# Start-Stop battery Fulmen FK950 12V 95Ah 850A AGM ![Start-Stop battery Fulmen FK950 12V 95Ah 850A AGM](https://baterias.com/3758-home_default/battery-fulmen-fk950-12v-95ah-850a.jpg) > Fulmen FK950 Start-Stop battery 12V 95Ah 850A AGM. Dimensions 353Γ—175Γ—190 mm, + terminal on the right. For Start-Stop vehicles. **Category:** [Car batteries equipped with start stop system](https://baterias.com/gb/car-batteries-equipped-with-start-stop-system) β†’ [Fulmen](https://baterias.com/gb/fulmen) - **Canonical URL**: https://baterias.com/gb/battery-fulmen-fk950-12v-95ah-850a - **Language**: en-GB - **Brand**: Fulmen - **Reference**: BCOM-FULMEN-FK950 - **EAN**: 3661024045742 - **MPN**: FK950 - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | FULMEN | | Reference | FK950 | | Model | FULMEN AGM | | Voltage (V) | 12 V | | Largo | 353 mm | | Ancho | 175 mm | | Alto | 190 mm | | Peso | 25.9 kg | | TecnologΓ­a | AGM | | EAN | 3661024045742 | | Terminal layout | Positive terminal on the right | | Terminal type | 1 | | Hold down | B13 | | Cold cranking amps (EN) | 850 A | | Capacity (C20) | 95 Ah (c20) | | Case type | L05 | ## Quick description **Fulmen FK950 12V 95Ah 850A** is a dedicated Start-Stop battery with AGM/EFB technology. Withstands intensive cycling at traffic-light stops (hundreds of cranks per day), recharges quickly while driving and keeps comfort loads alive during long idle periods. ## Why this Start-Stop battery? - **Designed for Start-Stop** built for the intensive cycling of modern cars - **2 to 3 times longer life** vs fitting a cheap conventional battery - **Fast recovery** recharges in minutes once the engine is running πŸ”Œ Voltage 12 V ⚑ Capacity 95 Ah C20 πŸ”‹ Cold cranking 850 A EN-1 πŸ“ Dimensions 353Γ—175Γ—190 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the right βš–οΈ Weight 25,9 kg 🏷️ Model FULMEN AGM ## Description ## Start-Stop battery Fulmen FK950 95Ah 850A 12V 12*V* Voltage 95*Ah* Capacity 850*A* Cold cranking 25.90*kg* Weight Designed for cars with Start-Stop, regenerative braking and heavy electrical loads, the **Fulmen FK950** combines **95 Ah** and **850 A** of cold cranking current (EN) with AGM construction able to withstand hundreds of starts a day. It measures 353 Γ— 175 Γ— 190 mm and the positive terminal on the right, the format sought by anyone replacing a 95 Ah battery in Start-Stop cars. - Withstands hundreds of starts a day without degrading. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Up to three times the cycles of a conventional battery. - Compatible with regenerative braking and energy management (BMS). ### What the Fulmen FK950 is for With 95 Ah, the Fulmen FK950 is the replacement for cars with Start-Stop, regenerative braking and heavy electrical loads. After the swap it may be necessary to register the new battery in the ECU so that energy management works correctly. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 25.90 kg, 1 terminals and B13 hold-down. ### Will it fit your current battery tray? It has external dimensions of 353 Γ— 175 Γ— 190 mm and weighs 25.90 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. ### Technology inside the Fulmen FK950 Within the Fulmen catalogue, the FK950 is the 95 Ah model designed for this application. AGM (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery. ### Why choose Fulmen batteries Fulmen is the historic French brand of the Exide group: batteries made on the same lines and with the same technology as original equipment, widely used by workshops across Europe. All the Fulmen batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Official warranty The Fulmen FK950 comes with the **manufacturer's official warranty**. To keep it valid, always fit the same technology as the original battery (AGM or EFB) and register the replacement if your vehicle requires it. ### Usage and maintenance tips If the vehicle only does very short trips, a periodic maintenance charge with an AGM/EFB-compatible charger greatly extends its life. Do not mix technologies: a conventional battery in a Start-Stop car degrades within months. ### When you get it and how to return it Orders placed **before 6:00 pm** with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have **14 days** to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships. ## Frequently asked questions ### Is this battery AGM? What is it for? Yes. The FK950 from Fulmen uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for cars with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions. ### Is the Fulmen FK950 battery suitable for Start-Stop? Yes. As AGM technology it is designed for Start-Stop vehicles. AGM batteries support advanced Start-Stop and regenerative braking thanks to their higher cycle count. EFB is recommended for basic Start-Stop; AGM is recommended when regenerative braking is also present, thanks to its higher cycle capability. It works straight out of the box β€” on most modern vehicles registering the battery via OBD is recommended so the alternator automatically applies the optimal charging profile. ### How do I replace a Start-Stop car battery with the FK950? 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€” with positive on the right 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. Also, the negative terminal usually carries a battery sensor (IBS): undo the cable at the terminal nut without removing the sensor. Always replace it with the same technology (AGM or EFB) or higher: a conventional battery wears out within months with Start-Stop. ### How many years does this battery last? Expected lifespan of the Fulmen FK950 is 5 to 8 years in mild-climate car use with Start-Stop. 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 measurements of the FK950 model? Dimensions (length Γ— width Γ— height) are 353Γ—175Γ—190 mm β€” also written as 353x175x190 mm and correspond to the European L5 case size 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. ### What polarity does the Fulmen FK950 battery have? Polarity: positive on the right. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk. ### Is the FK950 valid for my vehicle? Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year β€” we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The FK950 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Fulmen FK950? 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. ### When do I need an AGM battery like this one? AGM (Absorbent Glass Mat) technology uses absorbent fibreglass that retains the electrolyte, eliminating leaks and allowing up to 3Γ— more charge/discharge cycles than a conventional battery. It is the recommended option when the car has advanced Start-Stop with regenerative braking (BMW EfficientDynamics, Mercedes Eco, Audi MHEV, Land Rover ECO, Volvo i-Stop). Withstands tilted positions, high vibration and extreme temperatures better than EFB. The Fulmen FK950 is fully original and meets European EN 50342-6 standards for advanced Start-Stop. ### Will my car recognise the new battery automatically? On most cars it is not strictly necessary β€” the alternator detects the new battery and adapts the charge automatically. It is recommended to register the battery via OBD so that the alternator applies the optimal charging profile from the first minute and extends the battery life as much as possible (especially on brands with sophisticated BMS: BMW, Mercedes, Audi, Volvo, Land Rover). Any workshop with an OBD scanner (~10-15 € labour) does it in 5 minutes. DIY apps: VCDS / Carista (VAG), Bimmercode (BMW), iCarsoft. If you do not register, the car will still start correctly β€” the alternator just takes a few days to adjust the profile. The Fulmen FK950 ships factory-charged at 80-90% so you can use it straight after fitting. ## Equivalent batteries - [VARTA LA95](https://baterias.com/gb/battery-varta-la95agm-12v-95ah-850a) - [VARTA G14](https://baterias.com/gb/battery-varta-g14-agm-12v-95ah-850a) - [TUDOR TK950](https://baterias.com/gb/battery-tudor-tk950-95ah-850a) - [EXIDE EK950](https://baterias.com/gb/battery-exide-ek950-12v-95ah-850a) - [EXIDE EP800](https://baterias.com/gb/battery-exide-ep800-12v-95ah-850a) - [VARTA A5](https://baterias.com/gb/battery-varta-a5-agm-12v-95ah-850a) ## 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· 2026-10-29*