SKU: 16336973654

Mastervolt Charge Mate Pro 40 - Electronics Charge Relay [83304002]

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Description

Mastervolt Charge Mate Pro 40 - Electronics Charge Relay [83304002]Charge Mate Pro 40 Electronics Charge Relay Current limited electronic charge relay with high efficiency and reverse current protection A secondary battery on board 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

Charge Mate Pro 40 - Electronics Charge Relay

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

A secondary battery on board 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 Charge Master 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 consist of a 40 Amp and a 90 Amp version, both suitable for charger or alternator applications.

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 on board and/or the need of prioritised or current limited charging.

Features

  • 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 A
  • High system reliability by prioritised charging of the main battery
  • Unidirectional which blocks return current under all circumstances
  • Prevents power dips of 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

  • Remote switch functions:  on, off, auto, start assist
  • Monitoring: LED (warnings and status indication)
  • Output current: limited to 40 A
  • Number of battery outlets: 2
  • Input voltage range: 9-32 V
  • Parallel configuration: yes
  • Battery voltage: automatic 12/24 V detection
  • Dimensions, hxwxd: 157 x 140 x 80 mm / 6.2" x 5.5" x 3.1"
  • Weight: 0.88 kg / 1.9 lb
  • Approvals: CE

Technical specifications

  • Connection possibilities: 3 x fast-on connectors (switch, ground and status) o switch: for an optional single pole ON-OFF-ON switch for remote operation o 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 Multi purpose contact, 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 low voltage drop of max 0.2 V)
  • Temperature range (ambient temp.): -40 °C to 60 °C -40 to 140 °F
  • Protection degree: IP65

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.


Owner's Manual (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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  • Delivery to the USA:
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  • 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]
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SKU: 16336973654

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These bed pillows provide good comfort and support for sleeping, with a nice balance of softness and structure. They hold their shape fairly well and work for both back and side sleeping positions. The overall feel is comfortable and helps improve sleep quality. Overall, they are reliable everyday pillows that offer good comfort and support.
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Reviewed in the United States on May 8, 2026
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Legal_Alien
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★★★★★ 5
Very comfortable. On the soft side.
Size: Queen / Standard, Color: White
Soft, but not too soft. I would actually give 4.5 stars. The pillow is a bit too long and bulky, wish it had a bit more support, but overall, great purchase considering the price. Hopefully it doesn't degrade after washing.
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Bee-Bee
Pawtucket, US
★★★★★ 5
Excellent pillows that are worth the cost
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These are wonderful. Completely relieved my back pain the first night I slept on them -– I put one underneath my back as I slept, and a weeklong terrible pain vanished overnight. Felt like sleeping on a cloud. As others have noted, they are neither too soft nor too firm…they’re really just right, and I think would make great guest room pillows since everyone would like them. These were definitely worth the money.
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JBaranow
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They came compressed into a small roll so I was wondering how they would do. BUT they fluffed up to incredible size and comfy feel. I am impressed so far!
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Reviewed in the United States on May 29, 2026
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Carol
New York, US
★★★★★ 5
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Size: Queen / Standard, Color: White
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