With the breakthrough rise of the digital industry, ternary lithium batteries and nickel-metal hydride rechargeable batteries are becoming increasingly popular among users. Their applications have expanded from traditional small-scale production and household appliances (such as hair dryers, electric toothbrushes, and shavers) to smart products (such as tablets, solar streetlights, robots, new energy vehicles, and electric vehicles).
So, which is better, ternary lithium batteries or nickel-metal hydride rechargeable batteries? There's no definitive answer to this question. Simply saying one is better would be too hasty. In reality, both nickel-metal hydride and lithium-ion batteries have their own advantages, and they are roughly equal.
I. Advantages and disadvantages of nickel-metal hydride batteries
1. Excellent performance in ultra-low temperature charge and discharge applications;
2. Service life of the circulation system (increased to 1000 cycles);
3. Green, environmentally friendly, energy-saving, and pollution-free;
4. The research and development technology for lithium-ion batteries is more complete and sophisticated than that for lithium-ion batteries.
5. Compared with lead-acid batteries, the energy density is significantly improved, with a net weight energy density of 65 watts per hour and a volumetric energy density that is significantly increased by 200 watts per hour/L;
6. High power, high density, and capable of charging and discharging with high current;
The battery has poor performance in ultra-high temperature environments, so it's best to avoid letting the ambient temperature exceed 45 degrees Celsius. Otherwise, its lifespan will be reduced rapidly, and its internal resistance may increase.
Overcharging is extremely harmful to battery life and poses corresponding safety risks. Therefore, charging should be stopped when the battery is fully charged.
II. Advantages and disadvantages of ternary lithium batteries
1. High energy density and good cycle system performance make it more suitable for the future development trend of new energy vehicle batteries. It is also suitable for northern climates, and the battery is more stable at ultra-low temperatures.
2. The battery exhibits no memory effect, and its key protections—overcharge protection, over-discharge protection, over-temperature protection, and over-current protection—can be further enhanced and improved. This would allow for a more comprehensive and scientifically designed safety system, ensuring the battery operates in a safe and protected state. Compared to lithium iron phosphate batteries, ternary lithium-ion batteries are increasingly suitable for current and future family electric vehicles.
3. Ternary lithium-ion batteries have strong adaptability to high and low temperatures and can be used safely in natural environments ranging from -20℃ to 60℃. After proper processing, they can also be used safely in natural environments down to -45℃.
4. Ternary lithium-ion batteries are green, environmentally friendly, and energy-saving. Regardless of manufacturing, safe use, or disposal, they do not contain or produce any toxic or harmful heavy metal elements and substances such as lead, mercury, and cadmium.
Lithium-ion batteries generally suffer from poor safety, posing a risk of explosion; the high-temperature structure of nickel, cobalt, and aluminum is unstable, resulting in poor high-temperature safety and making them highly susceptible to safety risks.
So, which is better, ternary lithium batteries or nickel-metal hydride rechargeable batteries? It depends on your intended use and safety requirements. If you need high output power, you can choose nickel-metal hydride batteries, which are environmentally friendly, energy-saving, and have a stable rated voltage. For small, portable devices like mobile phones, ternary lithium batteries are a better choice.
