Xantrex C-Series Solar Charge Controller - 35 Amps

Unlock Reliable Power Management with the Xantrex C35

Harness the full potential of your solar setup with the Xantrex C35, a versatile 35-amp PWM charge controller designed for off-grid adventures, RVs, marine applications, and remote cabins. This robust controller stands out by intelligently managing power from your PV panels to keep batteries charged efficiently, preventing overcharge while extending overall system longevity. Unlike basic controllers, the C35 employs pulse width modulation (PWM) technology with multi-stage charging that's temperature compensated, adapting to real-world conditions for optimal performance.

Whether you're powering lights in a van life build or maintaining deep-cycle batteries for backup energy, the C35 delivers silent, solid-state operation powered by a microprocessor that fine-tunes every cycle. Its multi-color LED status indicator provides at-a-glance monitoring, so you always know your system's health without extra gadgets—though an optional remote display tracks cumulative amp-hours for deeper insights.

Key Advantages for Everyday Solar Users

The C35 shines in practical scenarios where reliability trumps complexity. PWM charging pulses power in precise bursts, reducing heat buildup and battery stress compared to simpler on/off methods. This multi-stage process—bulk, absorption, and float—ensures batteries reach full capacity without gassing or sulfation, a common issue in harsh environments like dusty deserts or salty coastal air.

• Battery Longevity: Temperature compensation adjusts charge rates based on ambient conditions, preventing under- or over-charging that shortens battery life.
• Versatile Configurations: Easily set for 12V or 24V systems in the field, adapting to your setup without tools.
• Nighttime Efficiency: Automatically isolates from the battery after sunset, minimizing vampire drains and conserving energy.
• Universal Compatibility: Works seamlessly with negative ground or ungrounded systems, ideal for diverse solar arrays.

Triple-Threat Functionality: Charge, Diversion, or Load Control

One controller, endless possibilities. Configure the C35 as a primary PV charge controller for direct solar-to-battery flow, a diversion regulator to redirect excess power to dump loads like water heaters, or a load controller for DC appliances. This flexibility makes it a go-to for hybrid systems where you might blend solar with wind or hydro inputs.

In diversion mode, surplus energy heats water or powers resistors instead of wasting it, turning your setup into a smart energy recycler. For load control, it safeguards lights, pumps, and fans from overloads, ensuring safe operation even during peak draws.

Built Tough for Real-World Demands

Engineered for the wild, the C35 features conformal-coated circuit boards that resist corrosion and a powder-coated aluminum enclosure shrugging off UV rays, moisture, and impacts. Electronic safeguards kick in against short-circuits, overloads, and overheating, resetting automatically when conditions normalize—no fuses to replace mid-trip.

Customization Made Simple

Field-adjustable settings let you dial in exact voltages and battery profiles for flooded, gel, or AGM types. Pair it with sealed batteries for low-maintenance off-grid living, or tweak for lithium if your system evolves.

Pro Tip: Mount it in a shaded spot near the battery bank to keep internals cool, maximizing efficiency during hot afternoons when solar output peaks.

Why PWM Like the C35 Wins for Mid-Sized Systems

PWM controllers like the C35 excel in setups up to 35 amps (roughly 400-800W depending on voltage), offering cost savings over pricier MPPT units without sacrificing core performance. They're lighter, simpler to wire, and perfect when your panels match battery voltage closely—common in mobile or budget-conscious builds. Expect 95-98% efficiency, with the microprocessor optimizing every pulse for peak harvest.