# Auxiliary battery Deta DK143 12V 14Ah 80A AGM ![Auxiliary battery Deta DK143 12V 14Ah 80A AGM](https://baterias.com/4423-home_default/battery-deta-dk143-12v-14ah-80a.jpg) > Deta DK143 auxiliary battery 12V 14Ah 80A AGM. Start-Stop Auxiliary range. Dimensions 150Γ—100Γ—100 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-dk143-12v-14ah-80a - **Language**: en-GB - **Brand**: Deta - **Reference**: BCOM-DETA-DK143 - **EAN**: 3661024026383 - **MPN**: DK143 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | DETA | | Reference | DK143 | | Model | DETA Start-Stop Auxiliary | | Voltage (V) | 12 V | | Largo | 150 mm | | Ancho | 100 mm | | Alto | 100 mm | | Peso | 4.2 kg | | TecnologΓ­a | AGM | | EAN | 3661024026383 | | Terminal layout | Positive terminal on the left | | Terminal type | Screwed/Lug | | Hold down | B00 | | Cold cranking amps (EN) | 80 A | | Capacity (C20) | 14 Ah (c20) | | Case type | C76 | ## Quick description **Deta DK143 12V 14Ah 80A** is an auxiliary battery: it supports the Start-Stop system and on-board electronics during stops, without draining the main battery. ## 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 14 Ah C20 πŸ”‹ Cold cranking 80 A EN-1 πŸ“ Dimensions 150Γ—100Γ—100 mm βš™οΈ Technology AGM 🧭 Polarity Positive on the left βš–οΈ Weight 4,2 kg 🏷️ Model DETA Start-Stop Auxiliary ## Description ## Auxiliary battery Deta DK143 Start-Stop Auxiliary 14Ah 80A 12V 12*V* Voltage 14*Ah* Capacity 80*A* Cold cranking 4.20*kg* Weight Designed for the auxiliary network of cars with advanced Start-Stop and heavy electronics, the **Deta DK143** from the **Start-Stop Auxiliary** range stabilises the voltage with **14 Ah** with AGM technology. Measuring 150 Γ— 100 Γ— 100 mm and the positive terminal on the left, it is the direct replacement for vehicles with an auxiliary battery fitted from the factory with a 14 Ah battery of this format. - Supports advanced Start-Stop systems. - Direct replacement for the original auxiliary battery. - AGM: faster recharging and better cycle resistance than a conventional battery. - Protects the main battery and the alternator. ### Size, terminals and hold-down of the Deta DK143 The Deta DK143 is made in the 150 Γ— 100 Γ— 100 mm format and weighs 4.20 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 Screwed/Lug 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 the Deta DK143 is for The Deta DK143 is designed for the auxiliary network of cars with advanced Start-Stop and heavy electronics: it stabilises the voltage and protects the main battery in cars with heavy electronics. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 4.20 kg, Screwed/Lug terminals and B00 hold-down. ### The Deta DK143: Start-Stop Auxiliary range and AGM technology Within the Deta catalogue, the **Start-Stop Auxiliary** series groups the references designed for this use. The DK143 is the 14 Ah model of that family, with the same performance as its siblings in other sizes. 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. ### Why choose Deta batteries 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. ### Warranty and coverage The Deta DK143 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. ### How to make it last longer Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. The auxiliary battery works alongside the main one: if a support-network fault warning appears, check both. ### Shipping, delivery and returns 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 the Deta DK143 an AGM battery and what are the benefits of AGM? Yes. The DK143 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 DK143 model suitable for Start-Stop cars? 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 is the Deta DK143 battery installed in the vehicle? 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 left 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 many years does this battery last? Expected lifespan of the Deta DK143 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 DK143 battery? Dimensions (length Γ— width Γ— height) are 150Γ—100Γ—100 mm β€” also written as 150x100x100 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. ### On which side is the positive of the DK143 model? Polarity: positive on the left. 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 DK143 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 DK143 typically fits a wide range of European vehicles thanks to its standard DIN case format. ### Which batteries are equivalent to the Deta DK143? 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. ### Why choose AGM instead of EFB for my Start-Stop car? 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 DK143 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 Deta DK143 ships factory-charged at 80-90% so you can use it straight after fitting. ## Equivalent batteries - [TUDOR TK143](https://baterias.com/gb/battery-tudor-tk143-12v-14ah-80a) - [EXIDE EK143](https://baterias.com/gb/battery-exide-ek143-12v-14ah-80a) ## 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· 2026-10-27*