SKU: 21229733071

Mastervolt Charge Mate Pro 90

Sale price$227.25 Regular price$252.50
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Description

Mastervolt Charge Mate Pro 90Charge Mate Pro 90 Current limited electronic charge relay with high efficiency and reverse current protection A secondary battery onboard requires a dedicated charging solution. The Charge Mate Pro makes it possible to distribute the charger or alternator current effectively between two battery banks such as a starter and a service battery. The Charge Mate Pro connects both batteries during charging and keeps them isolated when discharging. This

Charge Mate Pro 90

Current limited electronic charge relay with high efficiency and reverse current protection

A secondary battery onboard requires a dedicated charging solution. The Charge Mate Pro makes it possible to distribute the charger or alternator current effectively between two battery banks such as a starter and a service battery. The Charge Mate Pro connects both batteries during charging and keeps them isolated when discharging. This significantly reduces the risk of a flat starter battery for example.

The Charge Mate Pro offers an additional advantage over mechanical charge relays, by limiting the charge current to the second battery. The primary battery, like a starter battery, is therefore charged with priority. The return current is automatically blocked even when the secondary battery has a higher voltage. An emergency start function is possible by connecting an optional bypass switch to the ChargeMaster Pro.

A marine application example is the connection of a bow thruster battery to a service battery. The Charge Mate Pro ensures that the service battery is always charged with priority. The blocking of the return current from the bow thruster battery guarantees that the bow battery remains charged while the current limiting also prevents power dips of the onboard electrical network.

The Charge Mate Pro series consists of a 40 Amp and a 90 Amp version, both suitable for charger or alternator applications. The Charge Mate Pro 90 ensures a higher charge current for example when charging Lithium-Ion batteries. It is also perfectly suitable for large automotive alternators up to 180 A and can be used in parallel operation with a 225 Amp alternator to fulfill even higher continuous power demands of your equipment on board.

Charge Mate Pro: for controlled charging from a single source.

Applications:

  • Leisure and professional marine and mobile applications. An effective solution for high power demand onboard and/or the need for prioritized or current limited charging.

Features:

  • Charges two battery banks from a single source.
  • Electronic charge coupling with very low voltage drop.
  • Makes effective dual charging possible.
  • Suitable for all battery types, including Lithium-Ion.
  • Charge current secondary battery limited to 40 or 90 A.
  • High system reliability by prioritizing charging of the main battery.
  • Unidirectional which blocks return current under all circumstances.
  • Prevents power dips in the onboard electrical network.
  • Suitable for all kinds of chargers and alternators.
  • Monitoring with LED status indication.
  • IP65 electronics in a corrosion-resistant casing with aluminum heat sinks.
  • Fast and easy installation.

General Specifications:

  • Monitoring: LED (warnings and status indication)
  • Output current: limited to 90 A; > 25 °C derating power
  • Number of battery outlets: 2
  • Input voltage range: 9-32 V
  • Parallel configuration: Yes
  • Battery voltage: Automatic 12/24 V detection
  • Remote switch functions: On, off, auto, start to assist
  • Dimensions, hxwxd: 157 x 140 x 80 mm/6.2 x 5.5 x 3.1 inch
  • Weight: 0.88 kg/1.9 lb
  • Compliance: CE

Technical Specifications:

  • Connection possibilities: 3 x faston connectors (switch, ground, and status) • switch: for an optional single-pole ON-OFF-ON switch for remote operation • status: for an optional LED indicator
  • Power consumption: Switch open: < 1 mA at 12/24 V DC
  • Battery types: All types (Lithium-Ion protection via Multipurpose Contact Output, product code 77030500)
  • Switch on voltage: 13.5 V (12 V) / 27 V (24 V)
  • Switch on delay: 5 sec
  • Switch off voltage: 12.75 V (12 V) / 25.5 V (24 V)
  • Switch off delay: 2.5 sec
  • Relay: Electronically (MOSFETs with a low voltage drop of max 0.2 V)
  • Temperature range (ambient temp.): -40 °C to 60 °C/-40 °F to 140 °F
  • Protection degree: IP65

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

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: 21229733071

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piper
Lexington, US
★★★★★ 4
They're ok.
Size: 36"W, 2P, Color: White
The shelves are good but the wall brackets need more varied hole spacing, and the holes on the shelves for the bracket arms are loose so even screwed in they move a little bit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 29, 2026
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Cynthia De La Garza
Phoenix, US
★★★★★ 5
Super reliable shelves
Size: 40"W, 2P, Color: White
Shelves are 10/10 came packaged very well. The shelves are very sturdy and the installation was a breeze.
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Reviewed in the United States on March 30, 2026
J
J Wallace
Battle Creek, US
★★★★★ 5
Solid, easy to install floating shelves
Size: 20"W, 2P, Color: White
I really like the ease of installation of this set of floating shelves. The only requirement is that the bracket is mounted on the studs not just to drywall, or that appropriate drywall anchors are used. Once the brackets are secure, the shelves go in like a sleeve and you have yourself an awesome floating shelf. Good quality materials and fair value for the money. Great find for DIY.
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Reviewed in the United States on April 23, 2026
J
Jefferson
Waukegan, US
★★★★★ 5
Eye catching display shelves
Size: 36"W, 2P, Color: White
Sturdy , easy to put up floating shelves. Great display shelf for travel treasures.
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Reviewed in the United States on March 22, 2026
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Verified Purchase
Rocco DelGiudice
Omaha, US
★★★★★ 4
Nice shelves, they go well with our dark on light decor
Size: 20"W, 2P, Color: Black
Nice shelves, they went well with our dark on light decor. Fairly easy to install. They are not scratch resistant, so be gentle. I have a few decor item on the shelves with no sagging.
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Reviewed in the United States on March 20, 2026

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