# Fulbat U1-9 Ca/Ca · Lawn mower battery 12V 28Ah 300A

![Fulbat U1-9 Ca/Ca · Lawn mower battery 12V 28Ah 300A](https://bateriasonline.es/601-home_default/fulbat-u1-9-ca-ca.jpg)

> Fulbat U1-9 Ca/Ca: 28 Ah lawn mower battery, 300 A (EN), 195×130×180 mm, positive terminal on the left. Price on request: ask for a free 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-ca-ca
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-U1-9 CA/CA
- **MPN**: U1-9 Ca/Ca
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Lawn & Garden Ca/Ca |
| Application | Lawn mowers and garden machinery |
| Technology | Lead-acid |
| Voltage | 12 V |
| Capacity | 28 Ah |
| Cold cranking amps (EN) | 300 A |
| Length | 195 mm |
| Width | 130 mm |
| Height | 180 mm |
| Weight | 7.4 kg |
| Polarity | Positive terminal on the left |

## Quick description

Fulbat U1-9 Ca/Ca: lawn mower battery with 12 V, 28 Ah and 300 A cold cranking current, measuring 195 × 130 × 180 mm, with the positive terminal on the left. With the positive terminal on the right, the exact counterpart is the Fulbat U1R-9 Ca/Ca.

## Description

## Who the Fulbat U1-9 Ca/Ca is for

The Fulbat U1-9 Ca/Ca starts ride-on mowers and garden tractors. Check polarity and terminal type: garden machinery uses several formats.
The U1-9 Ca/Ca belongs to the Fulbat FULBAT Lawn & Garden Ca/Ca range. [The full range of Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Lead-acid technology in the U1-9 Ca/Ca

Inside, the U1-9 Ca/Ca is classic lead-acid: liquid electrolyte and lead plates. If the U1-9 Ca/Ca is left discharged for weeks it sulphates: a maintenance charger prevents this.

## Fulbat U1-9 Ca/Ca vs U1-9, U1R-9 Ca/Ca and U1-9 SLA

The real differences between the U1-9 Ca/Ca and the closest Fulbat models:

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

- Fulbat U1-9: 2.70 Ah less, 60 A less cranking power, the same dimensions.
- If the positive terminal of your battery is on the other side, the one you need is the Fulbat U1R-9 Ca/Ca (positive terminal on the right).
- Fulbat U1-9 SLA: the same capacity, the same cranking power, a different case (195 × 125 × 176 mm), AGM technology.

## Equivalents and alternatives to the Fulbat U1-9 Ca/Ca

We have no other battery with exactly the dimensions and polarity of the U1-9 Ca/Ca. Browse the rest of our [lawn mower and garden machinery batteries](https://bateriasonline.es/en/lawn-mower-garden-batteries) to compare close options.

## Part numbers and codes for the Fulbat U1-9 Ca/Ca

This is how the Fulbat U1-9 Ca/Ca appears on the label and in parts catalogues:

| Commercial reference | U1-9 Ca/Ca |
|---|---|
| Not to be confused with | Fulbat U1R-9 Ca/Ca (28 Ah, 300 A, positive terminal on the right) |

## Check this before ordering the Fulbat U1-9 Ca/Ca

- The U1-9 Ca/Ca delivers 300 A cold cranking (EN standard); do not go below what your original battery states.
- With 28 Ah, the U1-9 Ca/Ca replaces an original battery of that capacity or slightly less.
- Polarity of the U1-9 Ca/Ca: positive terminal on the left (if yours has it on the other side, the cables will not reach).
- The U1-9 Ca/Ca needs 195 × 130 × 180 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the Fulbat U1-9 Ca/Ca

### U1-9 Ca/Ca or U1-9: which one suits me?

Compared with the U1-9 Ca/Ca, the Fulbat U1-9 has 2.70 Ah less and 60 A less cranking power. The U1-9 Ca/Ca cranks harder; the U1-9 is only a good option if your original battery says 240 A or less. Both measure 195 × 130 × 180 mm, so they fit the same tray.

### Fulbat U1-9 Ca/Ca or U1R-9 Ca/Ca: what is the difference?

Only the polarity: the U1-9 Ca/Ca has the positive terminal on the left and the U1R-9 Ca/Ca the positive terminal on the right. Capacity (28 Ah), cranking power and dimensions are identical.

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

7.4 kg, with 28 Ah of capacity. For reference, the Fulbat U1-9 (25.3 Ah) weighs 7.88 kg.

## Keep comparing: alternatives to the U1-9 Ca/Ca

- [All lawn mower and garden machinery batteries](https://bateriasonline.es/en/lawn-mower-garden-batteries)
- [The whole Fulbat range](https://bateriasonline.es/en/fulbat-batteries)

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