Reliable Cabin Power

Four WT5100 rack batteries provide 20.48kWh of nominal storage alongside a 7.2kW 120/240V split-phase inverter for outage backup, solar self-use, off-grid cabins, and water systems.

Daily Energy Rhythm

Use daytime solar for active loads and battery charging, schedule cooking and water pumping for early evening, and preserve stored energy for overnight essentials and morning reserve.

Prioritize Cabin Loads

Balance cabin essentials, water systems, a small mini split, and workshop equipment by prioritizing or staggering loads around available solar energy and battery reserve.

Overnight Runtime Planning

Estimated runtime ranges from 37.3–41.9 hours at a 0.4kW overnight base load to 3.3–3.7 hours at a 4.5kW heavy load, depending on operating conditions.

Balanced Energy Capacity

The system pairs 20.48kWh of nominal storage with 7.2kW of inverter output, providing approximately 2.1–2.3 hours at a constant full rated load under the stated planning assumptions.

Solar Generator Recovery

Two MPPT groups support up to 9kW of PV input with a 500V maximum open-circuit voltage, while generator mode provides a recovery path during extended low-sun periods.

Split Phase Performance

The inverter provides 7.2kW 120/240V split-phase pure sine wave output, 10.8kVA peak power, 10ms typical transfer, and motor-starting support up to 4HP.

Coordinated Battery Protection

Intelligent BMS protection monitors voltage, current, temperature, and cell balance across four WT5100 modules while supporting front-access CAN and RS485 communication.

Professional Cabin Installation

The four IP22 battery modules require a supported rack or shelf in a dry indoor location, while the wall-mounted inverter needs suitable structural support and ventilation clearances.

FAQs

What is included with the system?

The core system includes four WT5100 51.2V 100Ah rack batteries and one 7.2kW 120/240V split-phase hybrid inverter. Rack, shelf, cables, protection devices and other installation accessories must match the final system design.

How much energy and power does it provide?

The four WT5100 batteries provide 20.48kWh of nominal storage. The inverter delivers 7.2kW of rated 120/240V split-phase output and up to 10.8kVA of peak power.

What cabin loads can the system support?

The system can support prioritized cabin essentials, water systems, compatible heating or cooling equipment and selected workshop loads. Actual coverage depends on simultaneous demand, appliance starting surge and circuit configuration.

How long can it provide overnight power?

Planning estimates range from approximately 37.3–41.9 hours at a 0.4kW overnight base load to 3.3–3.7 hours at a 4.5kW heavy load. Actual runtime varies with load, reserve settings, efficiency, temperature and operating conditions.

Can it run 120V and 240V equipment?

Yes. The inverter provides 120/240V split-phase pure sine wave output and supports motor starting up to 4HP. Output from a single 120V phase is limited to 6kW by the wiring terminals, so loads must be balanced and sized correctly.

Can solar and a generator recharge the batteries?

Yes. Two MPPT groups support up to 9kW of PV input with a 500V maximum PV open-circuit voltage, and generator mode provides a recovery option during extended low-sun periods. Charging performance depends on array design, weather, active loads and generator configuration.

Do the batteries include BMS protection?

Yes. Each WT5100 includes an intelligent BMS that monitors voltage, current, temperature and cell balance while providing overcharge, over-discharge, overcurrent and short-circuit protection. CAN and RS485 communication are supported.

Is professional installation required?

Yes. The four batteries weigh approximately 405.6 lb combined and require a supported rack or shelf in a dry indoor location. The wall-mounted inverter requires suitable structural support, ventilation clearances and code-compliant electrical installation.