Fullriver

Fullriver FT500 · Boat battery 12V 40Ah 500A

Reference: BOL-FULLRIVER-FT500

The Fullriver FT500 is a boat battery with 12 V, 40 Ah and 500 A cold cranking current, measuring 250 × 97 × 206 mm.

The Fullriver FT500 at a glance

The Fullriver FT500 is a battery for boats: engine starting or on-board service, depending on its design, with resistance to damp and hull vibration. Check whether your boat needs starting, service or a dual-purpose battery before choosing.

The FT500 belongs to the Fullriver Full Throttle Series range. More Fullriver batteries

AGM technology in the FT500

The FT500 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the FT500 can be fitted in the boot or under a seat with no risk of spills.

Fullriver FT500 vs FT450 and FT438-U1: differences

Torn between the FT500 and another similar Fullriver? This is what changes:

ModelCapacityCold cranking (EN)Dimensions (mm)Weight
Fullriver FT500 (this one)40 Ah500 A250 × 97 × 20614 kg
Fullriver FT45030 Ah450 A250 × 97 × 15610.6 kg
Fullriver FT438-U135 Ah438 A196 × 131 × 19211.3 kg
  • Fullriver FT450: 10 Ah less, 50 A less cranking power, a different case (250 × 97 × 156 mm).
  • Fullriver FT438-U1: 5 Ah less, 62 A less cranking power, a different case (196 × 131 × 192 mm).

Equivalents and alternatives to the Fullriver FT500

No other reference in the catalogue fully matches the dimensions and polarity of the FT500; you will find the closest ones among our marine and boat batteries.

Fullriver FT500 codes and part numbers

Look for any of these FT500 codes on your current battery or in the manufacturer's catalogue:

Commercial referenceFT500
Terminal typeM6M
Not to be confused withFullriver FT100 (8 Ah, 100 A), Fullriver FT200 (14 Ah, 200 A), Fullriver FT560 (44 Ah, 560 A)

Before ordering the FT500, check this

  • Cold cranking: 500 A (EN), equal to or higher than the original.
  • Capacity of the FT500: 40 Ah; the same as your current battery or slightly more is fine.
  • Length, width and height of the FT500: 250 × 97 × 206 mm.

Frequently asked questions about the Fullriver FT500

Fullriver FT500 or FT450?

Compared with the FT500, the Fullriver FT450 has 10 Ah less and 50 A less cranking power. The FT500 cranks harder; the FT450 is only a good option if your original battery says 450 A or less. Mind the space: the FT450 measures 250 × 97 × 156 mm.

How much does the Fullriver FT500 weigh?

The FT500 weighs 14 kg. For reference, the Fullriver FT450 (30 Ah) weighs 10.6 kg.

How do I look after the boat battery in winter?

Leave it 100% charged, disconnected or on a marine maintenance charger. A battery that spends the winter half-discharged loses capacity permanently.

Keep comparing: alternatives to the FT500

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