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Elan Marine Elan 31.0 · 2002

Battery for your boat Elan Marine Elan 31.0 (2002)

Elan · 31.0
🔧 Battery Expert Advisor

Battery analysis for your Elan Marine Elan 31.0 (2002)

Based on the batteries we found for your vehicle, our experts help you pick the right one.

📋 What we found

For your Elan Marine Elan 31.0 (2002) we found 1 compatible Start-Stop battery.

⚡ Battery type for your vehicle

✓ Your Elan Marine Elan 31.0 (2002) uses the Start-Stop system. Every battery shown is compatible — no conventional options to confuse you.

🔋 Technology (AGM / EFB)

✓ All Start-Stop batteries in the list are AGM — the most advanced technology. Perfect if your current battery was AGM or EFB: AGM always replaces both. Remember to register it via OBD if your car has a BMS (BMW, Audi, VAG, Mercedes…) so the alternator charges it correctly.

📊 View AGM vs EFB vs Conventional — full comparison

Here are the key differences between the three starter battery technologies. AGM is the most advanced technology (and the priciest); EFB is the middle ground for basic Start-Stop; conventional (also called flooded lead-acid) is the classic choice for non-Start-Stop cars.

 AGMEFBConventional
Charge cyclesUp to 3× more Start-Stop cycles than a conventional (cycle endurance certified to VDA standard)~2× more Start-Stop cycles than a conventional (cycle endurance certified to VDA standard)Designed for start + alternator, not for repeated cycles
Expected life5-7 years under average use4-5 years under average use3-4 years under average use
Start-Stop compatible✓ Yes, even advanced systems (regenerative braking)✓ Yes, basic and mid-range Start-Stop✗ No — degrades within months
Cold startExcellent (higher CCA)Very goodAdequate
Relative price€€€ (highest)€€ (mid)€ (lowest)
Recommended forPremium cars with advanced Start-Stop, many electrical accessories, heavy urban useMid-range Start-Stop cars, mixed city/motorway useNon-Start-Stop cars, standard use, tight budget
Replacement ruleReplaces AGM and EFB; NEVER use EFB where AGM was originalReplaces EFB and conventional; does NOT replace AGMOnly conventional; not suitable for Start-Stop

Rule of thumb: when in doubt, a higher technology (AGM) always replaces a lower one (EFB or conventional); never the other way round.

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Verified selection

Receive them tomorrow before 2 PM if you order before 5 PM (Spain mainland and Portugal only).

Start Stop Battery

Battery for start-stop vehicles. Also a strong choice for more cycles, better charge recovery and longer service life.

2 products Battery for start-stop vehicles. Also a strong choice for more cycles, better charge recovery and longer service life.
Categoría Make Referencia Capacidad Arranque en frío Medidas Tecnología Price
Start Stop Battery EXIDE EP800 95 Ah 850 A 353×175×190 mm AGM €132.65 Más info

Conventional Battery

This is a standard or conventional battery for vehicles without a start-stop system

1 product This is a standard or conventional battery for vehicles without a start-stop system
Categoría Make Referencia Capacidad Medidas Price
Conventional Battery VARTA LFD90 77 Ah 353×175×190 mm €214.68 Más info

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Frequently asked questions

The Elan Marine Elan 31.0 2002 may use different batteries depending on engine and equipment. We found 1 compatible batteries. Check dimensions and positive terminal position before purchasing.
Yes, you can install a higher capacity (Ah) battery as long as the physical dimensions fit your Elan Marine Elan 31.0 2002 battery compartment and the positive terminal position matches.
Yes, we detected Start-Stop compatible batteries for your Elan Marine Elan 31.0 2002. If your vehicle has Start-Stop, it needs an AGM or EFB battery. An AGM must always be replaced with AGM. An EFB can be replaced with EFB or AGM. Never install a conventional battery in a Start-Stop vehicle.
Boats need marine batteries that are resistant to moisture and salt corrosion. Deep-cycle AGM batteries are the most recommended because they can withstand repeated discharges and recharges without deteriorating.
A deep-cycle battery is designed to be discharged to 80% of its capacity and recharged repeatedly. It is ideal for boats where it is used as an extended power source. Do not confuse it with a standard starter battery.
Use the search tool by selecting your vehicle's make and model. Our system automatically filters compatible part numbers verified by our technicians. If you have any questions, contact us via WhatsApp.
As they are consumable items, car batteries have a 2-year warranty, truck batteries a 1-year warranty, and all others (motorcycle batteries, cyclic batteries, etc.) a 6-month warranty. If a battery has a manufacturing defect, it will be replaced at no cost to the user.
Under normal circumstances, batteries usually arrive within 1 to 2 days of ordering. However, there are some cases where delivery may take a little longer: peak seasons (Black Friday, Christmas, etc.), palletized shipments, occasional stock shortages, etc.
⚠ Then you need a battery designed for Start-Stop (EFB or AGM). We have hidden the conventional batteries from the list: fitting them in your car would ruin the battery within months and could damage the alternator. The batteries below are built for the frequent charge/discharge cycles of Start-Stop. 💡 Great. You can buy either a conventional or a Start-Stop (EFB or AGM) battery: a Start-Stop battery is perfectly valid in a non-Start-Stop car and is actually more robust (longer life, better cold-start performance). It is just a bit pricier. On vehicles older than year 2000, an EFB is preferable to an AGM: legacy alternators charge at a fixed voltage without temperature compensation, and an AGM needs a more precise charging profile to avoid losing life quickly — an EFB tolerates the classic alternator profile better. 💡 If in doubt, play it safe: buy a Start-Stop battery (EFB or AGM). It works in Start-Stop cars and non-Start-Stop cars alike, lasts longer and avoids any risk. You only pay a few euros more than a conventional one.

Guías

Knowing your battery polarity (positive on the right or on the left) is the most important step before buying a replacement: connecting it the wrong way can damage the electronics. Estimated time: 2 minutes. Tools: eyes only — no tools required.

  1. Locate the battery Open the bonnet of the Elan Marine Elan 31.0 and find the battery. It is usually a rectangular block with two metal terminals (large screw heads) on top — one red or "+" and one black or "−".
  2. Identify the positive terminal The positive terminal (+) typically has a red cap, red sticker or cover, a raised "+" symbol on the casing, and/or a slightly larger diameter (19 mm vs 17 mm of the negative, in standard European batteries).
  3. Face the battery Look at the battery from the label side with the terminals near you — the edge with the terminals should face you, not the back.
  4. Determine polarity If the positive pole is on the RIGHT → choose a battery marked as "positive right". If it is on the LEFT → choose one marked as "positive left". (If the label of your current or new battery shows codes like 0, 1, 3 or 4: 0 and 4 are positive right; 1 and 3, positive left — 3 and 4 correspond to batteries with terminals on the narrow side.)
  5. Note the reference The label on top shows the reference (e.g. "A9", "TK960", "EA900"). Search for the exact model with that reference and the identified polarity — never change polarity without consulting the vehicle manufacturer.

General reference guide: always consult your vehicle manufacturer's manual before following these steps, as procedures may vary or not be suitable depending on model, year and equipment. If in doubt, consult a professional. baterias.com accepts no liability for damage resulting from an incorrect procedure.