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Ctek M 300 Marine Actual product image
CHF 312.–

Ctek M 300 Marine


Key specifications

Suitable battery technologyLead-Acid WET, Lead Acid Gel, AGM
Charging programmesdesulphation, Chargeability Test, reconditioning, maintenance mode

General information

Manufacturer Ctek
Product type Car battery chargers
Item number5662273
Manufacturer no.56-298

Application range

Suitable vehicles


Boating the leisurely activity of traveling by boat typically refers to the recreational use of boats whether power boats, sail boats, or yachts (large vessels), focused on the travel itself, as well as sports activities, such as fishing or waterskiing. Boating is an extremely popular activity, and there are millions of boaters worldwide.

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Suitable battery technology
Lead-Acid WET
Lead Acid Gel

Battery Charger Features

Voltage 12V
Charging current at 12V
25 A
Battery capacity at 12V
40 - 500 Ah

Power supply


Power supply

All power supply related details.

Power supply
Electrical connection
Input voltage
220 - 240 V


Protection class
Protection class II

Protection class II

Equipment with protection class II has reinforced or double insulation between the mains circuit and the output voltage or metal housing (VDE 0100 part 410, 412.1) and usually has no connection to the protective conductor. This protective measure is also called protective insulation (safe electrical isolation). Even if they have electrically conductive surfaces, they are protected against contact with live parts by reinforced insulation. Mobile devices of protection class II usually do not have a plug with earthing contact; plugs without earthing contact are used for connection; in Germany, these are contour plugs - plug designs that look similar to a shock-proof plug for high currents. So-called Euro plugs are used for small currents (up to 2.5 A). If a cable with protective conductor is used, it must not be connected to the housing and must be treated as an active conductor.

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Protection type (IP code)
Safety function
Reverse polarity
Short circuit

Product dimensions

23.50 cm
13 cm
6.50 cm
2200 g


Charging programmes
Chargeability Test
maintenance mode

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Brochure | 1.93 MB | German

Returns and warranty

Warranty 24 month Bring-in
30-day right of return

30-day right of return

Unfortunately, we cannot accept a product if it is damaged, incomplete or missing its original packaging.

Returns and warranty

Please use our simplified returns and warranty process to return a product or register a warranty case. Returns and warranty

Please use our simplified process, which shows the correct warranty period and takes into account any warranty extensions you have purchased. This ensures that your return or case can be processed as quickly and easily as possible.


Mail delivery

Expected delivery time: approx. 7 – 9 days
Currently 2 piece(s) in stock at the supplier


All locations

Expected delivery time: approx. 7 – 9 days
Currently 2 piece(s) in stock at the supplier

If ordered immediately. Information subject to change.

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Product ratings

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The 1 most useful ratings

User crazyman
M 300 Marine

Tolles Ladegerät

Dank der Digitec Aktion konnte ich das Ctek M300 für 149.- ergattern und nutze es im PKW Bereich. Eigentlich ist die M-Serie für den martitimen Einsatz gedacht, aber mit zusätzlichen Batterieklemmen (nicht im Lieferumfang!) ebenfalls komfortabel für Autos. Wie bei allen CTEK Produkten gibt es eigentlich fast nichts zu bemängeln. Nur der Originalpreis von 459.- ist sehr hoch, dafür würde ich dann doch lieber zum CTEK MXS25 mit Supply-Modus tendieren. Das M300 bietet dafür einen Nachtmodus, bei dem es lautlos mit reduzierter Leistung seine Dienste verrichtet.
Wirklich toll ist die vier (4!) Meter Lange Abgangsleitung vom Ladegerät zur Batterie.


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