# Marine battery Fulbat FDM12-700 12V 140Ah 700A AGM CARBON ![Marine battery Fulbat FDM12-700 12V 140Ah 700A AGM CARBON](https://baterias.com/6393-home_default/battery-fulbat-fdm12-700-12v-140ah-700a.jpg) > Fulbat FDM12-700 marine battery 12V 140Ah 700A AGM CARBON. FDM Marine AGM Carbon range. Dimensions 512Γ—188Γ—218 mm, + terminal on the left. **Category:** [Marine Dual Purpose Batteries](https://baterias.com/gb/marine-dual-purpose-batteries) β†’ [FULBAT](https://baterias.com/gb/fulbat) - **Canonical URL**: https://baterias.com/gb/battery-fulbat-fdm12-700-12v-140ah-700a - **Language**: en-GB - **Brand**: FULBAT - **Reference**: BCOM-FULBAT-FDM12-700 - **MPN**: FDM12-700 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULBAT | | Model | FULBAT FDM Marine AGM Carbon | | Voltage (V) | 12 V | | Largo | 512 mm | | Ancho | 188 mm | | Alto | 218 mm | | TecnologΓ­a | AGM Carbon | | Terminal layout | Positive left | | Terminal type | EN | | Cold cranking amps (EN) | 700 A | | Capacity (C20) | 140 Ah | ## Quick description **Fulbat FDM12-700 12V 140Ah 700A** is a quality battery with official manufacturer warranty, confirmed stock and 24-48 h delivery across the peninsula. ## Why this battery? - **Tested and certified** to European EN standards for maximum reliability - **Sealed and maintenance-free** ready to use out of the box - **Long working life** optimised for its real-world use case πŸ”Œ Voltage 12 V ⚑ Capacity 140 Ah C20 πŸ”‹ Cold cranking 700 A EN-1 πŸ“ Dimensions 512Γ—188Γ—218 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the left ## Description ## Marine battery Fulbat FDM12-700 140Ah 700A 12V 12*V* Voltage 140*Ah* Capacity 700*A* Cold cranking The **Fulbat FDM12-700 marine battery** offers **12 V**, **140 Ah** and **700 A** of cold cranking current (EN) with AGM technology, designed for motor and sailing boats, both for engine starting and onboard services. Its 512 Γ— 188 Γ— 218 mm and the positive terminal on the left make it the exact replacement for the 140 Ah battery fitted as standard to many boats. - Resistant to humidity and salt air. - Sealed: no spills or gases in the locker. - Ready for starting outboard and inboard engines. - AGM: faster recharging and better cycle resistance than a conventional battery. ### Size, terminals and hold-down of the Fulbat FDM12-700 In terms of format, the Fulbat FDM12-700 measures 512 Γ— 188 Γ— 218 mm (length Γ— width Γ— height). The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses EN 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 the Fulbat FDM12-700 is for The Fulbat FDM12-700 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 EN terminals. ### Technology inside the Fulbat FDM12-700 The FDM12-700 is one of the Fulbat references for this type of use; it shares the same manufacturing and quality-control criteria as the rest of the brand's catalogue. In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery. ### What Fulbat does differently Fulbat has manufactured in France since 1978 and specialises in motorcycles and light vehicles. Its catalogue is short and clear, covers almost the whole fleet and works only with sealed, leak-free batteries. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### Manufacturer's warranty The Fulbat FDM12-700 comes with the **manufacturer's official warranty** against manufacturing defects. Deep discharge from winter lay-up without charging is not covered. ### Usage and maintenance tips Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. At the end of the season, charge the battery fully and, if possible, keep it on a charger over the winter lay-up. ### When you get it and how to return it Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 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 **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### How is the Fulbat FDM12-700 battery installed in the vehicle? In most cars it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on our blog. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (βˆ’) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). On cars with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### How long does the Fulbat FDM12-700 battery last? Expected lifespan of the Fulbat FDM12-700 is 4 to 7 years in regular use (depends on technology and climate). In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured. ### What are the dimensions of the Fulbat FDM12-700 battery? Dimensions (length Γ— width Γ— height) are 512Γ—188Γ—218 mm β€” also written as 512x188x218 mm β€” following the European DIN standard. Always measure the space in your car before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals. ### Which interchangeable batteries are there for this one? Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology β€” an EFB cannot be replaced with a conventional battery in Start-Stop cars. See the "Equivalents" section to view recommended options at the same performance level. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” automotive battery specialists since 2012. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-21*