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  • What are the typical capacity specifications for electric bicycle batteries

    2025-09-27

    The capacity specifications of electric bicycle batteries are usually measured in ampere hours (Ah), and mainstream capacity specifications include; 10Ah、12Ah、16Ah、20Ah、32Ah、40Ah Wait, some high-end models or special purpose batteries may reach; 45Ah Even higher. The following are specific classifications and analyse...

  • What are the disadvantages of all solid state batteries

    2025-09-27

    Although all solid state batteries have advantages in safety, energy density, and cycle life, their disadvantages are also significant, mainly reflected in the following aspects:1. High cost: The commercialization threshold remains highRaw material cost: The price of sulfide solid electrolytes (such as lithium sulfide)...

  • 202025-05

    Structure and composition of electric bicycle power battery

    1、 Battery type and chemical compositionElectric bicycle power batteries are mainly divided into three categories, each with its own chemical characteristics and application scenarios:Lead acid batteryElectrode material: Lead and its oxides as positive and negative electrodes, sulfuric acid solution as electrolyte.Features: Low cost, mature technology, but low energy density (short battery life), heavy weight, gradually replaced by lithium batteries.Lithium ion battery (mainstream choice)Positive electrode material:Lithium iron phosphate (LiFePO ₄): High safety, ignition point up to 800 ℃, long cycle life, low cost (0.6 yuan/Wh).Ternary materials (such as lithium nickel cobalt manganese oxide): high energy density, longer range, but higher cost (0.8 yuan/Wh).Negative electrode material: graphite or graphite like carbon material, providing lithium ion insertion/extraction channels.Electrolyte: Organic solvents containing li

  • 182025-05

    What is the difference between 36V and 48V (equivalent ampere hours) electric vehicle batteries

    Electric vehicle batteries, 36V and 48V (equivalent ampere hour AH), 48V has a larger capacity, higher range, and stronger power than 36V. At the same time, 48V has a higher cost and larger size than 36V.1、 Differences in Physical Structure and CostComposition of battery cells36V battery: consisting of three 12V cells connected in series, compact in size, suitable for small car frames.48V battery: consisting of four 12V battery cells connected in series, the weight and volume increase by about 30%, requiring a larger installation space.Cost comparisonMaterial cost: Due to the large number of battery cells, the cost of 48V batteries is 20% -30% higher.Maintenance cost: The replacement cost of 48V batteries is 30% -40% higher, and professional equipment is required to test the consistency of battery cells.2、 Performance comparisonPower and speedAcceleration performance: The 48V battery has higher power output, accelerating 1

  • 172025-05

    Application of Cobalt Element in Power Batteries

    1、 Basic characteristics of cobalt elementCobalt (Co) is a silver white ferromagnetic metal with the following key characteristics:Physical properties: high hardness, high tensile strength, melting point of 1495 ℃, density of 8.9g/cm ³, and high temperature stability. Chemical properties: Stable at room temperature, but prone to react with oxygen, sulfur, etc. at high temperatures to form cobalt oxide (CoO) or cobalt trioxide (Co∝ O ₄). Electronic properties: Common valences are+2 and+3, and Co ³ ⁺ plays a role in stabilizing the crystal structure of battery cathode materials.2、 The core role of cobalt in power batteriesCobalt is a key component of lithium-ion battery cathode materials, especially playing an irreplaceable role in the following aspects:Stable crystal structure: Cobalt ions (Co ³ ⁺) occupy specific positions in the layered structure to prevent Li/Ni mixing and ensure smooth migration of lithium ions during c