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Rover Li 20A MPPT Solar Charge Controller (RNG-CTRL-RVR20)In library
Renogy

Rover Li 20A MPPT Solar Charge Controller (RNG-CTRL-RVR20)

Renogy Rover Li 20A is an MPPT solar charge controller for 12 V and 24 V systems with automatic voltage detection, 4-stage charging and support for lead-acid and lithium batteries. It accepts up to 95 V PV open-circuit voltage and 260 W of panels at 12 V (520 W at 24 V), and offers RS485 for remote monitoring.

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Power
240 W
PV input
up to 95 V
Output
12 V DC
!

Safety notes for this component

  • Fuse the battery cable with 25–30 A close to the battery.
  • Size the solar-side fuse at panel Isc × 1.56.
  • PV open-circuit voltage must stay below 95 V, including the cold-weather rise in Voc of series strings.
  • Use 12 AWG cable up to 3 m and 8 AWG for runs of 6–9 m.

Wiring it in

Current, fuse and cable size for the Rover Li 20A MPPT Solar Charge Controller (RNG-CTRL-RVR20) at full rated power.

Charger → battery

DC output · 12 V
Current at rated power
20 A
Fuse
25 A Blade (ATC/ATO)
Cable run (one way)CableVoltage drop
1 m4 mm² · 12 AWG1.5 %
2 m4 mm² · 12 AWG3 %
3 m6 mm² · 10 AWG3 %
5 m10 mm² · 8 AWG3 %
Other length or voltage? Open the wire gauge calculator →

Current is the rated power divided by the nominal voltage, so a charger can come out a little above its label rating. Copper cable at 20 °C, positive and negative conductor, at most 3 % voltage drop. The cable is always rated for the fuse that protects it, and the fuse is sized at 125 % of the current. If the manufacturer manual specifies a fuse or cable, follow the manual.

Technical data

Rated charge current20 A
System voltage12 V / 24 V auto-detect
Max PV open-circuit voltage95 V
Max PV input power260 W (12 V) / 520 W (24 V)
Self-consumption< 100 mA (12 V), < 58 mA (24 V)
EfficiencyMPPT tracking > 99 %, conversion ≤ 98 %
Enclosure / operating temperatureIP32, −35 to 45 °C
Size / weight210 × 151 × 68 mm, 1.4 kg
Max terminal size8 AWG / 10 mm²

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PV input
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Output
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Power
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PV input
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Output
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DCC30S 12V 30A DC-DC Charger with MPPT (RBC30D1S)
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Power
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Input
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Output
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12V 40A DC to DC Battery Charger (RBC40D1U)
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Power
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Input
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Output
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