Renogy Rover Li 20A MPPT Solar Charge Controller

The Renogy Rover Li 20A MPPT Solar Charge Controller Charges 12V and 24V Batteries From Up to 520W of Solar

The Renogy Rover Li 20A MPPT Solar Charge Controller is a compact 20 A controller for off-grid solar systems. It detects 12V and 24V systems for non-lithium batteries, supports lithium batteries with a manual voltage setting, and has an RS485 port for Bluetooth monitoring.

It fits smaller arrays on RVs, vans and cabins. Renogy rates it for up to 260 W of solar on a 12V battery and 520 W on a 24V battery, with solar input up to 100 V.

Renogy Rover Li 20A MPPT Solar Charge Controller Features

Automatic 12V and 24V Detection

Connect the battery and the controller detects a 12V or 24V system for non-lithium batteries. Lithium batteries need a manual voltage setting. It works with AGM, sealed, flooded, gel, lithium and user-defined battery types.

RS485 Port for Bluetooth Monitoring

Add the Renogy BT-2 Bluetooth module to the RS485 port and pair it with the Renogy DC Home app to watch charging data and change settings from your phone. One option includes the BT-2. The Controller Only option does not.

MPPT Tracking Above 99%

The controller follows the array's maximum power point as sunlight and temperature change. Renogy rates tracking efficiency above 99% and conversion efficiency up to 98%.

Four-Stage Charging and Lithium Activation

Lead-acid batteries charge in bulk, boost and float, with equalization available. Lithium batteries charge in bulk and boost. If a lithium battery's protection has shut it down, the controller can send a small current to wake it.

DC Load Terminals With Timer Control

Connect a DC load of 20 A or less to the load terminals. Renogy lists Auto On/Off, Timer, Manual, Test and Always On modes.

Protection and Heat Control

Electronic protection covers reverse polarity, overcharging, over-discharging, overload, short circuit and reverse current. The included temperature sensor lets the controller adjust charging to the battery.

Real-World Applications

RVs and vans. Charge a 12V house battery from a rooftop array and run a small DC load from the load terminals.

Cabins and sheds. Keep a 12V or 24V battery bank charged from a modest array.

Boats and camping setups. Charge a small house battery on a boat or camping rig. Renogy says a qualified electrician should install a controller on a boat.

Practical Comparison

Rover Li 20A Versus a PWM Controller

An MPPT controller converts higher panel voltage into extra charge current at the battery, so panels do not have to match battery voltage. A PWM controller passes panel output straight through.

Controller Only Versus With Bluetooth Module

Both options use the same 20 A controller, temperature sensor and brackets. The Bluetooth option adds a BT-2 module, which links the RS485 port to the DC Home app.

Buyer Guidance

Match the Array to the Controller

Stay within the solar input limits Renogy lists. Check your string's open circuit voltage (Voc) against the 100 V limit before wiring, and connect the battery before the solar panels.

Fuses and Wire Size

For the battery fuse, Renogy's manual recommends 25 A to 30 A for this model. Renogy recommends a solar panel fuse sized at the array's total amps times 1.56. For solar input and battery output, the manual recommends 12 AWG for runs of 0 to 10 ft, 10 AWG for 11 to 20 ft and 8 AWG for 21 to 30 ft. Fuses on both the input and output sides are recommended.

This May Be A Good Fit If

• You have a small to mid-size array on a 12V or 24V battery
• You want a DC load output with timer control
• You use lithium batteries and want a wake-up function
• You want optional Bluetooth monitoring in the DC Home app

Common Questions

Does It Detect 24V Lithium Batteries Automatically?

No. Automatic detection applies to non-lithium batteries. For lithium, set the battery type to Li and set the nominal voltage yourself. Renogy says lithium activation needs at least 16 V of solar input on a 12V system and at least 30 V on a 24V system.

Which Bluetooth Module Does It Use?

The RS485 port works with the Renogy BT-2 Bluetooth module. The With Bluetooth Module option includes it, and the Controller Only option does not.

How Many Watts of Solar Can It Handle?

Renogy rates the maximum combined solar input at 260 W for a 12V battery system and 520 W for a 24V system, with panel voltage up to 100 V.

What's Included

• 1 x Rover Li 20A MPPT Solar Charge Controller
• 1 x Remote Temperature Sensor
• 4 x Mounting Brackets
• 4 x Mounting Bracket Screws
• 1 x Quick Guide

The Controller Only option includes the items above. The With Bluetooth Module option adds 1 x Renogy BT-2 Bluetooth Module.

Compact Solar Charging for Small Systems

The Renogy Rover Li 20A MPPT Solar Charge Controller gives 12V and 24V systems MPPT charging, a DC load output and optional Bluetooth monitoring in a small housing. Questions about sizing or options? The Outbound Power team is happy to help.

Renogy Rover Li 20A MPPT Solar Charge Controller Manuals

User Manual

Data Sheet