What is the lifespan of Toyota hybrid nickel-metal hydride batteries?

[Katherine]

Theoretically, the lifespan of Toyota hybrid nickel-metal hydride batteries can exceed eight years or even longer. Here is relevant information: 1. Nickel-metal hydride batteries: Nickel-metal hydride batteries are high-performance rechargeable batteries, categorized into high-voltage and low-voltage types. The positive electrode active material is Ni(OH)2 (referred to as NiO electrode), while the negative electrode active material is a metal hydride, also known as hydrogen storage alloy (referred to as hydrogen storage electrode). The electrolyte is a 6mol/L potassium hydroxide solution. 2. Differences between nickel-metal hydride batteries and lithium batteries: Nickel-metal hydride batteries have lower costs compared to lithium batteries; they are more environmentally friendly, containing no highly toxic components, and their materials are easier to recycle; they offer more stable performance, better safety, and are less affected by temperature; they exhibit memory effect during charging and discharging; they have smaller volumetric capacity and greater weight; they perform better in rapid charging and discharging and can utilize pulse charging.