# Fulmen FK950 · Start-Stop battery 12V 95Ah 850A ![Fulmen FK950 · Start-Stop battery 12V 95Ah 850A](https://bateriasonline.es/2664-home_default/fulmen-fk950.jpg) > Fulmen FK950: 95 Ah Start-Stop battery, 850 A (EN), 353×175×190 mm, positive terminal on the right, L5 case, AGM. Equivalent to Exide EK960 and Tudor TK960. **Category:** [Start-Stop batteries (AGM and EFB)](https://bateriasonline.es/en/start-stop-batteries-agm-efb) → [Fulmen](https://bateriasonline.es/en/fulmen-batteries) - **Canonical URL**: https://bateriasonline.es/en/fulmen-fk950 - **Language**: en - **Brand**: Fulmen - **Reference**: BOL-FULMEN-FK950 - **EAN**: 3661024045742 - **MPN**: FK950 - **Last updated**: 2026-11-06 ## Technical specifications | Feature | Value | |---|---| | Brand | Fulmen | | Range | FULMEN AGM | | Application | Start-Stop cars | | Technology | AGM | | Voltage | 12 V | | Capacity | 95 Ah | | Cold cranking amps (EN) | 850 A | | Length | 353 mm | | Width | 175 mm | | Height | 190 mm | | Weight | 25.9 kg | | Polarity | Positive terminal on the right | | Case size | L5 (353 × 175 × 190 mm) | ## Quick description Fulmen FK950: Start-Stop battery (AGM) with 12 V, 95 Ah and 850 A cold cranking current, case size L5 (353 × 175 × 190 mm), with the positive terminal on the right. ## Description ## Who the Fulmen FK950 is for The Fulmen FK950 is a battery for cars with Start-Stop: it withstands many more starting and partial-discharge cycles than a conventional battery and powers the electronics every time the engine stops at the lights. In a Start-Stop car, the FK950 keeps the radio, climate control and lights running with the engine off without losing capacity. At 95 Ah it moves into large diesels, SUVs, vans and cars with heavy electrical equipment. The FK950 belongs to the Fulmen FULMEN AGM range. [See all Fulmen batteries](https://bateriasonline.es/en/fulmen-batteries) ## Fulmen FK950 vs FK960 and FK1050: differences The real differences between the FK950 and the closest Fulmen models: | Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight | |---|---|---|---|---|---| | Fulmen FK950 (this one) | 95 Ah | 850 A | 353 × 175 × 190 | right | 25.9 kg | | Fulmen FK960 | 96 Ah | 850 A | 353 × 175 × 190 | right | 26.1 kg | | Fulmen FK1050 | 105 Ah | 950 A | 392 × 175 × 190 | right | 29 kg | - Fulmen FK960: 1 Ah more, the same cranking power, the same L5 case. - Fulmen FK1050: 10 Ah more, 100 A more cranking power, a different case (392 × 175 × 190 mm). ## Part numbers and codes for the Fulmen FK950 Look for any of these FK950 codes on your current battery or in the manufacturer's catalogue: | Commercial reference | FK950 | |---|---| | EAN | 3661024045742 | | Case size (EN) | L5 | | Not to be confused with | Fulmen FK960 (96 Ah, 850 A), Fulmen FB950 (95 Ah, 800 A) | ## Equivalents and alternatives to the Fulmen FK950 Other AGM batteries that fit the FK950's tray with the same polarity: an AGM can only be replaced by another AGM. | Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) | |---|---|---|---|---| | Varta A5 | AGM | 95 Ah | 850 A | 353 × 175 × 190 | | Deta DK950 | AGM | 95 Ah | 850 A | 353 × 175 × 190 | | Exide EK960 | AGM | 96 Ah | 850 A | 353 × 175 × 190 | | Tudor TK960 | AGM | 96 Ah | 850 A | 353 × 175 × 190 | | Deta DK960 | AGM | 96 Ah | 850 A | 353 × 175 × 190 | | Fulmen FK960 | AGM | 96 Ah | 850 A | 353 × 175 × 190 | ## Check this before ordering the Fulmen FK950 - The FK950 needs 353 × 175 × 190 mm of space (European case size L5): measure it with the hold-down clamp in place. - With the terminals facing you, the positive terminal of the FK950 is on the right. - Your current battery should say about 95 Ah; a little more is also fine. - The FK950 delivers 850 A cold cranking (EN standard); do not go below what your original battery states. - The FK950 is AGM: it replaces an AGM or an EFB of the same size. You can swap an EFB for an AGM, but not an AGM for an EFB. ## Inside the FK950: AGM technology The FK950 is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. Being sealed, the FK950 can be fitted in the boot or under a seat with no risk of spills. ## Frequently asked questions about the Fulmen FK950 ### FK950 or FK960: which one suits me? Compared with the FK950, the Fulmen FK960 has 1 Ah more. With the same cranking power (850 A), the FK950 and the FK960 differ in capacity: the one with more Ah supports more load with the engine off. Both measure 353 × 175 × 190 mm, so they fit the same tray. ### Can the Fulmen FK950 be used in a car with Start-Stop? Yes. As an AGM battery, the FK950 handles automatic engine stop and brake energy recovery, and it can replace an EFB of the same size. ### How much does the Fulmen FK950 weigh? 25.9 kg, with 95 Ah of capacity. For reference, the Fulmen FK960 (96 Ah) weighs 26.1 kg. ### Which battery is equivalent to the Fulmen FK950? Only other AGM batteries with its dimensions and polarity: Varta A5, Deta DK950 and Exide EK960. Neither an EFB nor a conventional battery replaces the FK950. ### What case size is the Fulmen FK950? Case size L5: 353 × 175 × 190 mm. The FK950 fits any standard L5 battery tray such as the Varta A5. ### Which side is the positive terminal on the Fulmen FK950? On the FK950, the positive terminal is on the right with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach. ### Can I fit the Fulmen FK950 if my car came with an AGM battery? Only if the FK950 is AGM. A car that leaves the factory with AGM must always run AGM; an EFB in its place will not last and may trigger dashboard warnings. ## Other options if you are unsure about the FK950 - [Other start-Stop batteries (AGM and EFB)](https://bateriasonline.es/en/start-stop-batteries-agm-efb) - [The whole Fulmen range](https://bateriasonline.es/en/fulmen-batteries) - [Varta A5](https://bateriasonline.es/en/varta-a5) · 95 Ah, 850 A, 353×175×190 mm - [Deta DK950](https://bateriasonline.es/en/deta-dk950) · 95 Ah, 850 A, 353×175×190 mm --- *bateriasonline.es — Batteries and accessories · 2026-11-10*