# Start-Stop battery Deta DK508 12V 50Ah 800A AGM ![Start-Stop battery Deta DK508 12V 50Ah 800A AGM](https://baterias.com/3624-home_default/battery-deta-dk508-12v-50ah-800a.jpg) > Deta DK508 Start-Stop battery 12V 50Ah 800A AGM. Dimensions 260×173×206 mm. Built for Start-Stop and regenerative braking: more cycles and fast recharge. **Category:** [Car batteries equipped with start stop system](https://baterias.com/gb/car-batteries-equipped-with-start-stop-system) → [Deta](https://baterias.com/gb/deta) - **Canonical URL**: https://baterias.com/gb/battery-deta-dk508-12v-50ah-800a - **Language**: en-GB - **Brand**: Deta - **Reference**: BCOM-DETA-DK508 - **EAN**: 3661024026369 - **MPN**: DK508 - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | DETA | | Reference | DK508 | | Model | DETA AGM | | Voltage (V) | 12 V | | Largo | 260 mm | | Ancho | 173 mm | | Alto | 206 mm | | Peso | 17.5 kg | | Tecnología | AGM | | EAN | 3661024026369 | | Terminal layout | 9 | | Hold down | B07 | | Cold cranking amps (EN) | 800 A | | Capacity (C20) | 50 Ah (c20) | | Case type | G34 | ## Quick description **Deta DK508 12V 50Ah 800A** is a battery designed specifically for Start-Stop vehicles. Withstands up to 3× more start cycles than a conventional battery and maintains performance with BMS and regenerative braking systems. ## 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 🔌 Voltage 12 V ⚡ Capacity 50 Ah C20 🔋 Cold cranking 800 A EN-1 📏 Dimensions 260×173×206 mm ⚙️ Technology AGM ⚖️ Weight 17,5 kg 🏷️ Model DETA AGM ## Description ## Start-Stop battery Deta DK508 50Ah 800A 12V 12*V* Voltage 50*Ah* Capacity 800*A* Cold cranking 17.50*kg* Weight The **Deta DK508** with AGM technology delivers the **50 Ah** at **12 V** and **800 A** of cold cranking current (EN) that cars with Start-Stop, regenerative braking and heavy electrical loads need. Its 260 × 173 × 206 mm make it the exact replacement for the 50 Ah battery fitted as standard to many Start-Stop cars. - Fast recharge on the move thanks to low internal resistance. - AGM: faster recharging and better cycle resistance than a conventional battery. - Direct replacement for the original Start-Stop battery. - Keeps comfort loads running with the engine off at the lights. ### What the Deta DK508 is for In Start-Stop cars the battery works far harder than in a conventional car; the Deta DK508 is built for that intensive cycling and to recharge quickly on the move. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 17.50 kg and B07 hold-down. ### Dimensions, polarity and mounting In terms of format, the Deta DK508 measures 260 × 173 × 206 mm (length × width × height) and weighs 17.50 kg. It uses a B07 hold-down, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### Deta: the maker behind the DK508 Deta combines German engineering with Exide's industrial capacity. Its Power, Senator and PowerPRO series cover everything from urban cars to construction machinery. We guarantee that every Deta arrives new, charged and with the manufacturer's full warranty. ### Technology inside the Deta DK508 The DK508 is one of the Deta references for this type of use; it shares the same manufacturing and quality-control criteria as the rest of the brand's catalogue. AGM means the acid is held in a glass mat instead of floating free. That is why the battery can be installed in the cabin without gases, survives more cycles and recovers its charge quickly. ### How to make it last longer In a Start-Stop car the battery is controlled by the ECU; after replacing it, the new battery may need to be registered so the system adjusts charging. If the vehicle only does very short trips, a periodic maintenance charge with an AGM/EFB-compatible charger greatly extends its life. ### Warranty and coverage The Deta DK508 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. ### Delivery times and returns Same-day dispatch from our warehouse for in-stock orders placed **before 6:00 pm**: 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 **14 days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### Is this battery AGM? What is it for? Yes. AGM (Absorbent Glass Mat) technology, 50 Ah and 12 V: sealed lead-acid, with the electrolyte held in glass fibre. It tolerates heat better and handles more cycles than a conventional battery, which is why it is the required technology with advanced Start-Stop and regenerative braking. ### Is the Deta DK508 battery suitable for Start-Stop? AGM batteries support