12VNominal voltage
40AhCapacity, 20-hour rate (C20)
275ACold cranking amps
In short: The battery on this page is the Fullriver DC40-12, aimed at boats and motorhomes. Terminal position is the detail people most often forget.
Getting the best from the Fullriver DC40-12
Three nights at anchor with the fridge running show quickly what a battery bank can really do. Ventilate the battery locker, even with sealed batteries. Corroded terminals in a damp locker cause many apparent faults.
Technical figures at a glance
ManufacturerFullriver
Model codeDC40-12
SeriesDC Series
Suitsboats and motorhomes
Nominal voltage12V
Capacity, 20-hour rate (C20)40Ah
Cold cranking amps275A
Battery technologyAGM
Size L × W × H198 × 166 × 174 mm
Weight13.4 kg
TerminalsM6
About the technology: AGM
Lead plates in AGM batteries are often slightly thinner than in flooded types. Many modern cars with brake energy recovery were designed around AGM from the start. Leaving a glass-mat battery flat for weeks invites sulphation.
Questions buyers ask about the Fullriver DC40-12
Is the Fullriver DC40-12 suitable for a 12V system?
It is rated 12V and 40Ah. Check your equipment's voltage first: a mismatch can damage electronics or simply not work.
Does my charger suit the technology of this battery?
It is built with AGM technology. Pick charging equipment with a matching mode and avoid storing it discharged.
Fullriver DC40-12: what it is and who it suits
Cruising yachts and touring motorhomes often share the same battery code: Fullriver DC40-12. Identical batteries share the load evenly in a bank. Matching a whole bank is easier at baterias.online, where each model keeps its exact code.
Compact by the standards of boats and motorhomes, with 40Ah.
Explore more
Keep the code DC40-12 handy for next time: it makes reordering at baterias.online quick. Note the fitting date somewhere you will find it again.
Five checks for a perfect fit
- ✓ 40Ah sets how long the battery can power things with the engine off.
- ✓ EN cranking amps of 275A. If you are unsure of your requirement, the vehicle handbook usually states it.
- ✓ Terminal type: M6. Make sure your cable clamps or connectors suit it before fitting.
