SKU: 51625144718

Mastervolt Battery Mate 2503 IG Isolator - 200 Amp, 3 Bank

Sale price$357.30 Regular price$397.00
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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Description

Mastervolt Battery Mate 2503 IG Isolator - 200 Amp, 3 BankBattery Mate 2503 IG Isolator 200 Amp, 3 Bank The Battery Mate is the ultimate solution for charging several batteries simultaneously and 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

Battery Mate 2503 IG Isolator - 200 Amp, 3 Bank

The Battery Mate is the ultimate solution for charging several batteries simultaneously and 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.

While battery isolators are conventional diode splitters, the Battery Mate's technology is electronic and includes mosfets (transistors). Its components compensate for variations in voltage and ensure that charging continues at the right voltage level, even with several battery banks. The input side on the Battery Mate is connected to the alternator and/or battery charger, while two batteries are connected to the output side. The Battery Mate is easy to install on a DIN rail (industry standard).The Mastervolt Battery Mate can be used in any application even if the standard alternator need external excitation or voltage sensing. In this case the additional IG contact can be connected.

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Specifications:

  • Continuous Amperage: 200
  • Box Dimensions: 4"H x 6"W x 9"L WT: 2.8 lbs
  • UPC: 816882021053

Quick Guide (pdf)
Owner's Manual (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 51625144718

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4.5 ★★★★★
Based on 24 reviews
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C
Verified Purchase
Connor Pack
Fort Morgan, US
★★★★★ 4
Good, except for release button placement
This works well. It’s easy to install, charges your phone well, and mounts to the vent securely. Simply set your phone on it and squeeze the arms to grip it. I like that it’s manual, so you can open and close it even without power. However, the release button is centered on the back, which means that to press/squeeze it, you have to put your thumb right on the middle of your phone screen. It can interfere with whatever I’m using my phone for at the time or just wake it up unnecessarily. Not a huge deal, but it would be great if they moved the button to the side so you can squeeze side to side to release the grip, rather than front to back.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 22, 2025
T
Verified Purchase
Thisisarealreview
Battle Creek, US
★★★★★ 5
Great product if you’d like to talk and keep your phone charged at the same time
I really really like these. I have two one in my truck one in my car I like it because I can put my headphones in while it’s being charged so I can talk on long drives like four hour drives and the battery never goes dead and I have the ability to utilize the plug-in. I don’t like Wi-Fi. I have a tendency to lose them so I like old-fashioned wire it just is my preference.
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Reviewed in the United States on March 22, 2026
M
Verified Purchase
Mt
Dallas, US
★★★★★ 5
Muy buena calidad lo llevo usando por mucho tiempo y aún funciona.
Carga rápido y sostiene muy bien el celular
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Reviewed in the United States on May 13, 2026
J
Verified Purchase
John P.
Lowell, US
★★★★★ 5
Great Charger
Great wireless car charger holder. No more fidgeting for phone
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Reviewed in the United States on January 30, 2026
J
Verified Purchase
J LEE
Phoenix, US
★★★★★ 4
Good
Good product
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Reviewed in the United States on February 18, 2026

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