advanced Start-Stop and regenerative braking thanks to their higher cycle count. The Deta DK508 is AGM, so yes, it is designed for Start-Stop cars. If the car recovers energy when braking, AGM is recommended for its higher cycle count; for basic Start-Stop, EFB. The manufacturer's specification comes first. Registering it via OBD is advisable on most modern cars (the alternator then applies the optimum profile), but it works from the start. ### What should I bear in mind when fitting this Start-Stop battery? With Start-Stop there are three more points: the negative terminal usually carries a battery sensor (IBS), so undo the cable at the terminal nut without removing the sensor; register the battery via OBD so the alternator applies the correct charging profile; and fit the same technology as the original (AGM or EFB) or higher, because a conventional battery wears out within months. Allow 15-30 minutes and a 10 mm spanner. If the car keeps its battery in the boot or under a seat, it can take up to twice as long. Steps: 1) switch off and remove the key; 2) find the battery (bonnet, boot or under a seat); 3) undo the negative (−), then the positive (+); 4) remove the clamp and the old battery; 5) fit the new one facing the same way to match the polarity; 6) connect the positive (+) and finally the negative (−). Before you start, check the car handbook: the manufacturer's procedure always comes first. Our full step-by-step guide is on the blog. ### What is the service life of the DK508 model? As a rough estimate, the Deta DK508 typically lasts 5 to 8 years in mild-climate car use with Start-Stop; it is a guide figure, not a guaranteed period. Many factors play a part: how it is used (lots of short trips, for example), temperature (cold makes every start harder and intense heat evaporates the electrolyte), the condition of the alternator and charging system, power drawn with the engine off and maintenance, as well as the type of car and whether it has Start-Stop. ### What are the dimensions of the Deta DK508 battery? Its dimensions are 260×173×206 mm, also written 260x173x206 mm; the height already includes the terminals. Check the room available in your car, because a single millimetre too much can stop the clamp from closing. ### Is the DK508 valid for my vehicle? For your own vehicle: type your number plate into the finder (DGT/DVLA/KBA identify model and engine), check the "Compatible vehicles" tab below, listing vehicles verified by our technical team, or message us on WhatsApp with make, model, engine and year; we reply during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). Always cross-check with what the car manufacturer states in the owner's handbook. The DK508 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Deta DK508? To replace the Deta DK508 without modifications, the other battery must be identical in size, polarity, Ah and CCA. Technology matters too: in Start-Stop cars, an EFB cannot be replaced with a conventional battery. The options at the same level are in the "Equivalents" section of this page. ### What advantages does the Deta DK508 AGM battery offer over an EFB? Hence it is recommended for advanced Start-Stop with regenerative braking, such as BMW EfficientDynamics, Mercedes Eco, Audi MHEV, Land Rover ECO or Volvo i-Stop, and it handles tilting, vibration and extreme temperatures better than an EFB. In an AGM (Absorbent Glass Mat) battery the electrolyte is held in a glass-fibre mat: no spills, and many more charge/discharge cycles than a conventional battery. This DK508 delivers 800 A cold cranking (EN). ### Do I need to register the Deta DK508 on the car after installation? On most cars it is not strictly necessary: the alternator detects the new battery and adapts the charge by itself. It is advisable, though, to register it via OBD so the optimum profile applies from the first minute and the battery lasts as long as possible, especially on brands with sophisticated BMS (BMW, Mercedes, Audi, Volvo, Land Rover). Without registration there is no starting problem: the alternator adjusts the profile within a few days. To do it yourself: VCDS or Carista on VAG, Bimmercode on BMW, iCarsoft. At a workshop with an OBD scanner it takes minutes. ## Equivalent batteries - [TUDOR TK508](https://baterias.com/gb/battery-tudor-tk508-50ah-800a) - [EXIDE EK508](https://baterias.com/gb/battery-exide-ek508-12v-50ah-800a) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-11-07*