Product Overview
The Freedom Won eTower 2 is a modular 5.12 kWh lithium iron phosphate (LiFePO4) battery designed for residential backup power, hybrid and solar energy storage systems. Its 51.2 V nominal battery platform provides expandable storage for suitably configured 48 V inverter systems, with integrated monitoring and battery management.
Key Features
- 5.12 kWh nominal capacity and approximately 4.5 kWh usable energy at 90% depth of discharge.
- Expandable from one to six parallel modules, delivering up to 30.72 kWh nominal capacity.
- Integrated battery management system (BMS) provides voltage, current and temperature protection.
- Wi-Fi and Bluetooth connectivity supports monitoring through the Freedom Won app.
- Forced-air cooling and a painted steel enclosure for indoor installations.
- CAN bus, RS485 and RS232 communication interfaces.
- Manufacturer states backwards compatibility with previous-generation eTower systems, subject to installation requirements.
Applications
- Residential solar power systems and hybrid energy storage.
- Backup power for essential household loads during electricity interruptions.
- Modular energy storage installations requiring future expansion.
- Time-of-use energy storage applications with a compatible inverter and system design.
Why Choose This Product?
The eTower 2 combines a modular battery format with local manufacturer support, built-in monitoring and expansion options. It is a practical option for customers who want to start with a single battery and increase storage capacity as their requirements change.
Important Notes
- This listing is for one 5.12 kWh eTower 2 battery module, not a complete multi-module tower.
- Pedestal, stacking kits, rack or wall-mount hardware and DC cable kits are optional accessories; confirm requirements and inclusions before ordering.
- Do not connect battery modules in series. Consult the manufacturer's technical documentation for parallel configuration requirements.
- Inverter compatibility, communications configuration and installation design must be checked by a qualified installer.
- Designed for indoor use. Manufacturer's recommended ambient operating temperature range is 10–25 °C.
- Warranty: 5 years or 4,000 cycles at 90% depth of discharge, subject to manufacturer terms.
- IEC 62619 certification is listed by the manufacturer as in progress; do not treat it as completed certification.
Technical Specifications
| Specification |
Detail |
| Brand |
Freedom Won |
| Model |
eTower 2 |
| Product Type |
Modular lithium battery |
| Battery Chemistry |
Lithium iron phosphate (LiFePO4) |
| Nominal Energy |
5.12 kWh |
| Usable Energy at 90% DoD |
4.5 kWh (manufacturer stated) |
| Nominal Voltage |
51.2 V |
| Voltage Range |
47–56 V |
| Capacity |
100 Ah |
| Maximum / Continuous Charge Power |
4.2 / 3.6 kW |
| Maximum / Continuous Discharge Power |
5.2 / 4.7 kW |
| Maximum Recommended Inverter |
5 kVA (single module) |
| Expandable Capacity |
1–6 modules, 5.12–30.72 kWh nominal |
| Communication |
CAN bus, RS485, RS232, Wi-Fi, Bluetooth |
| Cooling |
Forced air |
| Enclosure |
Painted off-white steel; indoor use |
| Dimensions (Single Module, Without Pedestal) |
224 × 442 × 384 mm |
| Weight |
52 kg |
| Warranty |
5 years or 4,000 cycles |
