• Polymer lithium battery
  • Polymer lithium battery
  • Polymer lithium battery
  • Polymer lithium battery
  • Polymer lithium battery
  • Polymer lithium battery
  • Polymer lithium battery
Polymer lithium battery
Polymer lithium battery (Li ‑ Po) is a soft package, gel/solid electrolyte lithium ion battery, which belongs to the high-end form of lithium battery.

Product Overview

Polymer lithium battery (Li ‑ Po) is a soft package, gel/solid electrolyte lithium ion battery, which belongs to the high-end form of lithium battery.


Product Details & Specifications

1、 Core principles and structure

Positive electrode: lithium cobalt oxide/ternary/lithium manganese oxide; Negative electrode: graphite; Electrolyte: gel polymer (mainstream) or solid polymer, non liquid.

Encapsulation: Aluminum plastic soft film (non steel/aluminum shell), can be as thin as 0.5-1mm, can be bent and customized in different shapes.

Principle: Consistent with ordinary lithium batteries, it relies on lithium ion insertion/extraction for charging and discharging.

2、 Core advantages (compared to liquid lithium batteries)

Ultra thin+shape freedom: can be made into thin sheets, arcs, and irregular shapes, suitable for compact/curved designs.

Higher safety: less prone to liquid leakage; After damage, it only bulges/burns slowly, with low risk of explosion.

High energy density: The volumetric energy density is about 200-700 Wh/L, with a larger capacity for the same volume.

Lightweight: Soft film is 10-20% lighter than metal shell.

Low internal resistance, high rate: Strong discharge capability, suitable for short-term high-power equipment.

3、 Main shortcomings

Higher cost: The process is complex and 15-30% more expensive than liquid lithium batteries of the same capacity.

Short cycle life: about 300-500 times (lower than lithium iron phosphate).

Sensitive and vulnerable: Overcharging/overdischarging/puncturing/squeezing can cause bulging and fire, requiring protective plates.

4、 Typical application (main scenario of Hengyi Lithium Battery)

Consumer electronics: mobile phones, tablets, laptops, Bluetooth earphones, smartwatches, power banks.

Wireless devices: power tools, floor sweepers, drones, model aircraft, game consoles.

Wearable: wristbands, smart glasses, medical monitoring devices.

Small power/energy storage: electric two wheelers, low-speed vehicles, portable energy storage, photovoltaic matching.

5、 Difference from ordinary lithium batteries (liquid)

Electrolyte: gel/solid polymer vs liquid electrolyte.

Encapsulation: Aluminum plastic soft film (thin and bendable) vs metal hard shell (fixed shape).

Safety: Low risk of leakage and explosion compared to high risk of leakage and thermal runaway.

Cost: higher vs lower.

6、 Characteristics of Hengyi Polymer Battery

Full specifications: ultra-thin, irregular, high magnification customization, suitable for multiple scenarios.

High safety: Soft package leak proof+protection circuit, certified by CE/FCC/RoHS.

High adaptability: Suitable for consumer electronics, wireless tools, energy storage, etc., supporting small batch customization and large-scale production.


 

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