# Varta A13 · Car battery 12V 40Ah 330A

![Varta A13 · Car battery 12V 40Ah 330A](https://bateriasonline.es/1504-home_default/varta-a13.jpg)

> Varta A13 (ETN 540125033): 40 Ah car battery, 330 A (EN), 187×140×227 mm, positive terminal on the right.

**Category:** [Car batteries](https://bateriasonline.es/en/car-batteries) → [Varta](https://bateriasonline.es/en/varta-batteries)

- **Canonical URL**: https://bateriasonline.es/en/varta-a13
- **Language**: en
- **Brand**: Varta
- **Reference**: BOL-VARTA-A13
- **EAN**: 4016987167472
- **MPN**: A13
- **Price**: 47,24 € (VAT incl., Spain)
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Varta |
| Range | VARTA Dynamic SLI |
| Application | Cars |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 40 Ah |
| Cold cranking amps (EN) | 330 A |
| Length | 187 mm |
| Width | 140 mm |
| Height | 227 mm |
| Weight | 9.5 kg |
| Polarity | Positive terminal on the right |
| ETN code | 540125033 |

## Quick description

The Varta A13 (ETN 540 125 033, also written A 13 or 540125033) is a car battery with 12 V, 40 Ah and 330 A cold cranking current, measuring 187 × 140 × 227 mm, with the positive terminal on the right.

## Description

## Where the Varta A13 fits

The Varta A13 is a starter battery for cars without Start-Stop: it delivers the current the starter motor needs and then powers lights, control units and audio with the engine off. If your car has no Start-Stop and had a 40 Ah battery, the A13 is a direct replacement.
At 40 Ah it is a small size: the usual choice for petrol superminis and city cars with little equipment. Varta lists the A13 in its Dynamic SLI line. [More Varta batteries](https://bateriasonline.es/en/varta-batteries)

## Varta A13 codes and part numbers

Look for any of these A13 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | A13 (A 13) |
|---|---|
| ETN code | 540125033 (also 540 125 033) |
| EAN | 4016987167472 |
| Case size according to Varta | B19H |
| UK code | 054H |
| Base hold-down | B01 |
| Also known as | Varta A 13 · Varta 540125033 · Varta 540 125 033 · B19H |
| Not to be confused with | Varta A17 (41 Ah, 360 A), Varta E13 (70 Ah, 640 A), Varta A15 (40 Ah, 330 A, positive terminal on the left) |

## Varta A13 vs B23 and B31

Torn between the A13 and another similar Varta? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Varta A13 (this one) | 40 Ah | 330 A | 187 × 140 × 227 | right | 9.5 kg |
| Varta B23 | 45 Ah | 300 A | 220 × 135 × 225 | right | 10.7 kg |
| Varta B31 | 45 Ah | 330 A | 238 × 129 × 227 | right | 11.3 kg |

- Varta B23: 5 Ah more, 30 A less cranking power, a different case (220 × 135 × 225 mm).
- Varta B31: 5 Ah more, the same cranking power, a different case (238 × 129 × 227 mm).

## Equivalents and alternatives to the Varta A13

No other reference in the catalogue fully matches the dimensions and polarity of the A13; you will find the closest ones among our [car batteries](https://bateriasonline.es/en/car-batteries).

## Lead-acid technology in the A13

The A13 is a conventional lead-acid battery, with plates immersed in liquid electrolyte. In cars without energy management, the A13 needs no special registration: just connect it.

## Before ordering the A13, check this

- If your car has Start-Stop, the A13 is not the right one: it needs an EFB or an AGM.
- Check the EN amps on your battery: if it says 330 A or less, the A13 covers your engine.
- Your current battery should say about 40 Ah; a little more is also fine.
- Polarity of the A13: positive terminal on the right (if yours has it on the other side, the cables will not reach).
- Measure the space: the A13 takes up 187 × 140 × 227 mm.

## Frequently asked questions about the Varta A13

### Varta A13 or B23?

Compared with the A13, the Varta B23 has 5 Ah more and 30 A less cranking power. The A13 cranks harder; the B23 is only a good option if your original battery says 300 A or less. Mind the space: the B23 measures 220 × 135 × 225 mm.

### What does the code 540 125 033 on the Varta A13 mean?

It is its ETN (European Type Number), also written 540125033. The first three digits (540) encode voltage and capacity: 12 V and 40 Ah (5xx = under 100 Ah, 6xx = 100 to 199 Ah, 7xx = 200 Ah or more). The middle group (125) identifies the specific model within that capacity, and the last three digits (033) multiplied by 10 give the cold cranking current: 330 A.

### Can the Varta A13 be used in a car with Start-Stop?

No. The A13 is a lead-acid battery for cars without automatic engine stop; Start-Stop needs an EFB or an AGM.

### How much does the Varta A13 weigh?

The A13 weighs 9.5 kg. For reference, the Varta B23 (45 Ah) weighs 10.7 kg.

### Which side is the positive terminal on the Varta A13?

The A13 has the positive terminal on the right, looking at the battery from its long side with the terminals closest to you.

## Other options if you are unsure about the A13

- [Other car batteries](https://bateriasonline.es/en/car-batteries)
- [Full Varta catalogue](https://bateriasonline.es/en/varta-batteries)

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