# Start-Stop battery Exide EK820 12V 82Ah 800A AGM

![Start-Stop battery Exide EK820 12V 82Ah 800A AGM](https://baterias.com/5606-home_default/battery-exide-ek820-12v-82ah-800a.jpg)

> Exide EK820 Start-Stop battery 12V 82Ah 800A AGM. Dimensions 315×175×190 mm, + terminal on the right. For Start-Stop vehicles.

**Category:** [Car batteries equipped with start stop system](https://baterias.com/gb/car-batteries-equipped-with-start-stop-system) → [EXIDE](https://baterias.com/gb/exide)

- **Canonical URL**: https://baterias.com/gb/battery-exide-ek820-12v-82ah-800a
- **Language**: en-GB
- **Brand**: EXIDE
- **Reference**: BCOM-EXIDE-EK820
- **EAN**: 3661024037914
- **MPN**: EK820
- **Price**: 119,20 €
- **Stock**: In stock

## Technical specifications

| Feature | Value |
|---|---|
| Brand | EXIDE |
| Reference | EK820 |
| Model | EXIDE AGM |
| Voltage (V) | 12 V |
| Largo | 315 mm |
| Ancho | 175 mm |
| Alto | 190 mm |
| Peso | 23.3 kg |
| Tecnología | AGM |
| EAN | 3661024037914 |
| Terminal layout | Positive terminal on the right |
| Terminal type | EN taper post |
| Hold down | B13 |
| Cold cranking amps (EN) | 800 A |
| Capacity (C20) | 82 Ah (c20) |
| Case type | L04 |

## Quick description

**Exide EK820 12V 82Ah 800A** is a dedicated Start-Stop battery with AGM/EFB technology. Withstands intensive cycling at traffic-light stops (hundreds of cranks per day), recharges quickly while driving and keeps comfort loads alive during long idle periods.

## 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
82 Ah C20

🔋 Cold cranking
800 A EN-1

📏 Dimensions
315×175×190 mm

⚙️ Technology
AGM

🧭 Polarity
Positive on the right

⚖️ Weight
23,3 kg

🏷️ Model
EXIDE AGM

## Description

## Start-Stop battery Exide EK820 82Ah 800A 12V

12*V* Voltage
82*Ah* Capacity
800*A* Cold cranking
23.30*kg* Weight

The **Exide EK820 Start-Stop battery** offers **12 V**, **82 Ah** and **800 A** of cold cranking current (EN) with AGM technology, and is built for cars with Start-Stop, regenerative braking and heavy electrical loads. Its 315 × 175 × 190 mm and the positive terminal on the right make it the exact replacement for the 82 Ah battery fitted as standard to many Start-Stop cars.
- Direct replacement for the original Start-Stop battery.
- Keeps comfort loads running with the engine off at the lights.
- Fast recharge on the move thanks to low internal resistance.
- AGM: faster recharging and better cycle resistance than a conventional battery.

### Dimensions, polarity and mounting

It has external dimensions of 315 × 175 × 190 mm and weighs 23.30 kg. The positive terminal on the right 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 B13 hold-down and EN taper post terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.

### What the Exide EK820 is for

The Exide EK820 is designed for cars with Start-Stop, regenerative braking and heavy electrical loads. If your car was fitted with an AGM or EFB battery, always replace it with the same technology: a conventional model would degrade within months. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 23.30 kg, EN taper post terminals and B13 hold-down.

### Technology inside the Exide EK820

The EK820 is one of the Exide references for this type of use; it shares the same manufacturing and quality-control criteria as the rest of the brand's catalogue.
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.

### Why choose Exide batteries

With more than a century of history, Exide Technologies manufactures automotive, marine, motorcycle and industrial batteries in Europe. Its presence as original equipment on assembly lines vouches for the quality of every reference. All the Exide batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.

### Warranty and coverage

The Exide EK820 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.

### Care and maintenance

Do not mix technologies: a conventional battery in a Start-Stop car degrades within months. If the vehicle only does very short trips, a periodic maintenance charge with an AGM/EFB-compatible charger greatly extends its life.

### Delivery times and returns

Order **before 6:00 pm** 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 **14 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 this battery AGM? What is it for?

Yes. The EK820 from Exide 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 this battery compatible with Start-Stop systems?

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 — 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 EK820 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 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 (−) 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 — with positive on the right match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On cars with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.

### How long does the Exide EK820 battery last?

Expected lifespan of the Exide EK820 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 size is this battery?

Dimensions (length × width × height) are 315×175×190 mm — also written as 315x175x190 mm and correspond to the European L4 case size — 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.

### What polarity does the Exide EK820 battery have?

Polarity: positive on the right. 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.

### Will the Exide EK820 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 — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The EK820 fits 418 verified vehicle versions in our database.

### Which batteries are equivalent to the Exide EK820?

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 — 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.

### When do I need an AGM battery like this one?

AGM (Absorbent Glass Mat) technology uses absorbent fibreglass that retains the electrolyte, eliminating leaks and allowing up to 3× 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 Exide EK820 is fully original and meets European EN 50342-6 standards for advanced Start-Stop.

### Do I need to register the Exide EK820 on the car after installation?

On most cars it is not strictly necessary — 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 — the alternator just takes a few days to adjust the profile. The Exide EK820 ships factory-charged at 80-90% so you can use it straight after fitting.


## Compatible vehicles

This battery fits 418 vehicles. Most searched:

- [MERCEDES-BENZ E-CLASS (W212) (2009)](https://baterias.com/gb/car-batteries/mercedes-benz/e-class-w212)
- [FORD TRANSIT V363 Platform/Chassis (FED, FFD) (2013)](https://baterias.com/gb/car-batteries/ford/transit-v363-platformchassis-fed-ffd)
- [FORD TRANSIT V363 Van (FCD, FDD) (2013)](https://baterias.com/gb/car-batteries/ford/transit-v363-van-fcd-fdd)
- [MERCEDES-BENZ C-CLASS (W205) (2013)](https://baterias.com/gb/car-batteries/mercedes-benz/c-class-w205)
- [MERCEDES-BENZ GLA-CLASS (X156) (2013)](https://baterias.com/gb/car-batteries/mercedes-benz/gla-class-x156)
- [AUDI A4 B8 (8K2) (2007)](https://baterias.com/gb/car-batteries/audi/a4-b8-8k2)
- [FORD F-150 Crew Cab Pickup (2014)](https://baterias.com/gb/car-batteries/ford/f-150-crew-cab-pickup)
- [AUDI A6 C6 (4F2) (2004)](https://baterias.com/gb/car-batteries/audi/a6-c6-4f2)
- [BMW 3 (F30, F80) (2011)](https://baterias.com/gb/car-batteries/bmw/3-f30-f80)
- [BMW 3 Touring (F31) (2012)](https://baterias.com/gb/car-batteries/bmw/3-touring-f31)
- [BMW 1 (F20) (2011)](https://baterias.com/gb/car-batteries/bmw/1-f20)
- [HYUNDAI TUCSON (TL, TLE) (2015)](https://baterias.com/gb/car-batteries/hyundai/tucson-tl-tle)

## Equivalent batteries

- [TUDOR TK820](https://baterias.com/gb/battery-tudor-tk820-12v-82ah-800a)
- [VARTA A6](https://baterias.com/gb/battery-varta-a6-agm-12v-80ah-800a)

## Reviews

- **Average rating**: 5 / 5 (2 reviews)

## 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

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*baterias.com — Automotive batteries · 2026-10-25*