# Varta B34 · Car battery 12V 45Ah 330A

![Varta B34 · Car battery 12V 45Ah 330A](https://bateriasonline.es/1240-home_default/varta-b34.jpg)

> Varta B34 (ETN 545158033): 45 Ah car battery, 330 A (EN), 238×129×227 mm, positive terminal on the left, B24 case. Equivalent to Exide EB455.

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

- **Canonical URL**: https://bateriasonline.es/en/varta-b34
- **Language**: en
- **Brand**: Varta
- **Reference**: BOL-VARTA-B34
- **EAN**: 4016987167557
- **MPN**: B34
- **Price**: 53,57 € (VAT incl., Spain)
- **Last updated**: 2026-11-06

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Varta |
| Range | VARTA Dynamic SLI |
| Application | Cars |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 45 Ah |
| Cold cranking amps (EN) | 330 A |
| Length | 238 mm |
| Width | 129 mm |
| Height | 227 mm |
| Weight | 11.3 kg |
| Polarity | Positive terminal on the left |
| Case size | B24 (238 × 129 × 227 mm) |
| ETN code | 545158033 |

## Quick description

The Varta B34 (ETN 545 158 033, also written B 34 or 545158033) is a car battery with 12 V, 45 Ah and 330 A cold cranking current, case size B24 (238 × 129 × 227 mm), with the positive terminal on the left. If yours has the positive terminal on the right, you need the Varta B31.

## Description

## Where the Varta B34 fits

The Varta B34 is made for petrol and diesel cars without automatic engine stop. Its job is to start the engine in the cold with margin to spare and keep the car's electronics powered.
At 45 Ah it is a small size: the usual choice for petrol superminis and city cars with little equipment. In the Varta catalogue, the B34 belongs to the Dynamic SLI line. [More Varta batteries](https://bateriasonline.es/en/varta-batteries)

## Varta B34 codes and part numbers

This is how the Varta B34 appears on the label and in parts catalogues:

| Commercial reference | B34 (B 34) |
|---|---|
| ETN code | 545158033 (also 545 158 033) |
| EAN | 4016987167557 |
| Case size (EN) | B24 |
| Case size according to Varta | B24RS |
| UK code | 043 |
| Base hold-down | B00 |
| Also known as | Varta B 34 · Varta 545158033 · Varta 545 158 033 · B24RS |
| Not to be confused with | Varta B24 (45 Ah, 300 A), Varta B31 (45 Ah, 330 A, positive terminal on the right), Varta B32 (45 Ah, 330 A, positive terminal on the right) |

## Varta B34 vs A11, B31 and B24: differences

Torn between the B34 and another similar Varta? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Varta B34 (this one) | 45 Ah | 330 A | 238 × 129 × 227 | left | 11.3 kg |
| Varta A11 | 45 Ah | 370 A | 236 × 126 × 224 | left | 13.18 kg |
| Varta B31 | 45 Ah | 330 A | 238 × 129 × 227 | right | 11.3 kg |
| Varta B24 | 45 Ah | 300 A | 220 × 135 × 225 | left | 10.7 kg |

- Varta A11: the same capacity, 40 A more cranking power, a different case (236 × 126 × 224 mm), AGM technology.
- Varta B31: identical to the B34 except for the positive terminal, which is on the other side (positive terminal on the right).
- Varta B24: the same capacity, 30 A less cranking power, a different case (220 × 135 × 225 mm).

## Equivalents and alternatives to the Varta B34

Same dimensions and polarity as the B34, with similar capacity and cranking power; as a conventional battery, the B34 can also be replaced by an EFB or AGM of the same size if you want more cycles.

| Model | Technology | Capacity | Cold cranking (EN) | Dimensions (mm) |
|---|---|---|---|---|
| Kronobat PB-45.1F | Lead-acid | 45 Ah | 330 A | 238 × 129 × 227 |
| Kronobat PB-45.1T | Lead-acid | 45 Ah | 330 A | 238 × 129 × 227 |
| Exide EB455 | Lead-acid | 45 Ah | 330 A | 237 × 127 × 227 |
| Exide EB457 | Lead-acid | 45 Ah | 330 A | 237 × 127 × 227 |
| Tudor TB455 | Lead-acid | 45 Ah | 330 A | 237 × 127 × 227 |
| Tudor TB457 | Lead-acid | 45 Ah | 330 A | 237 × 127 × 227 |

## Lead-acid technology in the B34

Inside, the B34 is classic lead-acid: liquid electrolyte and lead plates. If the B34 is left discharged for weeks it sulphates: a maintenance charger prevents this.

## Check this before ordering the Varta B34

- If your car has Start-Stop, the B34 is not the right one: it needs an EFB or an AGM.
- Cold cranking: 330 A (EN), equal to or higher than the original.
- With 45 Ah, the B34 replaces an original battery of that capacity or slightly less.
- Polarity of the B34: positive terminal on the left (if yours has it on the other side, the cables will not reach).
- The B34 needs 238 × 129 × 227 mm of space (European case size B24): measure it with the hold-down clamp in place.

## Frequently asked questions about the Varta B34

### Varta B34 or A11?

Compared with the B34, the Varta A11 has 40 A more cranking power and AGM technology. If your current battery says 370 A or more, choose the A11; if it says 330 A or less, the B34 is enough. Mind the space: the A11 measures 236 × 126 × 224 mm.

### What is the difference between the Varta B34 and the B31?

They are the same battery with the terminals swapped: positive terminal on the left on the B34, positive terminal on the right on the B31. Look at your current battery with the terminals facing you and pick the one that matches. That is why their ETNs only differ in the middle group: 545 158 033 for the B34 and 545 155 033 for the B31.

### What does the code 545 158 033 on the Varta B34 mean?

It is its ETN (European Type Number), also written 545158033. The first three digits (545) encode voltage and capacity: 12 V and 45 Ah (5xx = under 100 Ah, 6xx = 100 to 199 Ah, 7xx = 200 Ah or more). The middle group (158) identifies the specific model within that capacity, and the last three digits (033) multiplied by 10 give the cold cranking current: 330 A. Its twin with the positive terminal on the other side, the Varta B31, is 545 155 033: only the middle group changes.

### Can the Varta B34 be used in a car with Start-Stop?

No. The B34 is a lead-acid battery for cars without automatic engine stop; Start-Stop needs an EFB or an AGM; in this same size there is the Varta A11.

### How much does the Varta B34 weigh?

The B34 weighs 11.3 kg. For reference, the Varta A11 (45 Ah) weighs 13.18 kg.

### Which battery is equivalent to the Varta B34?

With the same dimensions, polarity and similar capacity you have the Kronobat PB-45.1F, Kronobat PB-45.1T and Exide EB455. As the B34 is a conventional battery, an EFB or AGM of the same size also works.

### What case size is the Varta B34?

Case size B24: 238 × 129 × 227 mm (Varta lists it as B24RS). The B34 fits any standard B24 battery tray such as the Kronobat PB-45.1F.

## Other options if you are unsure about the B34

- [All car batteries](https://bateriasonline.es/en/car-batteries)
- [More Varta models](https://bateriasonline.es/en/varta-batteries)
- [Kronobat PB-45.1F](https://bateriasonline.es/en/kronobat-pb-45-1f) · 45 Ah, 330 A, 238×129×227 mm
- [Kronobat PB-45.1T](https://bateriasonline.es/en/kronobat-pb-45-1t) · 45 Ah, 330 A, 238×129×227 mm

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