SKU: 43198009014

Mastervolt Charge Mate Pro 90 [83309002]

Sale price$132.30 Regular price$147.00
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Description

Mastervolt Charge Mate Pro 90 [83309002]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

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: 43198009014

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Betty Griffitts
Draper, US
★★★★★ 5
Easy to order, fast delivery, great quality for the price.
Color: White, Size: Large
My husband had been looking for a white dress shirt, in oxford material off and on for two years. Most dress shirts are so big on the sides because we usually have to fit about a 17 1/2" neck. Started looking at Amazon's clothing section. Saw the COOFANDY Men's Long Sleeve Regular Fit Button Down Oxford Shirt, and ordered by Large instead of sleeve length, neck size, etc. I ordered as a surprise hoping it would work. When the COOFANDY shirt arrived, I had him try it on. Perfect fit, nice oxford material. Washed and ironed before he wore it to church. He loved it! I have now ordered three more COOFANDY men's long sleeve shirts. Hubby now wants me to see if they have short sleeve shirts! Great buy at $25.00.
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Reviewed in the United States on February 21, 2026
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Steve Howe
Port Orchard, US
★★★★★ 4
Can beat the price, but a little tight
Color: Grey Blue, Size: 4X-Large
I usually order 3x shirts,but sometimes 4x on dress shirts.This shirt is 4x and still a little tight.One would be wise to order a size higher.Looks nice.
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Reviewed in the United States on March 23, 2026
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DeWayne H.
Grantham, US
★★★★★ 5
better than I expected
Color: Khaki, Size: Large
Arrived on time. Looks more expensive than cost, fit was true to size, and packaging was neat and compact.
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Reviewed in the United States on May 27, 2026
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Gam
Charlottesville, US
★★★★★ 5
True size, color, accuracy, nice comfortable fabric
Coofandy I have several products from them. All of them are of good quality and look higher and.
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Reviewed in the United States on May 14, 2026
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Peter Petropoulos
Massapequa, US
★★★★★ 5
These are great shirts
Color: White, Size: XX-Large
These are very good shirts. Good quality, good material. The size descriptions are accurate, so they're a great fit. The stitching and buttons reflect good quality, the buttons are good and secure, too. I highly recommend these shirts.
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Reviewed in the United States on May 12, 2026

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