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Battery Mate 2503 IG – Electronic Battery Isolator w/ 3 Battery Outlets
Battery Mate 2503 IG – Electronic Battery Isolator w/ 3 Battery Outlets

Battery Mate 2503 IG – Electronic Battery Isolator w/ 3 Battery Outlets

€ 356,00 (vat incl.)

€ 289,43 (vat not incl.)

Manufacturer: Mastervolt

Part Number: 83125035

Our Ref.: 109755

Battery Mate 2503 IG is an electronic battery isolator from Mastervolt that divides the charge current between 3 batteries with no energy loss.

Onboard systems usually consist of two or more batteries that function independently when powering the 12, 24 or 48 V consumers. These batteries require independent charging with reliable battery isolators or battery combiners.

While BI battery isolators are conventional diode splitters, the Battery Mate’s technology is electronic and includes mosfets (transistors). Its components compensate for the voltage drop and ensure that charging continues at the right voltage level, even with several battery banks.

The Battery Mate is compatible with any type of alternator/battery charger, in both existing and new systems. As the voltage loss between the alternator and battery is negligible, the Battery Mate performs far better than conventional battery isolators. This ensures fast and complete charging of your batteries without having to make additional adjustments to the alternator.

Charging two or three batteries at high capacity
The Battery Mate is most suitable for charging multiple batteries, possibly with various brands of alternators, even if their charge voltage cannot be adjusted. It can charge three batteries with a very high yield and without voltage loss.

This model is suitable for alternators with a maximum charge current of 250 amp.

Clear monitoring
Safety guaranteed: The Battery Mate LED display indicates whether the power input is active.

Robust and durable
Completely corrosion-proof material with aluminium heat sinks. The electronic components are encased in synthetic materials, the BI models have molded diode splitters.

Fast installation
The synthetic end plates feature connection lugs, the solid bolt connections with nuts and locking rings ensure easy installation.



  • Number of battery outlets: 3
  • Dimensions, hxwxd: 207 x 140 x 80 mm
  • Weight: 1 kg


  • Max. output battery charger: 200 A
  • Max. output alternator: 250 A
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