Victron

Victron Argo Diode Battery Isolator 120A (2 Outputs)

£87.60
Tax included.
ARG120201020R
Diode battery isolator charging two banks from one alternator or charger while keeping them isolated. Schottky diodes give a low voltage drop, with a compensation diode and an alternator energize input. Suits 12 V and 24 V systems, rated 120 A.

Available for collection or delivery in ~2 days

Pickup available at Mercury Yacht Harbour

Usually ready in 2-4 days

Description

The Victron Argo Diode Battery Isolator 120A charges two independent battery banks from a single alternator or charger while keeping them fully isolated from one another. Discharging one bank, such as a domestic service battery, can never flatten the other, so the engine start battery is always protected and ready.

Isolation is achieved with Schottky diodes, giving a low forward voltage drop of roughly 0.3 V at light load and about 0.45 V at the rated output. A fitted compensation diode lets you nudge the alternator output voltage up slightly to offset this drop, and an alternator energize input supplies B+ when the engine run switch is closed so machine-sensing alternators start charging reliably.

The isolator adjusts automatically to 12 V or 24 V systems and requires no control wiring or maintenance. Heavy-duty M8 stud connections and a compact steel enclosure suit marine, motorhome and off-grid installations where two banks must share one higher-output charge source.

PRODUCT DETAILS

  • Charges two isolated battery banks from a single alternator or charger
  • Prevents cross-discharge between service and engine start batteries
  • Low-loss Schottky diodes, approximately 0.3 V drop at low current and 0.45 V at rated output
  • Compensation diode to raise alternator voltage and offset the diode drop
  • Alternator energize input powers B+ when the engine run switch is closed
  • Automatically suits 12 V and 24 V systems
  • Heavy-duty M8 stud connections, no maintenance required

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Key specifications

Maximum charge current120 A
Number of outputs2
Nominal battery voltage12 V and 24 V
TechnologySchottky diode isolator

Performance

Maximum alternator current120 A
Voltage dropApproximately 0.3 V at low current, 0.45 V at rated output
Compensation diodeYes
Alternator energize inputYes

Physical

ConnectionM8 studs
Compensation diode and energize connection6.3 mm Faston
Dimensions (h x w x d)60 x 120 x 115 mm
Weight0.8 kg

Conformance

Warranty5 years

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