Solplanet ASW5120-LB-G3 5K - LiFePO4 battery module with automatic fire extinguishing system

The Solplanet ASW5120-LB-G3 5 kW LiFePO4 battery is a modern low-voltage energy storage module based on LiFePO₄ chemistry with a nominal energy capacity of about 5.12 kWh. One such module can work as an independent reserve source, and several modules in a stack allow you to assemble a battery pack of up to 20.48 kWh for more demanding objects. In fact, this is the "brick" from which you construct your energy storage system for specific tasks.

The module is designed specifically to work with Solplanet hybrid inverters and other compatible 48-volt systems. The nominal voltage is 51.2 V, the capacity is 100 Ah, and the built-in electronics support charge/discharge currents up to 100 A and peak power up to 5.12 kW per module with a cycle efficiency of over 95% . A resource of up to 6000 cycles with daily use means years of stable operation without the capacity drops and constant maintenance typical of lead-acid batteries.

An important point regarding installation: the first ASW5120-LB-G3 5K module must be installed on a special Solplanet LB G3 Base base, which is sold separately. It is the base that forms the support area, sets the correct geometry of the stack, distributes the weight and organizes the cable connections. Up to three additional modules can be "built" onto the base, obtaining a tower of up to 20.48 kWh without additional metal racks.

Main advantages of Solplanet ASW5120-LB-G3 5 kW

1. Safe LiFePO₄ chemistry and multi-layered protection

LiFePO₄ is one of the safest chemistries for stationary systems: resistant to overheating, with minimal risk of thermal runaway. The ASW5120-LB-G3 5K module uses a full BMS, which constantly monitors voltage, current, temperature and cell balance. Additionally, double fuses, MOSFET protection, integrated fire extinguishing system and compliance with international IEC standards are implemented. This allows the battery to be safely placed in residential premises, technical rooms, near a solar inverter or heat pump.

2. Modularity and scalability

ASW5120-LB-G3 5K is a 5-kilowatt module that is used as a building block for larger systems. Need a basic backup for lighting, a pump, a router and an alarm system - one module is enough. Need to power a boiler, a heat pump, refrigerators, server equipment or a small office - just add a second, third, fourth module to the same stack. The stackable design allows you to increase capacity without re-engineering the entire system, and neat hidden cable routing simplifies service.

3. Working in harsh conditions

The battery case has a protection rating of IP66, which means complete protection against dust and resistance to strong splashes and rain. Solplanet directly declares the possibility of indoor and outdoor installation: in a boiler room, garage, separate technical cabinet or on the facade under a canopy. The operating temperature range of charge/discharge covers typical conditions for Ukraine, and passive cooling (natural convection) means the absence of noisy fans and moving parts.

4. High efficiency and resource

The charge-discharge efficiency of over 95% and high-quality LiFePO₄ cells provide real savings: energy from the panels or the network is returned in the form of useful electricity with almost no loss. A resource of up to 6000 cycles at a discharge depth of up to 90–95% provides approximately 10+ years of service in daily system operation. The battery easily tolerates regular deep discharges, so it can be used as the main energy storage, and not just as an “insurance”.

5. Convenient installation for installers

The design provides for wall or floor mounting. The base sets the support area and fixes the first module, and the following sections are simply installed on top and connected with intermodule cables. The weight of one module is about 46 kg - the optimal compromise: compact enough for manual installation by two people, but at the same time capacious in terms of energy. As a result, the system is quickly assembled and looks neat in a boiler room, garage or on a technical wall.

What tasks does Solplanet ASW5120-LB-G3 solve?

1. Reserve for power outages
   The battery takes over the power supply of critical consumers during accidents and planned network outages: circulation pumps, boiler or heat pump automation, refrigerators, routers, video surveillance, security systems, servers. One module of ~5 kWh covers the basic needs of an apartment or small house, and a configuration of 2–4 modules allows you to comfortably survive long night outages.

2. Maximizing self-consumption of solar generation
   During the day, the solar station often produces more than the house consumes, and in the evening the load increases. ASW5120-LB-G3 5K accumulates the daily surplus and releases it in the evening and at night - when the family returns home, turns on the lights, appliances, air conditioners. This reduces dependence on the grid, helps to better use its own generation and partially protects against changes in tariffs and rules for calculating "green" / direct sales.

3. Generator optimization
   If a diesel or gasoline generator is installed on site, the battery can act as a buffer. The generator is started less frequently and for shorter but more efficient cycles to charge the battery, and all small household and nighttime loads are supplied by the system from LiFePO₄. This reduces fuel consumption, noise, engine wear and the need to start the generator frequently at night.

4. Stable power supply for sensitive electronics
   Thanks to the BMS and compatible hybrid inverter, the user gets a stable 48-volt bus without deep voltage dips. For server equipment, network storage, telecom equipment, smart home systems, ACS and video surveillance, this is critical: fewer reboots, less risk of data loss and equipment failure.

Installation and operation recommendations

• It is advisable to install the battery in a dry, ventilated place with natural or organized air exchange.

• It is imperative to provide a flat, hard surface or a sturdy wall capable of supporting the weight of a full stack (up to 4 modules + base).

• The first module is always mounted on the Solplanet LB G3 Base, which is purchased separately; without the base, the system is considered to be mounted in violation of the manufacturer's requirements.

• Connection to the inverter, setting of CAN communication and charge/discharge parameters should be performed according to the official Solplanet instructions and preferably entrusted to a certified installer.

In conclusion, the Solplanet ASW5120-LB-G3 5 kW is a flexible, safe and technically mature module for building modern energy storage systems. It is equally well suited for household solar power plants and small businesses, allows you to scale capacity "as appetites grow" and provides exactly the energy independence that is expected from a high-quality backup power system today.