# Deep-cycle battery Sonnenschein GF12051Y2 12V 56Ah GEL

![Deep-cycle battery Sonnenschein GF12051Y2 12V 56Ah GEL](https://baterias.com/4408-home_default/battery-sonnenschein-gf12051y2-12v-56ah.jpg)

> Sonnenschein GF12051Y2 deep-cycle battery 12V 56Ah GEL. Designed for deep discharges (80% DOD); ideal for solar, marine, caravan. 24-48 h delivery (mainland ES/PT).

**Category:** [Mobility Vehicle Batteries](https://baterias.com/gb/batteries-for-mobility-vehicles) → [Sonnenschein](https://baterias.com/gb/sonnenschein)

- **Canonical URL**: https://baterias.com/gb/battery-sonnenschein-gf12051y2-12v-56ah
- **Language**: en-GB
- **Brand**: Sonnenschein
- **Reference**: BATERIAS-SONNENSCHEIN-GF12051Y2
- **EAN**: 3661024500173
- **MPN**: GF12051Y2
- **Price**: 304,95 € (VAT incl., Spain)
- **Last updated**: 2026-10-28
- **Stock**: Out of stock

## Technical specifications

| Feature | Value |
|---|---|
| Peso | 20,80 kg |
| Tecnología | GEL |
| Terminal type | A-Terminal |
| Capacity (C20) | 56 Ah (c20) |
| Voltage (V) | 12 V |
| Capacity | 56 Ah |

## Quick description

**Sonnenschein GF12051Y2 12V 56Ah** is a deep-cycle battery optimised for repeated discharges down to 80 % DOD and thousands of life cycles. Ideal when the battery discharges and recharges daily rather than just cranking the engine (mobility scooters, backup systems, golf, pallet trucks).

## Why this deep-cycle battery?

- **Daily cycling without wear** handles deep discharges without losing capacity
- **Sealed AGM/GEL** no maintenance, no risk of spills
- **Thousands of useful cycles** over its full lifetime

🔌 Voltage
12 V

⚡ Capacity
56 Ah C20

📏 Dimensions
278×175×190 mm

⚙️ Technology
Gel

⚖️ Weight
20,8 kg

🏷️ Model
GEL - GF -Y Sonnenschein Cyclic range 450 cycles

## Description

## Mobility battery Sonnenschein GF12051Y2 56Ah 12V

12*V* Voltage
56*Ah* Capacity
20.80*kg* Weight

Designed for power wheelchairs, mobility scooters and light electric vehicles, the **Sonnenschein GF12051Y2** offers **56 Ah** of deep-cycle capacity with GEL technology. Its 278 × 175 × 190 mm make it the exact replacement for the 56 Ah battery fitted as standard to many power wheelchairs and mobility scooters.
- Approved for air and sea transport (VRLA).
- No maintenance, no water top-ups.
- Sealed AGM/GEL: safe indoors and in transport.
- GEL: excellent resistance to deep discharge and long cycle life.

### What the Sonnenschein GF12051Y2 is for

The Sonnenschein GF12051Y2 is the usual replacement in power wheelchairs, mobility scooters and light electric vehicles. Recharge after each use and avoid leaving it discharged for days. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 20.80 kg and A-Terminal terminals.

### Technology inside the Sonnenschein GF12051Y2

Sonnenschein builds the GF12051Y2 to the same standards as the rest of its catalogue; what changes between references is capacity, format and terminal position.
GEL technology fixes the acid in a solid gel. That removes maintenance and leaks and gives very long cycle life, in exchange for slightly slower recharging and lower peak current than an AGM.

### Dimensions, polarity and mounting

It has external dimensions of 278 × 175 × 190 mm and weighs 20.80 kg. It uses A-Terminal terminals, the system that anchors and connects it in the vehicle. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.

### Why choose Sonnenschein batteries

Sonnenschein batteries with dryfit® technology have equipped power wheelchairs, cleaning machines and industrial vehicles for decades thanks to their reliability and cycle life. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

### How to make it last longer

Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together. GEL batteries need lower charging voltages: always use a charger with a GEL mode so as not to damage the electrolyte.

### Warranty and coverage

The Sonnenschein GF12051Y2 comes with the **manufacturer's official warranty** against manufacturing defects. If it fails through a defect within the warranty period, we replace it at no cost to you.

### Delivery times and returns

Same-day dispatch from our warehouse for in-stock orders placed **before 6:00 pm**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **14 days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.

## Frequently asked questions

### Is the GF12051Y2 model a gel battery? Where is it used?

Yes, this model is a GEL battery: sealed lead-acid with the electrolyte in gel form. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). It needs a GEL-specific smart charger: its maximum charge voltage is lower than that of an AGM.

### What are the dimensions of the Sonnenschein GF12051Y2 battery?

Length × width × height: 278x175x190 mm (L3 case). Height is measured to the top of the terminals. Measure your device's battery tray first; if the battery exceeds it by even a millimetre, the hold-down clamp may not close.

### Sonnenschein GF12051Y2 or Sonnenschein GF12051Y1: which one to choose?

It has the same dimensions, voltage and technology as the GF12051Y2, although it is not a manufacturer-approved equivalent. Compared with the GF12051Y2 it has the same Ah and cranking power. It costs 4,55 € less. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.

### Sonnenschein GF12051Y2 or Sonnenschein GF12051YG1: which one to choose?

It has the same dimensions, voltage and technology as the GF12051Y2, although it is not a manufacturer-approved equivalent. Compared with the GF12051Y2 it has the same Ah and cranking power. It costs 4,65 € more. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap.


## Technical team (editorial authorship)

The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — automotive battery specialists since 2012.

→ https://baterias.com/gb/technical-team

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*baterias.com — Automotive batteries · 2026-11-07*