Felicity FLB48230WG1-H battery, 11.7 kWh, LiFePo4, low-voltage, with heating

This is a battery for the home, the size of a small refrigerator, which collects the energy produced by the panels during the day and gives it back in the evening and at night. The chemistry used, lithium iron phosphate, is the one generally chosen for domestic storage, because it withstands thousands of charges and behaves stably with temperature. This version additionally has its own cell heating, which switches on in cold weather, so that the battery can be charged in winter too, in unheated or semi-outdoor spaces.

The 11.7 kWh, of which over 95% can be used, normally cover the evening and night consumption of a home and can keep it running during a power cut. The battery delivers 100 A in the recommended regime, up to 150 A continuous and 200 A for 15 seconds - enough for pumps, compressors or air conditioning to start without the protections tripping; as a guide, 150 A at 51.2 V means around 7.5 kW, the real limit being set by the inverter used. The manufacturer declares over 6000 cycles, that is, as a guide, over 16 years at one cycle per day. The box measures 683 x 450 x 258 mm and 53 kg, it is mounted on the wall or on the floor, and the battery status is followed from the app, over WiFi or Bluetooth. If the needs grow, up to 32 units can be connected in parallel.

LiFePO4 cells, 11.7 kWh / 230 Ah / 51.2 V nominal, working range 44.8-57.6 V, compatible with 48 V hybrid and off-grid inverters. Recommended charge/discharge current 100 A, maximum continuous 150 A, peak 200 A for 15 s, DoD over 95%, service life over 6000 cycles (25 °C, 0.5C/0.5C, 90% DOD, 70% residual capacity at EOL). RS485 or CAN communication, integrated WiFi and Bluetooth modules. IP65 enclosure, 683 x 450 x 258 mm, 53 kg, charging temperature 0...+55 °C, discharging -20...+55 °C, with an integrated heating system for the "-H" version. BMS with fuse, breaker and aerosol fire-suppression system; up to 32 units in parallel (374.4 kWh); UN 38.3 certification.

Who it suits

Suitable for a house with a 48 V hybrid or off-grid inverter of 5-12 kW, especially where the battery must be placed in an outbuilding, an unheated garage or a semi-outdoor space.

Terms explained

• Low voltage (48 V): The battery works around 51 V, the standard level of hybrid inverters for houses, unlike the systems of hundreds of volts used by companies.
• Peak current: The high current the battery can deliver for a few seconds, when a motor or a compressor starts, without the protection shutting the system down.
• DoD (depth of discharge): How much of the energy in the battery can actually be used; over 95% means that only a small part is kept in reserve, to protect the cells.

Technical specifications

Recommended applications

• Residential storage for increasing photovoltaic self-consumption
• Hybrid and off-grid 48 V systems with 5-12 kW inverters
• Backup for homes in areas with frequent grid outages
• Installations in unheated or semi-outdoor spaces, where cell heating is needed

Warranty

10 years

Technical details

Specifications confirmed from the manufacturer's datasheet

Felicity FLB48230WG1-H is a residential storage module with LiFePO4 cells, with a rated energy of 11.7 kWh, a capacity of 230 Ah and a rated voltage of 51.2 V. The working range is 44.8-57.6 V, which makes it compatible with 48 V hybrid and off-grid inverters. The usable depth of discharge exceeds 95%, and the declared service life is over 6000 cycles measured at 25 °C, 0.5C/0.5C regime, 90% DOD and 70% residual capacity at end of life.

On the current side, the recommended charge and discharge value is 100 A, with a continuous maximum of 150 A and a peak of 200 A for 15 seconds. This allows the supply of high starting loads, such as pumps and compressors, without tripping the BMS protections. Communication with the inverter is over RS485 or CAN, and the battery has integrated WiFi and Bluetooth modules for local and remote monitoring through the app.

The enclosure has an IP65 protection degree and allows wall or floor mounting, including in unheated or semi-outdoor spaces. The "-H" version includes the heating system that keeps the cells within the temperature window permitted for charging (0...+55 °C), discharging being possible from -20 °C. The dimensions are 683 x 450 x 258 mm, with a weight of 53 kg. The BMS integrates the fuse, a breaker and an aerosol fire-suppression system.

Up to 32 units can be connected in parallel, resulting in a maximum capacity of 374.4 kWh, which covers both residential applications and small commercial ones.