Description

Product Description

The Freedom Won eTower 5000 is a stackable lithium iron phosphate (LiFePO₄) energy storage module built for reliable daily cycling in smaller solar and backup power installations. Each e5000 unit offers 5 kWh of nominal capacity with a high depth of discharge, allowing up to 90 percent usable energy per module. The modular design enables installation of up to six modules in a tower or rack configuration to scale total energy capacity from 5 kWh to 30 kWh. The eTower system operates at a 52 V nominal voltage suitable for 48 V hybrid and grid-tie inverters and includes a plastic pedestal for tower stacking. Internal protections managed by an integrated Battery Management System (BMS) safeguard against overcurrent, over-voltage, under-voltage, temperature extremes, weak cells, and minimum state-of-charge conditions. Communication interfaces such as CAN Bus and RS485 allow integration with compatible inverters and system controllers, while the steel enclosure rated for indoor use ensures durability. Freedom Won backs the eTower range with a limited warranty and a design life exceeding 15 years under recommended conditions.

Technical Specifications (Bullet Form)

General

Product: Freedom Won eTower 5000 Battery Module (single module)

Battery chemistry: Lithium Iron Phosphate (LiFePO₄)

Nominal energy capacity: 5 kWh per module

Usable energy at 80 % DoD: 4 kWh per module

Usable energy at 90 % DoD: 4.5 kWh per module

Nominal voltage: 52 V (suitable for 48 V inverter systems)

Minimum voltage: 47 V

Maximum voltage: 56 V

Current & Power

Current capacity: 100 Ah per module

Continuous discharge rate (normal use): 4 700 W per module

Maximum discharge rate (5 minutes): 5 200 W per module

Maximum charge rate (5 minutes): 4 200 W per module

Continuous discharge rate: 0.9 C (≈4.7 kW)

Continuous charge rate: 0.7 C (≈3.5 kW)

Scalability

Stackable up to 6 modules (30 kWh total capacity)

Modules can be arranged in tower or rack configurations

Battery Management & Protection

Integrated Battery Management System (BMS) for protection against:

Overcurrent

Cell over-voltage and under-voltage

Temperature out of range

Weak cell detection

Minimum state-of-charge control

Internal safety protections including electronic fault limiting

Communication & Interfaces

CAN Bus (RJ45) for inverter and system controller communication

RS485 (RJ45) interface for inverter communications (some models)

RS232 (RJ45) for firmware and configuration (by Freedom Won technicians)

Physical

Weight per module: ~45–47 kg

Dimensions (single module with pedestal): 247 × 460 × 463 mm (H × W × D)

Enclosure: Steel painted white, indoor use only

DC connection: 2 × M6 bolts each for positive and negative terminals

Pedestal included for stack/tower formation

Cycle Life & Warranty

Charge/discharge cycle life: ~4 000 cycles at 80 % DoD

Design life: >15 years under ideal conditions

Warranty: Limited warranty (varies by supplier up to 10 years)

Applications

Residential solar energy storage

Light commercial backup and UPS support

Hybrid inverter systems

Telecom and small equipment backup