SKU: 15252291618

Mastervolt Charge Mate Pro 40 - Electronics Charge Relay

Sale price$212.40 Regular price$236.00
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Description

Mastervolt Charge Mate Pro 40 - Electronics Charge RelayCharge 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.
  • Except Preorder products are shipped in 48 hours.
  • 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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 15252291618

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Gabriel N.H.
Battle Creek, US
★★★★★ 3
This is more like a long cardigan sweater, than a coat.
Size: Small, Color: #2 Blackandwhite
This is more like a long cardigan sweater, than a coat. It doesn't have much structure & the pocket placement is too high for a coat. That being said, it's very soft & comfortable. As far as sizing goes, the sleeves run a bit long, but the coat, itself, runs a bit tight. I'm 5'10'' and a small fit me, but I wouldn't be able wear anything very thick under it & I'm thin. It's light & machine washable. I almost kept it to wear as a long sweater, but it looks like a coat ,so I sent it back. If you're very thin with long arms and don't mind the pockets being a bit high, then this could be a very stylish piece for you. Otherwise, I would pass.
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Reviewed in the United States on January 17, 2026
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Dev
Charlottesville, US
★★★★★ 5
i would definitely recommend. stick with your regular size or size up for a less slim fit
Size: Small, Color: Black
I usually wear a medium, I ordered a small based on reading the reviews. I am 150lbs 5’4”. this coat fits great for me personally. it’s not bulky, it’s not baggy. it is a slim fit jacket, definitely more on the slender side. when i raise my arms above my head , the sleeves do come up a bit. I would suggest sticking to your normal size or if you want a less slim fit with a tiny bit more room, sizing up wouldn’t be an issue. the coat is super soft and has some weight to it. i would recommend this jacket, it is warm and a nice piece for formal attire.
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Reviewed in the United States on February 18, 2026
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Daniel Ogunlowo
Phoenix, US
★★★★★ 5
Nice jacket
Size: Medium, Color: Grey 01
Nice jacket . Material exactly as described.
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Reviewed in the United States on February 3, 2026
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Isaac Waddy
San Leandro, US
★★★★★ 5
Value for money
Size: Large, Color: A-red
Exquisite; stylish.
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Reviewed in the United States on October 14, 2025
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Edward
Natrona Heights, US
★★★★★ 5
Black mens coat
I didn't expect such good quality from such an inexpensive black coat, stylish, neat, looks expensive, none of my friends believed that I bought it so cheaply! No pellets appeared after a year and a half of use
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Reviewed in the United States on March 15, 2025

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