# Deta DK800 · Start-Stop battery 12V 80Ah 800A

![Deta DK800 · Start-Stop battery 12V 80Ah 800A](https://bateriasonline.es/2835-home_default/deta-dk800.jpg)

> Deta DK800: 80 Ah Start-Stop battery, 800 A (EN), 315×175×190 mm, positive terminal on the right, L4 case, AGM. Equivalent to Exide EK820 and Tudor TK820.

**Category:** [Start-Stop batteries (AGM and EFB)](https://bateriasonline.es/en/start-stop-batteries-agm-efb) → [Deta](https://bateriasonline.es/en/deta-batteries)

- **Canonical URL**: https://bateriasonline.es/en/deta-dk800
- **Language**: en
- **Brand**: Deta
- **Reference**: BOL-DETA-DK800
- **EAN**: 3661024025720
- **MPN**: DK800
- **Last updated**: 2026-11-07

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Deta |
| Range | DETA AGM |
| Application | Start-Stop cars |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 80 Ah |
| Cold cranking amps (EN) | 800 A |
| Length | 315 mm |
| Width | 175 mm |
| Height | 190 mm |
| Weight | 23.1 kg |
| Polarity | Positive terminal on the right |
| Case size | L4 (315 × 175 × 190 mm) |

## Quick description

The Deta DK800 is a Start-Stop battery (AGM) with 12 V, 80 Ah and 800 A cold cranking current, case size L4 (315 × 175 × 190 mm), with the positive terminal on the right.

## Description

## The Deta DK800 at a glance

The Deta DK800 is designed for automatic engine stop and regenerative braking. In a Start-Stop car, the DK800 keeps the radio, climate control and lights running with the engine off without losing capacity.
At 80 Ah it sits in the range of compact and mid-size diesels, SUVs and MPVs. The DK800 belongs to the Deta DETA AGM range. [The full range of Deta batteries](https://bateriasonline.es/en/deta-batteries)

## Deta DK800 codes and part numbers

This is how the Deta DK800 appears on the label and in parts catalogues:

| Commercial reference | DK800 |
|---|---|
| EAN | 3661024025720 |
| Case size (EN) | L4 |
| Not to be confused with | Deta DK600 (60 Ah, 680 A), Deta DK700 (70 Ah, 760 A), Deta DK820 (82 Ah, 800 A) |

## Deta DK800 vs DK820 and DK720

Torn between the DK800 and another similar Deta? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Deta DK800 (this one) | 80 Ah | 800 A | 315 × 175 × 190 | right | 23.1 kg |
| Deta DK820 | 82 Ah | 800 A | 315 × 175 × 190 | right | 23.3 kg |
| Deta DK720 | 72 Ah | 760 A | 278 × 175 × 190 | right | 20.6 kg |

- Deta DK820: 2 Ah more, the same cranking power, the same L4 case.
- Deta DK720: 8 Ah less, 40 A less cranking power, a different case (278 × 175 × 190 mm).

## Equivalents and alternatives to the Deta DK800

As the DK800 is an AGM battery, we only list other AGM batteries with its dimensions and polarity: neither an EFB nor a conventional battery can replace it.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Varta A6 | AGM | 80 Ah | 800 A | 315 × 175 × 190 |
| Fulmen FK800 | AGM | 80 Ah | 800 A | 315 × 175 × 190 |
| Exide EK820 | AGM | 82 Ah | 800 A | 315 × 175 × 190 |
| Fulmen FK820 | AGM | 82 Ah | 800 A | 315 × 175 × 190 |
| Tudor TK820 | AGM | 82 Ah | 800 A | 315 × 175 × 190 |
| Deta DK820 | AGM | 82 Ah | 800 A | 315 × 175 × 190 |

Its Bosch equivalent is the Bosch S5 A11, the same as for the Varta A6. Bosch is not part of our catalogue; we list it so you can compare.

## AGM technology in the DK800

Inside, the DK800 has glass fibre separators (AGM) that hold the electrolyte. The DK800 needs a charger with an AGM mode that does not exceed 14.7 V.

## Before ordering the DK800, check this

- The DK800 is AGM: it replaces an AGM or an EFB of the same size. You can swap an EFB for an AGM, but not an AGM for an EFB.
- Cold cranking: 800 A (EN), equal to or higher than the original.
- Your current battery should say about 80 Ah; a little more is also fine.
- The DK800 has the positive terminal on the right: compare it with your current battery.
- Length, width and height of the DK800: 315 × 175 × 190 mm (European case size L4).

## Frequently asked questions about the Deta DK800

### Deta DK800 or DK820?

Compared with the DK800, the Deta DK820 has 2 Ah more. With the same cranking power (800 A), the DK800 and the DK820 differ in capacity: the one with more Ah supports more load with the engine off. Both measure 315 × 175 × 190 mm, so they fit the same tray.

### Can the Deta DK800 be used in a car with Start-Stop?

Yes. As an AGM battery, the DK800 handles automatic engine stop and brake energy recovery, and it can replace an EFB of the same size.

### How much does the Deta DK800 weigh?

The DK800 weighs 23.1 kg. For reference, the Deta DK820 (82 Ah) weighs 23.3 kg.

### Which battery is equivalent to the Deta DK800?

Only other AGM batteries with its dimensions and polarity: Varta A6, Fulmen FK800 and Exide EK820. Neither an EFB nor a conventional battery replaces the DK800. Its Bosch equivalent is the Bosch S5 A11, the same as for the Varta A6. Bosch is not part of our catalogue; we list it so you can compare.

### What case size is the Deta DK800?

Case size L4: 315 × 175 × 190 mm. The DK800 fits any standard L4 battery tray such as the Varta A6.

### Which side is the positive terminal on the Deta DK800?

The DK800 has the positive terminal on the right, looking at the battery from its long side with the terminals closest to you.

### Why does a Start-Stop battery cost more than a standard one?

Because it uses reinforced plates and separators to withstand thousands of starts and partial discharges. A conventional battery in a Start-Stop car can fail in under a year.

## Keep comparing: alternatives to the DK800

- [Other start-Stop batteries (AGM and EFB)](https://bateriasonline.es/en/start-stop-batteries-agm-efb)
- [More Deta models](https://bateriasonline.es/en/deta-batteries)
- [Tudor TK720](https://bateriasonline.es/en/tudor-tk720) · 72 Ah, 760 A, 278×175×190 mm
- [Exide EK720](https://bateriasonline.es/en/exide-ek720) · 72 Ah, 760 A, 278×175×190 mm

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*bateriasonline.es — Batteries and accessories · 2026-11-10*