Fullriver

Fullriver FT840-24F · Boat battery 12V 75Ah 840A

Reference: BOL-FULLRIVER-FT840-24F

The Fullriver FT840-24F is a boat battery with 12 V, 75 Ah and 840 A cold cranking current, measuring 276 × 172 × 227 mm.

Where the Fullriver FT840-24F fits

The Fullriver FT840-24F is made for marine use. Fit the FT840-24F securely on board and away from bilge water.

The FT840-24F belongs to the Fullriver Full Throttle Series range. See all Fullriver batteries

What it means that the FT840-24F is AGM

Inside, the FT840-24F has glass fibre separators (AGM) that hold the electrolyte. The FT840-24F needs a charger with an AGM mode that does not exceed 14.7 V.

Fullriver FT840-24F vs FT825-78 and DC85-12: which one to choose?

Torn between the FT840-24F and another similar Fullriver? This is what changes:

ModelCapacityCold cranking (EN)Dimensions (mm)Weight
Fullriver FT840-24F (this one)75 Ah840 A276 × 172 × 22724.5 kg
Fullriver FT825-7865 Ah825 A261 × 172 × 21121.1 kg
Fullriver DC85-1285 Ah510 A260 × 169 × 23625.1 kg
  • Fullriver FT825-78: 10 Ah less, 15 A less cranking power, a different case (261 × 172 × 211 mm).
  • Fullriver DC85-12: 10 Ah more, 330 A less cranking power, a different case (260 × 169 × 236 mm).

Equivalents and alternatives to the Fullriver FT840-24F

Other AGM batteries that fit the FT840-24F's tray with the same polarity: an AGM can only be replaced by another AGM.

ModelTechnologyCapacityCold cranking (EN)Dimensions (mm)
Fullriver FT840-24MAGM75 Ah840 A276 × 172 × 227

Part numbers and codes for the Fullriver FT840-24F

This is how the Fullriver FT840-24F appears on the label and in parts catalogues:

Commercial referenceFT840-24F
Terminal typeAP

Before ordering the FT840-24F, check this

  • Check the EN amps on your battery: if it says 840 A or less, the FT840-24F covers your engine.
  • Your current battery should say about 75 Ah; a little more is also fine.
  • Length, width and height of the FT840-24F: 276 × 172 × 227 mm.

Frequently asked questions about the Fullriver FT840-24F

FT840-24F or FT825-78: which one suits me?

Compared with the FT840-24F, the Fullriver FT825-78 has 10 Ah less and 15 A less cranking power. The FT840-24F cranks harder; the FT825-78 is only a good option if your original battery says 825 A or less. Mind the space: the FT825-78 measures 261 × 172 × 211 mm.

How much does the Fullriver FT840-24F weigh?

24.5 kg, with 75 Ah of capacity. For reference, the Fullriver FT825-78 (65 Ah) weighs 21.1 kg.

Which battery is equivalent to the Fullriver FT840-24F?

Only other AGM batteries with its dimensions and polarity: Fullriver FT840-24M. Neither an EFB nor a conventional battery replaces the FT840-24F.

Which charger does the Fullriver FT840-24F need?

A charger with an AGM mode that limits voltage to about 14.4-14.7 V. Never an old unregulated charger: overcharging dries out an AGM beyond repair.

Other options if you are unsure about the FT840-24F

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