CTEK M300 12V 25A marine battery charger with charging lead
CTEK M300 12V 25A marine battery charger with charging lead
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Discontinued

CTEK M300 12V 25A Marine Battery Charger and Maintainer

SKU: M300
5.0 (2)

No Longer Available. Please contact us for recommendations or alternatives. (02) 4257 2636

Shipping information

Australia wide flat rate shipping is $15.95. Larger or heavier items may cost more; we will confirm when your order is processed. In stock items are dispatched within 1 to 2 business days. Report transit damage within 24 hours with photos so we can lodge a freight claim.

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Product features

Quick answer

The CTEK M300 charges and then maintains 12V lead acid boat batteries from 40 to 500Ah at up to 25A.

Boat batteries sit flat for weeks between trips. It works over eight steps and adjusts for temperature, which matters in a hot hull.

Problems it solves

  • Flat batteries after the boat has been idle. Maintenance mode keeps them topped up.
  • Deeply drained banks. Recond mode helps recover them.
  • Noise on overnight stays. Night mode runs the charger quietly.

Specifications

  • Voltage: 12V lead acid
  • Charge current: 25A max
  • Charge cycle: eight step, automatic
  • Battery capacity: 40 to 500Ah
  • Modes: normal, Recond, Night
  • Rating: IP44
  • Temperature range: minus 20 to plus 50 degrees
  • Lead: 4 m with eyelet terminals

Fitment and compatibility

Suits 12V lead acid banks from 40 to 500Ah. Check the charger has a well ventilated, protected spot near a 240V outlet.

What is in the box

One CTEK M300 charger with a 4 metre charging lead finished in eyelet terminals.

Install notes

Bolt the eyelets to the battery terminals, positive first, then mount the charger where spray cannot reach it. Use Recond about once a year.

Warranty

This comes with the manufacturer's warranty through the Australian distributor. See the manufacturer's terms for details, plus our guarantees under the Australian Consumer Law.

FAQ about the M300

Will the M300 suit a 100Ah AGM bank?

Yes. CTEK rates it for 12V lead acid banks from 40 to 500Ah.

How do I wire the M300 to the batteries?

The 4 metre lead ends in eyelets that bolt to the battery terminals. One CTEK M300 charger with a 4 metre charging lead finished in eyelet terminals.

Can I leave the M300 connected all season?

Yes. It switches to maintenance once the bank is charged. Check the charger has a well ventilated, protected spot near a 240V outlet.

Also worth a look:Household ChargersandBattery Chargers.