When building a home energy storage system, selecting the right lithium-ion battery voltage is crucial. It's closely tied to actual power usage, device compatibility, safety performance, and cost-effectiveness.

Low-voltage systems (48V/51.2V)

Cost advantages: Relatively affordable, making them attractive to home users with limited budgets.

Easy and flexible installation: No professional electrician required, allowing users to complete DIY installation.

Intuitive safety features: The system voltage is below 60V, fully complying with the indoor safety voltage limits specified by the US UL 2743 standard, providing users with intuitive safety assurance.

Limitations: 

Poor energy efficiency: The high-current design results in significant line losses.

Limited power output: Unable to meet the power demands of high-power devices such as air conditioners and electric water heaters.

High-voltage systems (200V - 800V)

Mainly used in large-scale energy storage projects.

Core Advantages

Ultimate energy efficiency: Cycle efficiency ≥ 90%, support up to 80% depth of discharge (DOD), and a battery life exceeding 10 years.

Suitable for industrial applications: Particularly suitable for megawatt-scale energy storage projects, such as supporting energy storage facilities for photovoltaic power plants.

If you have a sufficient budget and your home requires high-power devices or requires a system with long-term stable operation, a high-voltage system is recommended.