Exide ET550 Marina Dual ET · Marine battery 80Ah 600A
Specifications
| Brand | EXIDE |
|---|---|
| Part number | ET550 |
| Voltage (V) | 12 |
| Capacity (C20) | 80Ah (c20) |
| Cold cranking amps (EN) | 600A |
| Technology | Lead-acid |
| Length | 278 mm |
| Width | 175 mm |
| Height | 190 mm |
Exide ET550 12V 80Ah 600A is a marine battery with reinforced anti-vibration case for moorings and offshore use. Tolerates the typical daily cycles on a boat (engine start + night-time services such as lights, sonar, fridge) and holds voltage even when the hull is rolling in open sea.
Why this marine battery?
- Marine designbuilt for boat swell and vibration
- Dual functionstarts the engine and powers onboard services
- Sealed and safemaintenance-free even when the boat rolls
Where it fits: the Exide ET550 is one of our boat batteries, belongs to our Exide batteries and by capacity it sits among our 80Ah batteries.
The Exide ET550 in practice
ET550 vs Exide EN800
The Exide ET550 offers 80 Ah and 600 A cold cranking in a 278 × 175 × 190 mm case. The Exide EN800, same brand and technology, goes up to 90 Ah and 720 A with 75 mm more length and costs €42.30 less. Going up is only worth it if the tray allows it and the car cranks lazily in the cold; in normal use this one is plenty.

Marine battery Exide ET550 Marina Dual Et 80Ah 600A 12V
With 80 Ah at 12 V and 600 A of cold cranking current (EN), the Exide ET550 from the Marina Dual Et range is built for motor and sailing boats, both for engine starting and onboard services. It replaces the original battery without adaptation in boats with a 278 × 175 × 190 mm format: same 80 Ah capacity and the positive terminal on the right.
- Conventional lead-acid: the most proven and economical technology.
- Reinforced case against vibration and swell.
- Powers onboard services: lights, sounder, GPS, fridge.
- Tolerates the daily cycling of a boat in season.
What the Exide ET550 is for
The Exide ET550 is designed for motor and sailing boats, both for engine starting and onboard services. If it is your starter battery, run the services from a separate battery; if it is a service battery, avoid routinely discharging it beyond 50%. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 20.70 kg, 1 terminals and B13 hold-down.
Size, terminals and hold-down of the Exide ET550
The Exide ET550 is made in the 278 × 175 × 190 mm format and weighs 20.70 kg. The positive terminal on the right decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses a B13 hold-down and 1 terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.
What Exide does differently
Exide is one of the world's largest battery manufacturers and an original-equipment supplier to many car makers. Its European plants produce starter, industrial and leisure batteries under original-equipment quality controls. We guarantee that every Exide arrives new, charged and with the manufacturer's full warranty.
The Exide ET550: Marina Dual Et range and conventional lead-acid technology
The Marina Dual Et is the Exide range the ET550 belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle.
Conventional lead-acid is the benchmark against which other technologies are compared: good cranking current, great tolerance to alternator charging and the best price per amp-hour.
Care and maintenance
Protect the terminals with dielectric grease and check the fixing: vibration and swell loosen connections. At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up.
Official warranty
The Exide ET550 comes with the manufacturer's official warranty against manufacturing defects. Deep discharge from winter lay-up without charging is not covered.
Delivery times and returns
Same-day dispatch from our warehouse for in-stock orders placed before 6:00 pm: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for 14 days if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.
Data sheet
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BrandEXIDE
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ReferenceET550
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ModelEXIDE MARINA DUAL ET
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Voltage (V)12
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Length278 mm
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Width175 mm
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Height190 mm
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Weight20.70 Kgs
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TechnologyLead-acid
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EAN3661024036344
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Terminal layoutPositive terminal on the right
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Terminal type1
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Hold-downB13
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Cold cranking amps (EN)600A
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Capacity (C20)80Ah (c20)
Specific References
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EAN133661024036344
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MPNET550
Codes and references Exide ET550
| Brand | Exide · see all Exide batteries |
|---|---|
| Manufacturer range | EXIDE MARINA DUAL ET |
| Manufacturer part number (MPN) | ET550 |
| EAN-13 barcode | 3661024036344 |
| European case size (EN 50342-2) | L3 |
| Dimensions (length × width × height) | 278 × 175 × 190 mm (278x175x190) |
Exide ET550: alternatives with the same dimensions
Batteries from our catalogue with the same dimensions, voltage and technology as the Exide ET550 and a similar capacity, sorted by sales. They are not manufacturer-approved equivalents: check the polarity and capacity of your original battery.
