What are the types of household energy storage batteries?

1. Classified by battery type:

• Lithium-ion batteries: The current mainstream choice, including lithium iron phosphate, ternary lithium, and lithium titanate. They feature high energy density, long lifespan, and high efficiency. Among them, ternary lithium has slightly lower safety, and lithium titanate has extremely high costs, so lithium iron phosphate is almost the dominant type in energy storage systems.
• Lead-acid batteries: With low cost and mature technology, they can withstand overcharging but have low energy density, large volume, short cycle life, and poor environmental friendliness. Suitable for scenarios with limited budgets, they are gradually being replaced by lithium batteries.
• Solid-state batteries: Solid electrolytes replace liquid ones, offering extremely high safety (no risk of fire or explosion) and higher energy density. However, the technology is not yet mature and cannot be popularized for the time being.
• Other batteries: Nickel-metal hydride and nickel-chromium batteries have been gradually eliminated by the market due to environmental issues. Sodium-ion batteries have low cost and high safety, but their energy density and cycle life are currently lower than lithium batteries, making them unaccepted by the energy storage market.

2. Classified by appearance and installation form:

• Wall-mounted: Suitable for installation in small household spaces with a concise appearance, space-saving, and easy installation.
• Recessed wall-mounted: Hidden inside the wall, suitable for households that plan to install energy storage in advance and do not take up space.
• Wheeled mobile type: Easy to move, suitable for users with higher requirements for battery capacity.
• Horizontal stacked type: Suitable for households with limited space that need modular expansion.
• Rack stacked type: Suitable for households with large demand, installed on a rack, usually used for parallel expansion of multiple batteries.
• Inverter integrated type: Integrates an inverter and a battery, suitable for households with comprehensive needs, supporting single-phase and three-phase power grids.