Why use a DC generator instead of a traditional AC generator?

In Tandem, the DC generator feeds energy directly into the battery system at low voltage That allows: Higher charging efficiency Optimized engine operation No need to convert AC from generator back into DC for battery charging A traditional generator powers appliances directly and runs continuously. A DC generator in Tandem works strictly as a smart charger.

How does the system operate during an outage?

When grid power fails: The battery instantly powers your home. When battery charge drops to a set level, the DC generator automatically starts. The generator runs at optimal speed and charges the battery. Once charged, the generator shuts off automatically. There is no manual start/stop required.

Why is this more fuel-efficient than a normal generator setup?

In a standard generator-only setup: The engine runs continuously. It operates inefficiently at low loads. It wastes fuel while idling. In Tandem: The generator runs only in short charging cycles. It operates at peak efficiency during charging. It shuts off completely when charging is finished This is why the flyer states fuel savings of up to 40% compared to always-running generators.

Does my home ever receive “raw generator power”?

No. Even when the generator is running, your appliances are powered by the battery inverter — not directly by the engine That means: Stable voltage Clean sine wave output Safe power for electronics No fluctuations from engine RPM changes The generator is electrically isolated from your appliances — it only charges the battery.

Tandem Power: Smart Automatic Backup

An intelligent energy system that combines inverter battery generator and direct current (DC) generator into a smart duo

Learn configurations How It Works

Automatic hybrid operation

Up to 40% fuel savings

True 24/7 Energy Autonomy

How It Works

The Tandem Power system is K&S’s unique know-how, allowing your power station to team up with a dedicated low-voltage DC generator as a smart duo. Available in both 24V and 48V architectures, the system easily integrates into existing energy setups without forcing costly upgrades.

When the built-in battery runs low, the DC generator starts automatically, operates at peak efficiency to recharge the battery in as little as 2 hours, and then shuts down once charging is complete. No manual start or stop, no wasteful idling — the system manages itself intelligently.

The result: up to 40% fuel savings, significantly lower noise, and smarter energy performance compared to a traditional always-running generator.

Benefits:

Automatic Operation

The system starts and stops the generator on its own without manual switching or monitoring. Your power manages itself

Stable Power for Sensitive Electronics

The generator charges the battery - not your devices directly, so appliances receive clean inverter power, safe for computers, routers, and smart home systems

Up to 40% Fuel Savings

The generator runs only when needed and always at optimal efficiency. Zero idle time and wasted fuel

Longer Generator Lifespan

Short, optimized charging cycles reduce engine wear while less runtime means lower maintenance costs and extended equipment life

Quiet Comfort

Most of the time, your home runs on silent battery power. The generator operates briefly and efficiently, reducing noise and improving everyday comfort

True 24/7 Energy Autonomy

The system continuously monitors and balances energy sources. You get uninterrupted power without thinking about it