Victron Energy BCD000802000 BCD 802 2 Batteries 80A (Combiner Diode)

Victron Energy BCD 802 2 Batteries 80A (Combiner Diode)

The Victron BCD 802 (SKU: BCD000802000) is an 80A diode battery combiner engineered to guarantee uninterrupted DC power to mission-critical equipment. Using Schottky diode technology, it allows two or more DC power sources to operate in parallel — so if one source fails, your load keeps running without interruption.

Designed for marine, commercial, automotive, and off-grid applications, the BCD 802 is the trusted solution where continuous power isn't optional. Whether you're protecting an electronic engine management system, critical navigation electronics, or an emergency communications setup, this combiner delivers rock-solid redundancy with minimal voltage loss.

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Key Specifications

• Rated Output Current: 80A continuous
• Number of DC Inputs: 2 (expandable in parallel configurations)
• Diode Type: Schottky diodes (low forward voltage drop)
• Voltage Drop at Low Current: approximately 0.3V
• Voltage Drop at Rated Output (80A): approximately 0.45V
• Brand: Victron Energy
• SKU / Part Number: BCD000802000
• Model: BCD 802

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Features & Benefits

• Dual DC source input — connect two independent battery banks or charging sources to supply a single critical load; neither source interferes with the other
• Automatic failover, zero intervention — if one DC source drops out, the other takes over instantly with no switching delay and no manual action required
• Schottky diode technology — delivers a low forward voltage drop (~0.3V at light loads, ~0.45V at full 80A) compared to standard diodes, reducing energy waste and heat
• Protects mission-critical electronics — purpose-built for electronic engine control systems, navigation equipment, comms gear, and any load where a power interruption is unacceptable
• Scalable parallel architecture — multiple combiners can be used together to expand input sources beyond two, suiting larger or more complex DC systems
• Trusted Victron engineering — Victron Energy is relied on across Australian marine, 4WD, and commercial fleets for its robust, field-proven power management products

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Technical Specs

• Rated continuous current: 80A
• Number of inputs: 2
• Diode technology: Schottky
• Voltage drop (low load): ~0.3V
• Voltage drop (full load / 80A): ~0.45V
• SKU: BCD000802000
• Model: BCD 802
• Brand: Victron Energy
• Dimensions: Not specified
• Weight: Not specified
• IP Rating: Not specified
• Operating voltage range: Not specified — refer to Victron product datasheet

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Compatible With

• Dual battery systems in 4WDs, camper trailers, and caravans requiring power redundancy
• Marine vessels with twin battery banks and mission-critical electronics (chartplotters, VHF, engine ECU)
• Commercial vehicles with electronic engine control units (ECUs) requiring uninterrupted supply
• Off-grid and hybrid power systems with multiple DC charging sources (solar, alternator, shore power)
• Victron Energy battery chargers, DC-DC converters, and Battery Management Systems (BMS)
• Any application pairing a starter battery and auxiliary battery to a shared critical load

Frequently Asked Questions

What does the Victron BCD 802 actually do?

It connects two DC power sources in parallel to a single critical load. If one source fails, the other automatically continues supplying power — with no interruption and no manual switching required.

Is 80A enough for my application?

The BCD 802 handles up to 80A continuous output. Add up the current draw of all connected critical loads; if total demand exceeds 80A, you'll need a higher-rated combiner or multiple units.

Can I use more than two input sources with this combiner?

Yes. Multiple BCD units can be combined in parallel configurations to accommodate more than two DC sources, making it suitable for larger or more complex power systems.

How much voltage does the BCD 802 drop across the diodes?

Schottky diodes keep the drop low — approximately 0.3V at light loads and approximately 0.45V at the full 80A rated output. This is significantly lower than standard silicon diodes.

Does this require professional installation?

Installation should be carried out by a qualified auto electrician or marine electrician, especially in engine management or safety-critical applications. Always refer to the Victron Energy installation documentation before wiring.