# Fulmen FL605 · Start-Stop battery 12V 60Ah 520A ![Fulmen FL605 · Start-Stop battery 12V 60Ah 520A](https://bateriasonline.es/2722-home_default/fulmen-fl605.jpg) > Fulmen FL605: 60 Ah Start-Stop battery, 520 A (EN), 230×173×222 mm, positive terminal on the left, D23 case, EFB. Equivalent to Exide EL605 and Tudor TL605. **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-fl605 - **Language**: en - **Brand**: Fulmen - **Reference**: BOL-FULMEN-FL605 - **EAN**: 3661024046497 - **MPN**: FL605 - **Last updated**: 2026-10-27 ## Technical specifications | Feature | Value | |---|---| | Brand | Fulmen | | Range | FULMEN EFB | | Application | Start-Stop cars | | Technology | EFB | | Voltage | 12 V | | Capacity | 60 Ah | | Cold cranking amps (EN) | 520 A | | Length | 230 mm | | Width | 173 mm | | Height | 222 mm | | Weight | 15.8 kg | | Polarity | Positive terminal on the left | | Case size | D23 (232 × 173 × 225 mm) | ## Quick description The Fulmen FL605 is a Start-Stop battery (EFB) with 12 V, 60 Ah and 520 A cold cranking current, case size D23 (230 × 173 × 222 mm), with the positive terminal on the left. Need the positive terminal on the right? The same battery is the Fulmen FL604. ## Description ## The Fulmen FL605 at a glance The Fulmen FL605 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 FL605 keeps the radio, climate control and lights running with the engine off without losing capacity. At 60 Ah it covers petrol compacts and small diesels, the best-selling format in Europe. The FL605 belongs to the Fulmen FULMEN EFB range. [The full range of Fulmen batteries](https://bateriasonline.es/en/fulmen-batteries) ## Fulmen FL605 vs FK508 and FL604 How the FL605 compares with Fulmen batteries of similar size and capacity: | Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight | |---|---|---|---|---|---| | Fulmen FL605 (this one) | 60 Ah | 520 A | 230 × 173 × 222 | left | 15.8 kg | | Fulmen FK508 | 50 Ah | 800 A | 260 × 173 × 206 | – | 17.5 kg | | Fulmen FL604 | 60 Ah | 520 A | 230 × 173 × 222 | right | 15.8 kg | - Fulmen FK508: 10 Ah less, 280 A more cranking power, a different case (260 × 173 × 206 mm), AGM technology. - Fulmen FL604: identical to the FL605 except for the positive terminal, which is on the other side (positive terminal on the right). ## Part numbers and codes for the Fulmen FL605 The FL605 is listed under these codes on labels, in garages and in catalogues: | Commercial reference | FL605 | |---|---| | EAN | 3661024046497 | | Case size (EN) | D23 | | Not to be confused with | Fulmen FL600 (60 Ah, 640 A, positive terminal on the right), Fulmen FL604 (60 Ah, 520 A, positive terminal on the right), Fulmen FB605 (60 Ah, 480 A) | ## Equivalents and alternatives to the Fulmen FL605 As the FL605 is an EFB, only EFB or AGM batteries of the same size and polarity are listed: you can step up to AGM, but not down to a conventional battery. | Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) | |---|---|---|---|---| | Exide EL605 | EFB | 60 Ah | 520 A | 230 × 173 × 222 | | Tudor TL605 | EFB | 60 Ah | 520 A | 230 × 173 × 222 | ## What to look at before buying the FL605 - Measure the space: the FL605 takes up 230 × 173 × 222 mm (European case size D23). - The FL605 has the positive terminal on the left: compare it with your current battery. - Your current battery should say about 60 Ah; a little more is also fine. - The FL605 delivers 520 A cold cranking (EN standard); do not go below what your original battery states. - The FL605 is an EFB: it suits cars that had an EFB or a conventional battery. If yours had an AGM, fit another AGM. ## Inside the FL605: EFB technology The FL605 is an EFB: flooded lead-acid with reinforced plates and separators for Start-Stop. It can be replaced by an AGM, but an AGM must never be replaced by an EFB. ## Frequently asked questions about the Fulmen FL605 ### FL605 or FK508: which one suits me? Compared with the FL605, the Fulmen FK508 has 10 Ah less, 280 A more cranking power and AGM technology. If your current battery says 800 A or more, choose the FK508; if it says 520 A or less, the FL605 is enough. Mind the space: the FK508 measures 260 × 173 × 206 mm. ### Fulmen FL605 or FL604: what is the difference? Only the polarity: the FL605 has the positive terminal on the left and the FL604 the positive terminal on the right. Capacity (60 Ah), cranking power and dimensions are identical. ### Can the Fulmen FL605 be used in a car with Start-Stop? Yes, the FL605 is an EFB: it suits Start-Stop without brake energy recovery, or cars that already had an EFB. If your car left the factory with an AGM, fit another AGM. ### How much does the Fulmen FL605 weigh? 15.8 kg, with 60 Ah of capacity. For reference, the Fulmen FK508 (50 Ah) weighs 17.5 kg. ### Which battery is equivalent to the Fulmen FL605? In EFB or AGM, with its dimensions and polarity: Exide EL605 and Tudor TL605. A conventional battery does not replace the FL605. ### What case size is the Fulmen FL605? Case size D23: 230 × 173 × 222 mm. The FL605 fits any standard D23 battery tray such as the Exide EL605. ### Which charger does the Fulmen FL605 need? An automatic charger with a lead-acid or EFB mode. Modern chargers recognise it like a conventional battery; avoid old ones without voltage control. ## More batteries to compare with the FL605 - [All start-Stop batteries (AGM and EFB)](https://bateriasonline.es/en/start-stop-batteries-agm-efb) - [Full Fulmen catalogue](https://bateriasonline.es/en/fulmen-batteries) - [Exide EL605](https://bateriasonline.es/en/exide-el605) · 60 Ah, 520 A, 230×173×222 mm - [Tudor TL605](https://bateriasonline.es/en/tudor-tl605) · 60 Ah, 520 A, 230×173×222 mm --- *bateriasonline.es — Batteries and accessories · 2026-11-10*