Felicity Solar high-voltage storage tank FLH96050SG01 20.48 kWh

The Felicity Solar FLH96050SG01 in the maximum configuration with 20.48 kWh is the ultimate power station for demanding homes, apartment buildings and small businesses. This system, consisting of four stacked battery modules, offers an enormous energy reserve that enables maximum independence from the public grid. It is specially designed to efficiently cover high energy demands from electromobility and heat pump heating, as well as to bridge longer periods without sunlight.

Highlights at a glance

• Maximum storage capacity: At 20.48 kWh, this system offers one of the highest capacities in the home storage segment, ideal for maximum self-sufficiency and emergency power supply.
• Modular construction (4-stack): The system consists of four battery modules, each 5.12 kWh, and a BMS control unit, which are wirelessly stacked on top of each other ("Plug & Play").
• Integrated safety: Each module is equipped with an advanced aerosol fire extinguishing system that reacts immediately in the event of an emergency – an industry-level safety standard.
• High-voltage efficiency: The high system voltage minimises line losses and ensures optimum efficiency, especially when operating powerful consumers.
• Durable & robust: Uses modern LiFePO4 cells for over 6000 cycles lifespan and an IP65-certified housing for flexible installation locations.
• Smart communication: Compatible with the market-leading hybrid inverters (Deye, Solis, Growatt, GoodWe, etc.) via CAN/RS485 interfaces.

The power station for the energy transition at home

With over 20 kWh of storage capacity, this system is predestined for sector coupling. It stores enough solar energy to meaningfully charge an electric car even after sunset or to run a heat pump through cold winter nights without needing expensive grid electricity. For commercial operators, it effectively helps with "peak shaving" (cutting load peaks) to reduce grid charges.

Simple installation despite high output

Despite the impressive performance data, installation remains manageable. Thanks to the modular design, you do not need to move 200 kg all at once. The individual modules are placed one after another at the installation location and automatically lock with each other. This saves time and installation costs.
 

Characteristics

FAQs for the Felicity FLH96050SG01 (20.48 kWh)

Do I need a special inverter for this size?

You need a high-voltage hybrid inverter, which can manage the appropriate voltage and capacity. Most 3-phase hybrid inverters (e.g., Deye 10kW/12kW, Growatt SPH series) are perfectly suited for this battery size. Pay attention to the permissible voltage range (Input Voltage Range) of the inverter.

How big is the storage tower?

Since four modules plus the BMS unit (base/top) are stacked on top of each other, the tower reaches a considerable height. Make sure there is enough vertical space at the installation location (e.g., basement, garage) and that the floor can bear the weight of over 200 kg (solid ground recommended).

Can I connect two of these towers in parallel?

Yes, where there is very high energy demand (e.g., multi-generation house or business), several of these towers can be connected in parallel to one or more inverters to achieve capacities of 40 kWh or more. However, this requires careful coordination with the inverter.

Why LiFePO4 and not Li-Ion (NMC)?

LiFePO4 (lithium iron phosphate) is considered the safest cell chemistry on the market. It is thermally stable (no "thermal runaway" in normal faults), cobalt-free (more environmentally friendly), and has a significantly higher cycle life than traditional Li-Ion batteries, which is crucial for the economics of an investment of this size.

 

Scope of delivery: Felicity Solar FLH96050SG01 (20.48 kWh HV Battery Storage Set)

1 x Felicity FLH96050SCG01 BMS control unit

• The central high-voltage management module, which is mounted on top of the stack and controls communication with the inverter.

4 x Felicity FLH48100-S battery modules (5.12 kWh each)

• Four stackable high-voltage LiFePO4 storage units that together provide the total capacity of 20.48 kWh.

1 x base plate (Base)

• A solid base for floor mounting, serving as a stable pedestal for the entire battery tower.

1 x set of internal connection cables (Plug & Play)

• Short DC bridges and communication cables for the electrical coupling of the four modules within the tower.

1 x external high voltage cable set (DC)

• A pair of specialised power cables for the safe connection of the battery tower to the high-voltage hybrid inverter.

1 x communication cable (BMS-to-Inverter)

• A pre-assembled data cable for connecting the control unit to the inverter via CAN or RS485 interface.

1 x mounting set (tilt protection & screws)

• All mounting materials for wall fixing of the tower as well as screws for mechanical module connections.

1 x user manual (User Manual)

• A technical manual with detailed instructions for stacking, BMS configuration, and important safety notes.