Renogy New Edition Voyager 20A PWM Waterproof Solar Charge Controller

The Renogy New Edition Voyager 20A is a PWM solar charge controller rated at 20 amps and IP67 for use in outdoor environments exposed to water spray, rain, and condensation. It supports 12V and 24V off-grid systems and accepts four battery chemistries: Sealed/AGM, Gel, Flooded, and Lithium Iron Phosphate. The controller weighs 0.55 lb and measures 6.08 × 3.83 × 1.40 inches, fitting installations where space is limited.

4-Stage PWM Charging Protects Battery Health

The Voyager 20A uses PWM technology to run a four-stage charge cycle: Bulk, Absorption, Float, and Equalization. Bulk brings the battery to roughly 75–80% capacity quickly; Absorption completes the charge gradually; Float holds the battery at full charge without overcharging; and Equalization, run automatically every 28 days, stirs the electrolyte and balances cell voltages in battery types that benefit from it. Running through these stages rather than applying a fixed voltage means the controller responds to what the battery actually needs at each point in the cycle, reducing the risk of overcharge damage and undercharge sulfation over time.

IP67 Rating Keeps the Controller Running in Wet Conditions

An IP67 protection rating means the Voyager 20A remains fully operational when exposed to water spray and rain, making it suitable for mounting locations that are not fully sheltered, including a truck bed rack, an open trailer bay, or a boat. The controller does not require a weatherproof enclosure of its own, which simplifies installation in builds where interior space is at a premium.

Compact Size and Low Self-Consumption Suit Space-Constrained Builds

At 6.08 × 3.83 × 1.40 inches and 0.55 lb, the Voyager 20A fits in tight mounting locations inside vans, camper trailers, and overlanding rigs. Self-consumption in a 12V system measures 0.24W, so the controller draws very little from the battery bank it is managing. A built-in LCD displays real-time system data and error codes, and a remote temperature sensor port accepts the optional RTSVOY-US sensor (sold separately) for real-time battery temperature measurement and automatic temperature compensation at -3mV/°C/2V, keeping charge voltage accurate as ambient temperature changes.

Features

• 20A rated charge current: handles up to 260W of PV input on a 12V system or 520W on a 24V system
• IP67 waterproof: operates in water spray and rain without a separate enclosure
• 4-stage PWM charging: Bulk, Absorption, Float, and Equalization stages for battery protection
• Four battery type support: Sealed/AGM, Gel, Flooded, and Lithium Iron Phosphate (lithium requires manual voltage setup)
• Common positive ground: 2-pin terminals accept 20–6 AWG cable, max cable size 6 AWG
• Remote temperature sensor port: compatible with optional RTSVOY-US sensor (22AWG, 10 ft, sold separately)

Specifications

Who This Is For and Isn't

The Voyager 20A suits builders of 12V or 24V off-grid solar systems in overlanding rigs, vans, RVs, boats, and cabins who need a compact, weather-resistant charge controller that works with Sealed/AGM, Gel, Flooded, or Lithium Iron Phosphate battery banks. Its IP67 rating makes it a practical choice for installations that cannot guarantee a fully dry mounting environment.

The Voyager 20A does not auto-detect system voltage when connected to a lithium battery bank; voltage and battery type must be set manually before use, or an over-discharged lithium battery may not activate. The controller must not be installed in a sealed enclosure with flooded batteries, as gas accumulation creates an explosion risk. Solar panels should be wired in parallel, not in series, with a PWM controller to maintain proper PV output voltage. No communication port is available on this controller.

Common Questions

Does the Voyager 20A automatically detect whether the system is 12V or 24V?

The Voyager 20A solar charge controller automatically detects system voltage when connected to a Gel, AGM, or Flooded battery bank. When used with a lithium battery bank, system voltage and battery type must be set manually before charging begins; the auto-detection feature does not apply to lithium batteries.

Which battery chemistries does the Voyager 20A support?

The Voyager 20A charge controller supports four battery types: Sealed/AGM, Gel, Flooded, and Lithium Iron Phosphate. Gel, AGM, and Flooded batteries use automatic voltage detection. Lithium Iron Phosphate batteries require the operator to manually set the correct battery type and system voltage on the controller before use.

What does the IP67 rating mean for installation locations?

IP67 means the Voyager 20A charge controller is sealed against water spray, rain, and condensation and remains fully operational in those conditions. The controller does not require a separate weatherproof enclosure, which gives more flexibility in choosing a mounting location in a truck, trailer, boat, or outdoor structure.

What are the four charging stages and what does each one do?

The Voyager 20A runs Bulk charging first, bringing the battery to roughly 75–80% capacity; then Absorption, which completes the charge gradually; then Float, which holds the battery at full charge without overcharging; and finally Equalization, run automatically every 28 days, which raises voltage briefly to balance cell voltages and stir electrolyte in battery types that benefit from it.

Does the Voyager 20A include a temperature sensor?

The Voyager 20A charge controller includes a remote temperature sensor port but does not include the temperature sensor itself. The compatible sensor is the Renogy RTSVOY-US (22AWG, 10 ft), sold separately. When connected, the sensor feeds real-time battery temperature data to the controller, which uses it for automatic temperature compensation at -3mV/°C/2V.