51.2V 400Ah LFP Home Energy Storage Battery

Product Overview

As a premier manufacturer and dedicated supplier of advanced energy solutions, we present the 51.2V 400Ah 20kWh High Power LFP Battery. Engineered specifically for rigorous procurement demands, this high-capacity unit delivers uncompromising stability for large-scale residential and commercial setups. Its robust architectural design ensures seamless integration for sourcing professionals seeking dependable, long-lasting power storage.

• Massive 20kWh (20480Wh) rated energy capacity for continuous power supply.

• Premium LiFePO4 cell technology ensuring maximum safety and longevity.

• Heavy-duty 200A discharge capability to support multiple high-drain appliances.

Need highpower household energy storage? The 51.2V 400Ah LFP battery provides 20kWh (20480Wh) of rated power using premium LiFePO4 technology. Its key specs include 51.2V nominal voltage, 400Ah large capacity, 100A recharge current and 200A discharge current. Expect ≥5000 cycles and a 5-year warranty, plus multi-channel communication interfaces for flexible integration. It operates reliably across a wide temperature range and measures 1193.5x490x340mm (184kg net). Perfect for large families or high-demand residential scenarios where stable, durable power is a must.

1. Ultra-Large Capacity & High Power Output

This 51.2V 400Ah LFP battery has a 400Ah nominal capacity and 20kWh (20480Wh) rated power, providing massive energy storage for high-power household use. With 200A high discharge current and 100A recharging current, it supports the simultaneous operation of multiple high-power appliances like central air conditioners, electric water heaters and induction cookers, satisfying the power demand of large families and high-end residential scenarios.

2. Long Cycle Life & Reliable Warranty

Featuring a cycle life of ≥5000 times, this 20kWh household energy storage battery maintains stable capacity output with low attenuation during long-term use, far exceeding ordinary energy storage batteries in service life. Backed by a 5-year official warranty, it provides professional after-sales support for battery failure and maintenance, eliminating users' worries about long-term use and ensuring the reliability of the energy storage system.

3. Multi-Channel Communication & Intelligent Management

Equipped with RS485+CAN+RS232 multi-mode communication interfaces, this high power LFP battery enables seamless connection with household intelligent control systems, solar inverters and power grids. It supports real-time data transmission of battery status, charge/discharge current and voltage, realizing remote monitoring, intelligent regulation and fault early warning, greatly improving the intelligent level of household energy storage management.

4. Wide Temperature Adaptability & Strong Environmental Resistance

This 20480Wh energy storage battery features a 0-45℃ charging temperature range and an extended -20-55℃ discharging temperature range, adapting to different climatic environments. It can work stably in low-temperature winters and high-temperature summers, with no obvious performance attenuation in complex ambient temperatures, and is suitable for indoor installation in residential areas of different regions, with strong environmental adaptability.

5. Stable Performance & Standardized Charging

Adopting mature LiFePO4 cell technology, this residential LFP energy storage battery has stable charge/discharge performance, with a fixed 58.4V charging voltage and 41.6V discharging voltage, matching mainstream household solar energy storage system accessories. It has no memory effect, supports random charging and discharging, and the 400Ah minimum capacity ensures no capacity loss during long-term use, maintaining consistent power supply performance.

1. Large Villa & High-End Home Energy Storage

This 51.2V 400Ah LFP battery is specially designed for large villas and high-end residential buildings with high power consumption, storing solar energy converted by rooftop solar panels for daily power supply. Its 20kWh large capacity supports the simultaneous operation of multiple high-power household appliances and intelligent equipment, realizing on-grid connection and peak-valley electricity regulation, and significantly reducing household electricity costs.

2. Multi-Family Residential Community Energy Storage

For multi-family residential communities and apartment buildings, this 20kWh household energy storage battery can be used as a distributed energy storage unit, providing unified energy storage and emergency power supply for the community. Its multi-channel communication interfaces support centralized management of the community energy storage system, and the long cycle life meets the long-term use demand of the community, improving the overall energy utilization efficiency of the residential area.

3. Residential Emergency Backup Power Supply

As a high-power emergency backup power supply, this high power LFP battery provides long-time continuous power for families in case of grid power outage. With 200A discharge current and 20kWh capacity, it can supply power for household important equipment such as refrigerators, medical devices, lighting and intelligent security systems for more than 24 hours, ensuring the basic living needs and property safety of families.

4. Home Solar Off-Grid Power Supply System

For rural villas, suburban residences and homestays with unstable grid power supply or no grid coverage, this 20480Wh energy storage battery forms a complete off-grid solar power supply system with solar panels and inverters. It realizes self-sufficient power supply for residential daily life, the wide temperature adaptability copes with different outdoor installation environments, and the intelligent communication function facilitates remote monitoring and management.

Install the battery in a dry, ventilated and firm indoor space, keep a 25cm heat dissipation distance from walls and flammable materials. Connect with solar panels/inverters via RS485+CAN+RS232 interfaces, use a dedicated charger matching 58.4V charging voltage and 100A recharging current. Charge within 0-45℃ and discharge within -20-55℃, follow 41.6V standard discharging voltage. Regularly check connection terminals and communication status, clean dust to ensure stable operation.

Q1: How does the 200A discharge current benefit high-demand electrical environments?

A1: The 200A discharge current allows the battery to deliver a massive surge of power instantaneously. This is crucial for environments that need to start heavy inductive loads—such as central HVAC systems, electric water heaters, or large industrial motors—without causing voltage dips or triggering system shutdowns.

Q2: Can this 51.2V 400Ah battery be integrated into existing solar arrays featuring mixed inverter brands?

A2: Yes. The battery is equipped with an intelligent BMS featuring RS485, CAN, and RS232 communication ports. This multi-protocol design ensures seamless handshake compatibility with the vast majority of tier-one global inverter brands, facilitating smooth integration into pre-existing energy ecosystems.

Q3: What specific maintenance routines are required to ensure the ≥5000 cycle life?

A3: Thanks to the advanced LiFePO4 chemistry and the self-regulating active balancer within the BMS, the battery is virtually maintenance-free. We recommend a simple bi-annual visual inspection of the heavy-duty connection terminals for dust accumulation and a quick verification of the communication cable seating to ensure optimal data flow.

Q4: How does the unit perform in extreme climates, particularly in unconditioned storage spaces?

A4: The battery is encased in a thermally optimized chassis that supports discharging in environments as cold as -20℃ and as hot as 55℃. While extreme temperatures can marginally affect overall efficiency, the internal BMS actively regulates thermal thresholds to prevent permanent cell degradation, making it highly suitable for unconditioned utility rooms or outdoor-rated enclosures.

Q5: In the context of capacity expansion, how many of these 20kWh units can be linked in parallel?

A5: The sophisticated BMS architecture allows for multiple units of the exact same model to be connected in parallel. This enables project developers to scale their energy storage from a baseline of 20kWh up to massive configurations, perfectly aligning with phased project expansions and the growing energy demands of large facilities.