# Fulbat U1-9 · Lawn mower battery 12V 25.3Ah 240A

![Fulbat U1-9 · Lawn mower battery 12V 25.3Ah 240A](https://bateriasonline.es/590-home_default/fulbat-u1-9.jpg)

> Fulbat U1-9: 25.3 Ah lawn mower battery, 240 A (EN), 195×130×180 mm, positive terminal on the left. Equivalent to Exide U1-9. Ask for a no-obligation quote.

**Category:** [Lawn mower and garden machinery batteries](https://bateriasonline.es/en/lawn-mower-garden-batteries) → [Fulbat](https://bateriasonline.es/en/fulbat-batteries)

- **Canonical URL**: https://bateriasonline.es/en/fulbat-u1-9
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-U1-9
- **MPN**: U1-9
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Lawn & Garden DRY |
| Application | Lawn mowers and garden machinery |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 25.3 Ah |
| Cold cranking amps (EN) | 240 A |
| Length | 195 mm |
| Width | 130 mm |
| Height | 180 mm |
| Weight | 7.88 kg |
| Polarity | Positive terminal on the left |

## Quick description

The Fulbat U1-9 is a lawn mower battery with 12 V, 25.3 Ah and 240 A cold cranking current, measuring 195 × 130 × 180 mm, with the positive terminal on the left. Need the positive terminal on the right? The same battery is the Fulbat U1R-9.

## Description

## Where the Fulbat U1-9 fits

The Fulbat U1-9 is a starter battery for ride-on mowers and garden machinery: small, 12 V and with enough cranking power for single-cylinder engines. Check polarity and terminal type: garden machinery uses several formats.
The U1-9 belongs to the Fulbat FULBAT Lawn & Garden DRY range. [See all Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Equivalents and alternatives to the Fulbat U1-9

Same dimensions and polarity as the U1-9, with similar capacity and cranking power; as a conventional battery, the U1-9 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) |
|---|---|---|---|---|
| Exide U1-9 | Lead-acid | 24 Ah | 240 A | 195 × 130 × 180 |

## Fulbat U1-9 vs U1-9 Ca/Ca, U1R-9 and U1-9 SLA: which one to choose?

Torn between the U1-9 and another similar Fulbat? This is what changes:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat U1-9 (this one) | 25.3 Ah | 240 A | 195 × 130 × 180 | left | 7.88 kg |
| Fulbat U1-9 Ca/Ca | 28 Ah | 300 A | 195 × 130 × 180 | left | 7.4 kg |
| Fulbat U1R-9 | 25.3 Ah | 240 A | 195 × 130 × 180 | right | 7.88 kg |
| Fulbat U1-9 SLA | 28 Ah | 300 A | 195 × 125 × 176 | left | 6.45 kg |

- Fulbat U1-9 Ca/Ca: 2.70 Ah more, 60 A more cranking power, the same dimensions.
- The Fulbat U1R-9 is the same battery with the positive terminal on the other side: choose it if your current battery has the positive terminal on the right.
- Fulbat U1-9 SLA: 2.70 Ah more, 60 A more cranking power, a different case (195 × 125 × 176 mm), AGM technology.

## Lead-acid technology in the U1-9

The U1-9 is a conventional lead-acid battery, with plates immersed in liquid electrolyte. In cars without energy management, the U1-9 needs no special registration: just connect it.

## What to look at before buying the U1-9

- The U1-9 needs 195 × 130 × 180 mm of space: measure it with the hold-down clamp in place.
- Polarity of the U1-9: positive terminal on the left (if yours has it on the other side, the cables will not reach).
- Your current battery should say about 25.3 Ah; a little more is also fine.
- The U1-9 delivers 240 A cold cranking (EN standard); do not go below what your original battery states.

## Fulbat U1-9 codes and part numbers

Look for any of these U1-9 codes on your current battery or in the manufacturer's catalogue:

| Commercial reference | U1-9 |
|---|---|
| Not to be confused with | Fulbat U1R-9 (25.3 Ah, 240 A, positive terminal on the right) |

## Frequently asked questions about the Fulbat U1-9

### Fulbat U1-9 or U1-9 Ca/Ca?

Compared with the U1-9, the Fulbat U1-9 Ca/Ca has 2.70 Ah more and 60 A more cranking power. If your current battery says 300 A or more, choose the U1-9 Ca/Ca; if it says 240 A or less, the U1-9 is enough. Both measure 195 × 130 × 180 mm, so they fit the same tray.

### What is the difference between the Fulbat U1-9 and the U1R-9?

They are the same battery with the terminals swapped: positive terminal on the left on the U1-9, positive terminal on the right on the U1R-9. Look at your current battery with the terminals facing you and pick the one that matches.

### How much does the Fulbat U1-9 weigh?

The U1-9 weighs 7.88 kg. For reference, the Fulbat U1-9 Ca/Ca (28 Ah) weighs 7.4 kg.

### Which battery is equivalent to the Fulbat U1-9?

With the same dimensions, polarity and similar capacity you have the Exide U1-9. As the U1-9 is a conventional battery, an EFB or AGM of the same size also works.

### Why is the mower battery dead every spring?

Because it spends the winter discharging. Charge it before storing the machine and give it a maintenance charge every two months, or disconnect it.

## Other options if you are unsure about the U1-9

- [More lawn mower and garden machinery batteries](https://bateriasonline.es/en/lawn-mower-garden-batteries)
- [Full Fulbat catalogue](https://bateriasonline.es/en/fulbat-batteries)
- [Exide U1-9](https://bateriasonline.es/en/exide-u1-9) · 24 Ah, 240 A, 195×130×180 mm

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