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Redarc BCDC Alpha50 R battery manager at an angle with its sense module in front, the finned black case carrying the REDARC and BCDC Alpha50 R markings and the input icons down the sideEverything in the Alpha50 R box laid out: the battery manager itself, the sense module, an RJ45 network lead, a battery lead with red ring terminal and in-line fuse, a green sense lead with ring terminal, four mounting screws, a brass terminal bolt and a spare RJ45 plugEdge-on view of the Alpha50 R, the row of connector positions along the front face each marked with its own icon, between the cast end brackets

Redarc

BCDC Alpha50 R DC Battery Manager

BCDC12050R

The REDARC BCDC Alpha 50R (BCDC12050R) is a 12V 50A DC-DC battery charger with an integrated battery manager, for a 12V auxiliary battery bank. It combines the Alpha DC-DC charger, MPPT solar input, and a shunt-based battery management system in…

$1,499.00

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Important note

REDARC’s BCDC Alpha50 R is built with robust technology and designed for maximum efficiency, safety, and longevity. Compatible with most automotive batteries, including Lithium (LiFePO4), it integrates seamlessly with RedVision and TVMS products for complete system connectivity.

We accept
For 12V vehicles with a 12V auxiliary battery bank. Suitable for cars, trucks, RVs, 4WDs, caravans and boats. Compatible with vehicles that have low-surplus-current alternators, including hybrids. Our workshop hardwires an ignition trigger on smart-alternator vehicles and multi-charger setups. For a 24V system, use the Redarc BCDC2420 instead.

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50A ALPHA + BATTERY MANAGER

Alpha R — DC-DC + solar + full battery management system in one in-cabin unit.

REDARC APP CONTROL

Monitor charging, set the battery profile and view state-of-charge over Bluetooth.

INTEGRATED BATTERY MANAGEMENT

Shunt-based monitoring built in — no separate BMS purchase needed.

6 CHARGE PROFILES

AGM, gel, calcium, standard lead-acid, LiFePO4 and custom — covers every modern deep-cycle chemistry.

5 YEAR REDARC WARRANTY

Backed by 5 years direct from Redarc — the Alpha series carries the extended warranty. Repair or replacement in accordance with Redarc's warranty policy.

The REDARC BCDC Alpha 50R (BCDC12050R) is a 12V 50A DC-DC battery charger with an integrated battery manager, for a 12V auxiliary battery bank. It combines the Alpha DC-DC charger, MPPT solar input, and a shunt-based battery management system in one unit — no separate battery monitor required.

Monitor charging state, view state-of-charge, and set the battery profile through the Redarc app over Bluetooth. Six charge profiles cover AGM, gel, calcium, standard lead-acid, LiFePO4 lithium and custom setups. Green Power Priority uses solar first to reduce alternator load.

Smart alternator vehicles and multi-charger setups. Our workshop always hardwires an ignition trigger to the charger on late-model vehicles with stop-start or variable-voltage smart alternators, and on any build with more than one BCDC (for example a charger in the vehicle plus a second charger in the caravan) so all chargers only run when the vehicle is running. Ask us if you're unsure whether your vehicle needs this.

Output is 12V. For a 24V system, use the Redarc BCDC2420 instead.

Rated for in-cabin installation, near the auxiliary battery bank so the shunt has a short lead. Backed by a 5 year Redarc warranty.

  • 50A charging from DC and solar power sources
  • Supports all common automotive battery types including heated and Lithium batteries
  • Pushbutton interface and screw connections for easy installation
  • Can use excess solar power to charge the start battery
  • Flat start battery recovery in 15 minutes (manual or remote)
  • Remote monitoring and control via RedVision app (Bluetooth)
  • Input current limiting protects vehicle alternators (ideal for hybrids/electric vehicles)
  • Over-the-air updates for future-proof charging

Start Battery Input Voltage Range: 9–32V

Solar Input Voltage Range: 9–48V

Nominal Current Rating: 50A

Operating Temperature: –40°C to 85°C

Weight: 0.96 kg


Dimensions (HxWxD): 44 x 164 x 146 mm

Output Voltage: 12V

Max Rated Output Current: 50A

Warranty: 2 Years

Length: 146mm

Width: 164mm

Height: 44mm

Weight: 0.96kg

Source: manufacturer-verified

Everything this install needs

0 of 0 in the box


Simple, DIY-friendly installation with pushbutton interface and screw terminal connections. No soldering or complicated wiring required. Compatible mounting brackets available to suit a variety of installation locations.

BCDC Alpha50 R Install Guide



For 12V vehicles with a 12V auxiliary battery bank. Suitable for cars, trucks, RVs, 4WDs, caravans and boats. Compatible with vehicles that have low-surplus-current alternators, including hybrids. Our workshop hardwires an ignition trigger on smart-alternator vehicles and multi-charger setups. For a 24V system, use the Redarc BCDC2420 instead.

Q: What does the R mean?
A: R = integrated battery management. The Alpha 50R combines the Alpha DC-DC charger with a shunt-based battery manager in one unit.

Q: Do I still need a separate battery monitor?
A: No — the Alpha 50R has the shunt built in and reports state-of-charge in the Redarc app.

Q: Which chemistries does it support?
A: 6 profiles including LiFePO4.

Q: Where does it mount?
A: In-cabin, near the auxiliary battery bank so the shunt has a short lead.

Q: What cable size?
A: 4 B&S is our workshop preference on 50A. Redarc's install guide often specifies larger — 4 B&S covers the runs typical of 4WD and caravan installs. Do not go smaller than 6 B&S.

Q: How long is the warranty?
A: 5 years, direct from Redarc.

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