CTEK M25 Marine Boat Smart Battery Charger Lithium Mode AGM 12v CTEK-40-199
Reliable power & hardware for Australian conditions
Why you’ll love it
Built for Aussie conditions
Reliable in heat, dust, and long-distance travel.
Efficient & safe
High-quality components for stable, efficient operation.
Easy to use
Clear ports, connections, or fittings. Minimal setup.
Local support
Warranty coverage and Australia-based assistance.
Performance at a glance
| Metric | Value | Notes |
|---|---|---|
| Capacity | See specs | Nominal (Ah/Wh) |
| Chemistry | LiFePO₄ / AGM / etc. | Cycle life & safety vary |
| Max discharge | — | Continuous/peak as applicable |
Compare options
Mid-range option
All-rounder
High-output
Popular add-ons
Solar panels
Top up off-grid faster. Bundle & save.
Cables & connectors
Plug-and-play setups without fuss.
Protection & mounting
Covers, brackets, and rails.
Monitoring
Track performance and usage.
FAQs
What’s the warranty?
2–5 years depending on model. Australia-based support.
Shipping & returns?
Fast dispatch Australia-wide. 30-day returns on eligible items.
Is it compatible with my setup?
Check specs or ask us on chat — we’ll point you to the right fit.
Do you offer instalments?
Yes — Afterpay available at checkout.
Technical details
The M25 is recommended for boat owners who need quick and effective charging for larger service batteries.
The M25 is the perfect 25A battery charger for all boat owners. It has a range of functions, including a Recond mode for reconditioning deeply discharged Wet and Ca/Ca batteries, and a temperature sensor which optimises the charge if the temperature deviates from +25ºC. It also has a dedicated mode for lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP)
The M25 comes with a long 4m cable with M10 eyelets for easy installation on your boat.
Specification
- Brand: CTEK
- Model: M25
- Input: 220–240VAC, 50–60Hz, 2.9A max
- Output: 14.4/14.7/13.8/15.8V, 25A max
- Back Current Drain: Corresponding to less than 2Ah/month
- Ambient Temperature: -20˚C to +50˚C
- Battery Types: All types of 12V Lead Acid batteries (WET, EFB, Ca/Ca, AGM and GEL) 12V (4cells) Lithium batteries (Li-FePO4, Li-Fe, Li-iron, LFP)
- Battery Capacity: 40–500 Ah / Lead Acid battery types / 30–450 Ah / LiFePO4 battery type
- Insulation Class: IP44
- Warranty: 5 Years
IN THE BOX
- 1 x CTEK M25 Battery Charger
- User Manual is accessible online
SKU: CTEK-40-199
We accept Change of Mind returns for 14 days after you have received the item in cases where you have changed your mind or made an incorrect purchase and wish to return the product. This also applies to orders cancelled when the item has already been dispatched from our warehouse. The item must be in a re-saleable condition to qualify for a change of mind refund. Deductions may apply including Initial and Return Shipping, as well as restocking fee of 10% of the product price
The M25 is recommended for boat owners who need quick and effective charging for larger service batteries.
The M25 is the perfect 25A battery charger for all boat owners. It has a range of functions, including a Recond mode for reconditioning deeply discharged Wet and Ca/Ca batteries, and a temperature sensor which optimises the charge if the temperature deviates from +25ºC. It also has a dedicated mode for lithium batteries (LiFePO4, Li-Fe, Li-iron, LFP)
The M25 comes with a long 4m cable with M10 eyelets for easy installation on your boat.
Specification
- Brand: CTEK
- Model: M25
- Input: 220–240VAC, 50–60Hz, 2.9A max
- Output: 14.4/14.7/13.8/15.8V, 25A max
- Back Current Drain: Corresponding to less than 2Ah/month
- Ambient Temperature: -20˚C to +50˚C
- Battery Types: All types of 12V Lead Acid batteries (WET, EFB, Ca/Ca, AGM and GEL) 12V (4cells) Lithium batteries (Li-FePO4, Li-Fe, Li-iron, LFP)
- Battery Capacity: 40–500 Ah / Lead Acid battery types / 30–450 Ah / LiFePO4 battery type
- Insulation Class: IP44
- Warranty: 5 Years
IN THE BOX
- 1 x CTEK M25 Battery Charger
- User Manual is accessible online
SKU: CTEK-40-199
We accept Change of Mind returns for 14 days after you have received the item in cases where you have changed your mind or made an incorrect purchase and wish to return the product. This also applies to orders cancelled when the item has already been dispatched from our warehouse. The item must be in a re-saleable condition to qualify for a change of mind refund. Deductions may apply including Initial and Return Shipping, as well as restocking fee of 10% of the product price
