# Long 36B20L · Car battery 12V 40Ah

![Long 36B20L · Car battery 12V 40Ah](https://bateriasonline.es/908-home_default/long-36b20l.jpg)

> Long 36B20L: 40 Ah car battery, 197×129×227 mm. Equivalent to Long 36B20R and Long 36B20R(S). Price on request: ask for a free quote.

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

- **Canonical URL**: https://bateriasonline.es/en/long-36b20l
- **Language**: en
- **Brand**: Long
- **Reference**: BOL-LONG-36B20L
- **MPN**: 36B20L
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Long |
| Range | Starting Series |
| Application | Cars |
| Voltage | 12 V |
| Capacity | 40 Ah |
| Length | 197 mm |
| Width | 129 mm |
| Height | 227 mm |
| Weight | 7.8 kg |

## Quick description

Long 36B20L: car battery with 12 V and 40 Ah, measuring 197 × 129 × 227 mm.

## Description

## Where the Long 36B20L fits

The Long 36B20L is made for petrol and diesel cars without automatic engine stop. The 36B20L covers the daily routine of a car without automatic engine stop: cold starts, short trips and loads with the ignition off.
At 40 Ah it is a small size: the usual choice for petrol superminis and city cars with little equipment. The 36B20L belongs to the Long Starting Series range. [See all Long batteries](https://bateriasonline.es/en/long-batteries)

## Long 36B20L vs 32B20R and 34B19L(S): which one to choose?

What sets the 36B20L apart from its neighbours in the Long range:

| Model | Capacity | Dimensions (mm) | Weight |
|---|---|---|---|
| Long 36B20L (this one) | 40 Ah | 197 × 129 × 227 | 7.8 kg |
| Long 32B20R | 35 Ah | 197 × 129 × 227 | 6.1 kg |
| Long 34B19L(S) | 33 Ah | 197 × 129 × 227 | 6.1 kg |

- Long 32B20R: 5 Ah less, the same dimensions.
- Long 34B19L(S): 7 Ah less, the same dimensions.

## Equivalents and alternatives to the Long 36B20L

These batteries share voltage, dimensions and polarity with the 36B20L, with similar capacity: compare cranking power, technology and price before deciding.

| Model | Technology | Capacity | Dimensions (mm) |
|---|---|---|---|
| Long 36B20R | | 40 Ah | 197 × 129 × 227 |
| Long 36B20R(S) | | 40 Ah | 197 × 129 × 227 |

## What to look at before buying the 36B20L

- Your current battery should say about 40 Ah; a little more is also fine.
- Length, width and height of the 36B20L: 197 × 129 × 227 mm.

## Frequently asked questions about the Long 36B20L

### 36B20L or 32B20R: which one suits me?

Compared with the 36B20L, the Long 32B20R has 5 Ah less. With 40 Ah, the 36B20L runs longer between charges than the 32B20R (35 Ah). Both measure 197 × 129 × 227 mm, so they fit the same tray.

### How much does the Long 36B20L weigh?

7.8 kg, with 40 Ah of capacity. For reference, the Long 32B20R (35 Ah) weighs 6.1 kg.

### Which battery is equivalent to the Long 36B20L?

With the same dimensions and polarity as the 36B20L you have the Long 36B20R and Long 36B20R(S); choose by cold cranking power, technology and price.

### Does the new battery need to be registered in the car?

In cars with energy management (common since 2010) it is worth registering the battery in the control unit so it adjusts charging. In older cars you just connect it.

## Keep comparing: alternatives to the 36B20L

- [More car batteries](https://bateriasonline.es/en/car-batteries)
- [More Long models](https://bateriasonline.es/en/long-batteries)
- [Long 36B20R](https://bateriasonline.es/en/long-36b20r) · 40 Ah, 197×129×227 mm
- [Long 36B20R(S)](https://bateriasonline.es/en/long-36b20r-s) · 40 Ah, 197×129×227 mm

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