cylindrical cells and custom pre-assembled options ready for immediate wiring modifications:

LP21700B 4500mAh (7.4V): Inline variant, stocked and fully optimized for columnar electronic cavities.

LP18650 2600mAh (3.7V): Highly standardized industrial cells for general-purpose electronics prototyping.

LP18650 3500mAh (7.4V): Pre-configured side-by-side packs with protective PCM architecture built right in.

LP21700 5000mAh (3.7V): Ultra-high-density single cells ready for high-drain tool testing.

LP14500 800mAh (3.7V): AA-sized LiPol Battery form factor cells for ultra-light consumer electronics.