| Product | Specifications | Technology | Price | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Exide
ET550
This battery
|
12V 80Ah 600A | Lead-acid | 179,60 € | |||||||||||||||||||||
Exide
EN750
Same size |
12V 74Ah 680A | Lead-acid | 123,80 € −55,80 € | |||||||||||||||||||||
| ||||||||||||||||||||||||
| ET550 | EN750 | |
|---|---|---|
| Capacity | 80 Ah | 74 Ah |
| Cold cranking (EN) | 600 A | 680 A |
| Technology | Lead-acid | Lead-acid |
| Dimensions (mm) | 278 × 175 × 190 | 278 × 175 × 190 |
| Positive terminal | Positive terminal on the right | Positive terminal on the right |
| Price | 179,60 € | 123,80 € |
Varta
LFD75
Same size Exide ET550 vs Varta LFD75
Same size · +71,10 €
Same case and same technology as the ET550: an alternative by size, not an official equivalent. Compared with the ET550 it has 5 Ah less and 50 A of cold cranking more. It costs 71,10 € more. If the polarity matches and your equipment had a similar capacity, it works as a replacement; if in doubt, ask us with your model.
| ET550 | LFD75 | |
|---|---|---|
| Capacity | 80 Ah | 75 Ah |
| Cold cranking (EN) | 600 A | 650 A |
| Technology | Lead-acid | Lead-acid |
| Dimensions (mm) | 278 × 175 × 190 | 278 × 175 × 190 |
| Positive terminal | Positive terminal on the right | Positive terminal on the right |
| Price | 179,60 € | 250,70 € |
Varta
LFS74
Same size Exide ET550 vs Varta LFS74
Same size · −53,30 €
It has the same dimensions, voltage and technology as the ET550, although it is not a manufacturer-approved equivalent. Compared with the ET550 it has 6 Ah less and 80 A of cold cranking more. It costs 53,30 € less. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.
| ET550 | LFS74 | |
|---|---|---|
| Capacity | 80 Ah | 74 Ah |
| Cold cranking (EN) | 600 A | 680 A |
| Technology | Lead-acid | Lead-acid |
| Dimensions (mm) | 278 × 175 × 190 | 278 × 175 × 190 |
| Positive terminal | Positive terminal on the right | Positive terminal on the right |
| Price | 179,60 € | 126,30 € |
Automatic selection by dimensions (±3 mm), voltage, technology and capacity (−10 % / +20 %). Official manufacturer warranty on every option.
Other 80Ah batteries: We stock 30 models of 80 Ah to compare by price, technology and cold cranking: see all 80Ah batteries. Same size (278 × 175 × 190 mm): batteries of 278 × 175 × 190 mm.
Recommended accessories
Compatible vehicles
The Exide ET550 fits 4 vehicles. Most searched below:
Frequently asked questions
Is this a starting or a service (leisure) battery?
Dual purpose: it can start the engine and also work as a service battery, handy on boats with a single battery. On boats with two circuits the ideal is one starting battery and one service battery.
In what position can it be installed on the boat?
It must be mounted upright, firmly secured and in a ventilated compartment, because it gives off gases when charging. Keep the terminals away from salt water.
What size is this battery?
Measure the battery tray before ordering: a one-millimetre difference is enough for the hold-down clamp not to close. It measures 278×175×190 mm in length × width × height, with the terminals included in the height; that is the European L3 case size.
What polarity does the Exide ET550 battery have?
Polarity of the Exide ET550: positive on the right. Seen from the front, terminals towards you, the positive (+) is the post with the red ring. A change of polarity from the original means longer cables or a reconfigured system and can cause a short circuit: check it before ordering.
Exide ET550 or Exide EN750: which one to choose?
It has the same dimensions, voltage and technology as the ET550, although it is not a manufacturer-approved equivalent. Compared with the ET550 it has 6 Ah less and 80 A of cold cranking more. It costs 55,80 € less. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.
Exide ET550 or Varta LFD75: which one to choose?
Same case and same technology as the ET550: an alternative by size, not an official equivalent. Compared with the ET550 it has 5 Ah less and 50 A of cold cranking more. It costs 71,10 € more. If the polarity matches and your equipment had a similar capacity, it works as a replacement; if in doubt, ask us with your model.
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