# Deep-cycle battery Sonnenschein GF12051YG1 12V 56Ah GEL ![Deep-cycle battery Sonnenschein GF12051YG1 12V 56Ah GEL](https://baterias.com/4409-home_default/battery-sonnenschein-gf12051yg1-12v-56ah.jpg) > Sonnenschein GF12051YG1 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-gf12051yg1-12v-56ah - **Language**: en-GB - **Brand**: Sonnenschein - **Reference**: BATERIAS-SONNENSCHEIN-GF12051YG1 - **MPN**: GF12051YG1 - **Price**: 309,60 € (VAT incl., Spain) - **Last updated**: 2026-10-28 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Peso | 22,00 kg | | Tecnología | GEL | | Terminal type | F4 | | Capacity (C20) | 56 Ah (c20) | | Voltage (V) | 12 V | | Capacity | 56 Ah | ## Quick description **Sonnenschein GF12051YG1 12V 56Ah** is a deep-cycle battery built to be discharged and recharged daily without losing capacity. Its reinforced grid and AGM/GEL separator extend the number of useful cycles well beyond a conventional starter battery. ## 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 276×175×190 mm ⚙️ Technology Gel ⚖️ Weight 22 kg 🏷️ Model GEL - GF -Y Sonnenschein Cyclic range 450 cycles ## Description ## Mobility battery Sonnenschein GF12051YG1 56Ah 12V 12*V* Voltage 56*Ah* Capacity 22*kg* Weight Designed for power wheelchairs, mobility scooters and light electric vehicles, the **Sonnenschein GF12051YG1** offers **56 Ah** of deep-cycle capacity with GEL technology. Its 276 × 175 × 190 mm make it the exact replacement for the 56 Ah battery fitted as standard to many power wheelchairs and mobility scooters. - Sealed AGM/GEL: safe indoors and in transport. - GEL: excellent resistance to deep discharge and long cycle life. - Approved for air and sea transport (VRLA). - No maintenance, no water top-ups. ### What the Sonnenschein GF12051YG1 is for The Sonnenschein GF12051YG1 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 22 kg and F4 terminals. ### Technology inside the Sonnenschein GF12051YG1 The GF12051YG1 is one of the Sonnenschein references for this type of use; it shares the same manufacturing and quality-control criteria as the rest of the brand's catalogue. 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 276 × 175 × 190 mm and weighs 22 kg. It uses F4 terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery. ### 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. All the Sonnenschein batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Usage and maintenance tips Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity. Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together. ### Warranty and coverage The Sonnenschein GF12051YG1 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. ### Shipping, delivery and returns Order **before 6:00 pm** with stock available and it leaves today: mainland Spain and Portugal receive it in 24-48 working hours, the islands and the rest of the EU in 3 to 5 days. You have **14 days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### Is the Sonnenschein GF12051YG1 a GEL battery? What is GEL used for? Yes. The Sonnenschein GF12051YG1 is GEL: sealed lead-acid in which the electrolyte is a gel. Take care when charging: it requires a smart charger with a GEL mode, because it accepts a lower charge voltage than an AGM. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). ### What are the measurements of the GF12051YG1 model? Check the room available in your device, because a single millimetre too much can stop the clamp from closing. Its dimensions are 276×175×190 mm, also written 276x175x190 mm; the height already includes the terminals. In European terms it is a L3 case. ### Sonnenschein GF12051YG1 or Sonnenschein GF12051Y1: which one to choose? It has the same dimensions, voltage and technology as the GF12051YG1, although it is not a manufacturer-approved equivalent. Compared with the GF12051YG1 it has the same Ah and cranking power. It costs 9,20 € less. Check the positive terminal side and the original capacity before ordering; otherwise it is a straight swap. ### Sonnenschein GF12051YG1 or Sonnenschein GF12051Y2: which one to choose? Same case and same technology as the GF12051YG1: an alternative by size, not an official equivalent. Compared with the GF12051YG1 it has the same Ah and cranking power. It costs 4,65 € less. If the polarity matches and your equipment had a similar capacity, it works as a replacement; if in doubt, ask us with your model. ## 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 --- *baterias.com — Automotive batteries · 2026-11-11*