# Fulbat B38-6A · Motorcycle battery 6V 13.7Ah 105A

![Fulbat B38-6A · Motorcycle battery 6V 13.7Ah 105A](https://bateriasonline.es/497-home_default/fulbat-b38-6a.jpg)

> Fulbat B38-6A: 13.7 Ah motorcycle battery, 105 A (EN), 119×83×161 mm, positive terminal on the left. Ask for a no-obligation quote.

**Category:** [Motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) → [Fulbat](https://bateriasonline.es/en/fulbat-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fulbat-b38-6a
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-B38-6A
- **MPN**: B38-6A
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Motorcycle DRY |
| Application | Motorcycles |
| Technology | Lead-acid |
| Voltage | 6 V |
| Capacity | 13.7 Ah |
| Cold cranking amps (EN) | 105 A |
| Length | 119 mm |
| Width | 83 mm |
| Height | 161 mm |
| Weight | 2.98 kg |
| Polarity | Positive terminal on the left |

## Quick description

The Fulbat B38-6A is a motorcycle battery with 6 V, 13.7 Ah and 105 A cold cranking current, measuring 119 × 83 × 161 mm, with the positive terminal on the left.

## Description

## Who the Fulbat B38-6A is for

The Fulbat B38-6A is a motorcycle starter battery: compact, vibration-resistant and with just the right power to turn the starter motor and feed the electronics. With 13.7 Ah, the B38-6A suits motorcycles and scooters that had a battery of that capacity.
At 13.7 Ah it goes into large-capacity motorcycles, adventure bikes, customs and quads. The B38-6A belongs to the Fulbat FULBAT Motorcycle DRY range. [The full range of Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Equivalents and alternatives to the Fulbat B38-6A

We have no other battery with exactly the dimensions and polarity of the B38-6A. Browse the rest of our [motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries) to compare close options.

## Check this before ordering the Fulbat B38-6A

- Length, width and height of the B38-6A: 119 × 83 × 161 mm.
- The B38-6A has the positive terminal on the left: compare it with your current battery.
- Capacity of the B38-6A: 13.7 Ah; the same as your current battery or slightly more is fine.
- Check the EN amps on your battery: if it says 105 A or less, the B38-6A covers your engine.

## Frequently asked questions about the Fulbat B38-6A

### How much does the Fulbat B38-6A weigh?

2.98 kg, with 13.7 Ah of capacity.

### What is the cold cranking current of the Fulbat B38-6A?

105 A to the EN standard, with 13.7 Ah capacity.

### Which side is the positive terminal on the Fulbat B38-6A?

On the B38-6A, the positive terminal is on the left with the terminals facing you: compare it with your current battery, because with reversed polarity the cables will not reach.

### Which charger does the Fulbat B38-6A need?

An automatic lead-acid charger with cut-off or maintenance mode, rated at 10 to 20% of its capacity in amps. If it is a vented type, check the electrolyte level and top up only with distilled water.

## Lead-acid technology in the B38-6A

The B38-6A is a conventional lead-acid battery, with plates immersed in liquid electrolyte. Avoid leaving them discharged, as they sulphate, and charge them with a charger that cuts off or switches to maintenance when finished.

## Other options if you are unsure about the B38-6A

- [More motorcycle batteries](https://bateriasonline.es/en/motorcycle-batteries)
- [The whole Fulbat range](https://bateriasonline.es/en/fulbat-batteries)

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