# Auxiliary battery Deta DK151 12V 15Ah 200A AGM ![Auxiliary battery Deta DK151 12V 15Ah 200A AGM](https://baterias.com/3623-home_default/battery-deta-dk151-12v-15ah-200a.jpg) > Deta DK151 auxiliary battery 12V 15Ah 200A AGM. Start-Stop Auxiliary range. Dimensions 150Γ—90Γ—145 mm, + terminal on the left. Check fitment by plate. **Category:** [Auxiliary Batteries](https://baterias.com/gb/auxiliary-batteries) β†’ [Deta](https://baterias.com/gb/deta) - **Canonical URL**: https://baterias.com/gb/battery-deta-dk151-12v-15ah-200a - **Language**: en-GB - **Brand**: Deta - **Reference**: BCOM-DETA-DK151 - **EAN**: 3661024026352 - **MPN**: DK151 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | DETA | | Reference | DK151 | | Model | DETA Start-Stop Auxiliary | | Voltage (V) | 12 V | | Largo | 150 mm | | Ancho | 90 mm | | Alto | 145 mm | | Peso | 4.8 kg | | TecnologΓ­a | AGM | | EAN | 3661024026352 | | Terminal layout | Positive terminal on the left | | Terminal type | Thin terminals | | Hold down | B00 | | Cold cranking amps (EN) | 200 A | | Capacity (C20) | 15 Ah (c20) | | Case type | C56 | ## Quick description **Deta DK151 12V 15Ah 200A** is an AGM support battery designed for daily cycling while keeping voltage stable for the vehicle systems. ### Why this auxiliary 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 15 Ah C20 πŸ”‹ Cold cranking 200 A EN-1 πŸ“ Dimensions 150Γ—90Γ—145 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the left βš–οΈ Weight 4,8 kg 🏷️ Model DETA Start-Stop Auxiliary ## Description ## Auxiliary battery Deta DK151 Start-Stop Auxiliary 15Ah 200A 12V 12*V* Voltage 15*Ah* Capacity 200*A* Cold cranking 4.80*kg* Weight The **12 V**, **15 Ah** **Deta DK151** auxiliary battery from the **Start-Stop Auxiliary** range with AGM technology powers the auxiliary network of cars with advanced Start-Stop and heavy electronics. It replaces the original battery without adaptation in vehicles with an auxiliary battery with a 150 Γ— 90 Γ— 145 mm format: same 15 Ah capacity and the positive terminal on the left. - Sealed AGM: safe when installed in the cabin. - Maintenance-free. - AGM technology: absorbed electrolyte, no spills, can be mounted at an angle. - Stabilises the onboard network voltage. ### What the Deta DK151 is for As an auxiliary battery, the Deta DK151 works alongside the main one; replace it when the vehicle reports a fault in the support network. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 4.80 kg, Bornes fines terminals and B00 hold-down. ### The Deta DK151: Start-Stop Auxiliary range and AGM technology The DK151 is part of the Deta **Start-Stop Auxiliary** range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family. 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. ### Size, terminals and hold-down of the Deta DK151 In terms of format, the Deta DK151 measures 150 Γ— 90 Γ— 145 mm (length Γ— width Γ— height) and weighs 4.80 kg. 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 a B00 hold-down and Bornes fines terminals, 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. ### What Deta does differently Deta is the German brand of the Exide group: batteries built with original-equipment technology and a very complete range for cars, Start-Stop, trucks, motorcycles and leisure. All the Deta batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Care and maintenance Replace it with the same technology and capacity as the original. The auxiliary battery works alongside the main one: if a support-network fault warning appears, check both. ### Official warranty The Deta DK151 comes with the **manufacturer's official warranty** against manufacturing defects. If it fails through a defect within the warranty period, we replace it at no cost to you. ### Shipping, delivery and returns Order **before [[ks:cutoff]]** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### Is the Deta DK151 an AGM battery and what are the benefits of AGM? Yes. The DK151 from Deta 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 Deta DK151 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 fit the DK151 model in my car? 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 this page. 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 Deta DK151 battery last? Expected lifespan of the Deta DK151 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 dimensions of the Deta DK151 battery? Dimensions (length Γ— width Γ— height) are 150Γ—90Γ—145 mm β€” also written as 150x90x145 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. ### Will the Deta DK151 battery fit my car? 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 DK151 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### What are the equivalents of the DK151 model? 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. ### What advantages does the Deta DK151 AGM battery offer over an EFB? 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 Deta DK151 is fully original and meets European EN 50342-6 standards for advanced Start-Stop. ### Is there anything to do after replacing a Start-Stop battery? 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 Deta DK151 ships factory-charged at 80-90% so you can use it straight after fitting. ## Equivalent batteries - [TUDOR TK151](https://baterias.com/gb/battery-tudor-tk151-15ah-200a) - [EXIDE EK151](https://baterias.com/gb/battery-exide-ek151-12v-15ah-200a) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-10-02*