Fullriver

Fullriver FT438-U1 · Boat battery 12V 35Ah 438A

Reference: BOL-FULLRIVER-FT438-U1

The Fullriver FT438-U1 is a boat battery with 12 V, 35 Ah and 438 A cold cranking current, measuring 196 × 131 × 192 mm.

Where the Fullriver FT438-U1 fits

The Fullriver FT438-U1 is a battery for boats: engine starting or on-board service, depending on its design, with resistance to damp and hull vibration. With 35 Ah, the FT438-U1 suits boats that had a battery of that capacity.

The FT438-U1 belongs to the Fullriver Full Throttle Series range. The full range of Fullriver batteries

Equivalents and alternatives to the Fullriver FT438-U1

We have no other battery with exactly the dimensions and polarity of the FT438-U1. Browse the rest of our marine and boat batteries to compare close options.

Fullriver FT438-U1 vs FFD35-12, DC35-12B and DC35-12

How the FT438-U1 compares with Fullriver batteries of similar size and capacity:

ModelCapacityCold cranking (EN)Dimensions (mm)Weight
Fullriver FT438-U1 (this one)35 Ah438 A196 × 131 × 19211.3 kg
Fullriver FFD35-1235 Ah225 A196 × 131 × 1679.9 kg
Fullriver DC35-12B35 Ah–196 × 131 × 18011.5 kg
Fullriver DC35-1235 Ah190 A196 × 131 × 16711.5 kg
  • Fullriver FFD35-12: the same capacity, 213 A less cranking power, a different case (196 × 131 × 167 mm).
  • Fullriver DC35-12B: the same capacity, a different height (180 mm instead of 192 mm). It is the option if your battery tray cannot take the 192 mm height of the FT438-U1.
  • Fullriver DC35-12: the same capacity, 248 A less cranking power, a different case (196 × 131 × 167 mm).

AGM technology in the FT438-U1

The FT438-U1 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the FT438-U1 can be fitted in the boot or under a seat with no risk of spills.

What to look at before buying the FT438-U1

  • The FT438-U1 needs 196 × 131 × 192 mm of space: measure it with the hold-down clamp in place.
  • Capacity of the FT438-U1: 35 Ah; the same as your current battery or slightly more is fine.
  • Cold cranking: 438 A (EN), equal to or higher than the original.

Part numbers and codes for the Fullriver FT438-U1

Look for any of these FT438-U1 codes on your current battery or in the manufacturer's catalogue:

Commercial referenceFT438-U1
Terminal typeM6 + TP26 (SAE)

Frequently asked questions about the Fullriver FT438-U1

FT438-U1 or FFD35-12: which one suits me?

Compared with the FT438-U1, the Fullriver FFD35-12 has 213 A less cranking power. The FT438-U1 cranks harder; the FFD35-12 is only a good option if your original battery says 225 A or less. Mind the space: the FFD35-12 measures 196 × 131 × 167 mm.

Fullriver FT438-U1 or DC35-12B: what changes?

Mainly the height: the FT438-U1 is 192 mm tall and the Fullriver DC35-12B 180 mm, with the same length and width and 35 Ah against 35 Ah. Before choosing between the FT438-U1 and the DC35-12B, measure the free height of the battery compartment with the cover or bonnet closed.

How much does the Fullriver FT438-U1 weigh?

11.3 kg, with 35 Ah of capacity. For reference, the Fullriver FFD35-12 (35 Ah) weighs 9.9 kg.

Which charger does the Fullriver FT438-U1 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 FT438-U1

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