FLYFINE · FW48100 / FW48200

51.2V Wall-Mounted Battery for Solar Energy Storage

The FLYFINE 51.2V wall-mounted LiFePO4 battery series offers 100Ah and 200Ah capacity options for compatible residential solar storage and backup power systems.

The FW48100 provides 5.12kWh of rated energy, while the FW48200 provides 10.24kWh. Both models combine Grade A+ lithium iron phosphate cells, a battery management system and circuit breaker protection.

CAN and RS485 interfaces support compatible inverter communication. Bluetooth and Wi-Fi monitoring are available as optional functions.

FW48100 · 100Ah 5.12kWh 51.2V nominal voltage
FW48200 · 200Ah 10.24kWh 51.2V nominal voltage

Key Features

Two Storage Capacity Options

Choose 5.12kWh or 10.24kWh of rated energy according to your storage and backup needs. Both models use a 51.2V nominal battery architecture.

Grade A+ Cells and Battery Protection

New Grade A+ LiFePO4 cells are paired with a BMS and circuit breaker, providing two levels of overcurrent protection.

Wall-Mounted Design

The wall-mounted enclosure keeps the battery off the floor and helps organize indoor equipment space. Confirm mounting requirements for the selected model before installation.

Communication and Optional Monitoring

CAN and RS485 interfaces support integration with compatible inverters. Specify optional Bluetooth or Wi-Fi monitoring when ordering.

Technical Specifications

FLYFINE FW48100 and FW48200 Battery Comparison
Parameter FW48100 FW48200
Battery Chemistry LiFePO4 LiFePO4
Installation Wall-mounted Wall-mounted
Nominal Voltage 51.2V 51.2V
Battery Voltage Range 43.2–57.6V 43.2–57.6V
Nominal Capacity 100Ah 200Ah
Rated Energy 5.12kWh 10.24kWh
Standard Charge/Discharge Current 100A 100A
Maximum Charge/Discharge Current 200A 200A
Communication Interfaces CAN / RS485 CAN / RS485
Optional Connectivity Bluetooth / Wi-Fi Bluetooth / Wi-Fi
Self-Discharge ≤3% per month ≤3% per month
IP Rating IP21 IP21
Cooling Natural cooling Natural cooling
Cycle Life* ≥6,500 cycles ≥6,500 cycles
Charging Temperature 0°C to 55°C 0°C to 55°C
Discharging Temperature −20°C to 55°C −20°C to 55°C
Operating Altitude 0–4,000m 0–4,000m
Altitude Derating Above 2,000m Above 2,000m

*Cycle-life test conditions: 25 ± 2°C, 0.5C charge / 0.5C discharge, with an 80% end-of-life capacity threshold, as stated in the datasheet. Actual service life depends on operating conditions. Confirm the final specifications and configuration when ordering.

Choosing Your Battery Capacity

FW48100 · 5.12kWh

Provides 100Ah capacity at 51.2V nominal voltage. Select this model when its usable energy and electrical limits meet the project's storage requirements.

FW48200 · 10.24kWh

Provides twice the rated energy of the FW48100. Both models have the same specified 200A maximum charge/discharge current, so higher capacity does not mean twice the output power.

Applications

Residential Solar Storage

Store solar energy through compatible charging and inverter equipment for later use. Charging and discharging behavior depends on the system configuration and settings.

Backup Power for Selected Loads

Pair the battery with a compatible backup-capable inverter to supply selected loads during an outage. Runtime depends on usable battery energy, load demand and conversion efficiency.

Compatibility and Installation

  • Confirm inverter compatibility: Check the supported battery voltage range, charging settings, CAN/RS485 protocol and wiring requirements.
  • Check current limits: Both models are specified for 100A standard and 200A maximum charge/discharge current. Match cables and protection equipment to the approved system configuration.
  • Use a protected indoor location: Both batteries have an IP21 rating. Keep them away from rain, water sources and excessive heat.
  • Confirm mounting requirements: Verify wall suitability, mounting hardware and required clearances for the selected model.
  • Confirm battery expansion arrangements: Obtain model-specific approval before connecting multiple batteries. Do not assume mixed-capacity or series connections are supported.

Frequently Asked Questions

Are these suitable for 48V battery systems?

Both models have a nominal voltage of 51.2V and can be considered for compatible 48V-class systems. Confirm that the inverter supports the 43.2–57.6V battery voltage range and the required communication protocol.

What is the difference between the two models?

FW48100 provides 100Ah and 5.12kWh, while FW48200 provides 200Ah and 10.24kWh. Both models have 100A standard and 200A maximum charge/discharge current.

How long can the battery provide backup power?

Backup duration depends on connected loads, usable battery energy, system settings and inverter efficiency. Provide your load list and required backup duration for system sizing.

Can the batteries be installed outdoors?

Both models have an IP21 rating and should be installed in a suitable protected indoor location, away from direct rain and outdoor weather.

Are Bluetooth and Wi-Fi included?

Bluetooth and Wi-Fi are optional functions. Confirm your required monitoring configuration when requesting a quotation.

Request a 51.2V Wall-Mounted Battery Quote

For distribution or installation projects, send FLYFINE your preferred model (FW48100 or FW48200), required quantity, destination market, inverter model and monitoring requirements. Our team can confirm the configuration and provide a quotation.