# Fulbat U1R-12 SLA · Lawn mower battery 12V 32Ah 400A

![Fulbat U1R-12 SLA · Lawn mower battery 12V 32Ah 400A](https://bateriasonline.es/634-home_default/fulbat-u1r-12-sla.jpg)

> Fulbat U1R-12 SLA: 32 Ah lawn mower battery, 400 A (EN), 195×125×176 mm, positive terminal on the right, AGM. 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-u1r-12-sla
- **Language**: en
- **Brand**: Fulbat
- **Reference**: BOL-FULBAT-U1R-12 SLA
- **MPN**: U1R-12 SLA
- **Last updated**: 2026-10-27

## Technical specifications

| Feature | Value |
|---|---|
| Brand | Fulbat |
| Range | FULBAT Lawn & Garden SLA |
| Application | Lawn mowers and garden machinery |
| Technology | AGM |
| Voltage | 12 V |
| Capacity | 32 Ah |
| Cold cranking amps (EN) | 400 A |
| Length | 195 mm |
| Width | 125 mm |
| Height | 176 mm |
| Weight | 6.7 kg |
| Polarity | Positive terminal on the right |

## Quick description

The Fulbat U1R-12 SLA is a lawn mower battery with 12 V, 32 Ah and 400 A cold cranking current, measuring 195 × 125 × 176 mm, with the positive terminal on the right. Need the positive terminal on the left? The same battery is the Fulbat U1-12 SLA.

## Description

## Who the Fulbat U1R-12 SLA is for

The Fulbat U1R-12 SLA 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 U1R-12 SLA belongs to the Fulbat FULBAT Lawn & Garden SLA range. [The full range of Fulbat batteries](https://bateriasonline.es/en/fulbat-batteries)

## Inside the U1R-12 SLA: AGM technology

The U1R-12 SLA is AGM: the electrolyte is absorbed in glass fibre mats, so it is sealed and spill-proof. It withstands many more cycles than a conventional lead battery, at the cost of being more sensitive to overcharging.

## Fulbat U1R-12 SLA vs U1R-9 SLA, U1-12 SLA and SLA12-22: differences

How the U1R-12 SLA compares with Fulbat batteries of similar size and capacity:

| Model | Capacity | Cold cranking (EN) | Dimensions (mm) | Positive | Weight |
|---|---|---|---|---|---|
| Fulbat U1R-12 SLA (this one) | 32 Ah | 400 A | 195 × 125 × 176 | right | 6.7 kg |
| Fulbat U1R-9 SLA | 28 Ah | 300 A | 195 × 125 × 176 | right | 6.45 kg |
| Fulbat U1-12 SLA | 32 Ah | 400 A | 195 × 125 × 176 | left | 6.7 kg |
| Fulbat SLA12-22 | 23.1 Ah | 210 A | 182 × 77 × 168 | right | 6.3 kg |

- Fulbat U1R-9 SLA: 4 Ah less, 100 A less cranking power, the same dimensions.
- The Fulbat U1-12 SLA is the same battery with the positive terminal on the other side: choose it if your current battery has the positive terminal on the left.
- Fulbat SLA12-22: 8.90 Ah less, 190 A less cranking power, a different case (182 × 77 × 168 mm).

## Equivalents and alternatives to the Fulbat U1R-12 SLA

We have no other battery with exactly the dimensions and polarity of the U1R-12 SLA. 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 U1R-12 SLA

The U1R-12 SLA is listed under these codes on labels, in garages and in catalogues:

| Commercial reference | U1R-12 SLA |
|---|---|
| Not to be confused with | Fulbat U1-12 SLA (32 Ah, 400 A, positive terminal on the left) |

## Before ordering the U1R-12 SLA, check this

- The U1R-12 SLA delivers 400 A cold cranking (EN standard); do not go below what your original battery states.
- Your current battery should say about 32 Ah; a little more is also fine.
- With the terminals facing you, the positive terminal of the U1R-12 SLA is on the right.
- The U1R-12 SLA needs 195 × 125 × 176 mm of space: measure it with the hold-down clamp in place.

## Frequently asked questions about the Fulbat U1R-12 SLA

### U1R-12 SLA or U1R-9 SLA: which one suits me?

Compared with the U1R-12 SLA, the Fulbat U1R-9 SLA has 4 Ah less and 100 A less cranking power. The U1R-12 SLA cranks harder; the U1R-9 SLA is only a good option if your original battery says 300 A or less. Both measure 195 × 125 × 176 mm, so they fit the same tray.

### Fulbat U1R-12 SLA or U1-12 SLA: what is the difference?

Only the polarity: the U1R-12 SLA has the positive terminal on the right and the U1-12 SLA the positive terminal on the left. Capacity (32 Ah), cranking power and dimensions are identical.

### How much does the Fulbat U1R-12 SLA weigh?

6.7 kg, with 32 Ah of capacity. For reference, the Fulbat U1R-9 SLA (28 Ah) weighs 6.45 kg.

### Can I use a motorcycle battery in the mower?

If voltage, dimensions, polarity and terminal type match, yes. Many garden batteries are the same format as motorcycle ones.

## Keep comparing: alternatives to the U1R-12 SLA

- [Other lawn mower and garden machinery batteries](https://bateriasonline.es/en/lawn-mower-garden-batteries)
- [Full Fulbat catalogue](https://bateriasonline.es/en/fulbat-batteries)

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