Sonnenschein GF12051Y2 · Deep-cycle battery 12V 56Ah GEL
Specifications
| Brand | Sonnenschein |
|---|---|
| Part number | GF12051Y2 |
| Voltage (V) | 12V |
| Capacity (C20) | 56Ah (c20) |
| Capacity | 56Ah |
| Technology | GEL |
| Weight | 20,80 |
| Terminal type | A-Terminal |
| EAN | 3661024500173 |
€304.95
VAT included
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 wearhandles deep discharges without losing capacity
- Sealed AGM/GELno maintenance, no risk of spills
- Thousands of useful cyclesover its full lifetime
Voltage
12 V
Capacity
56 Ah
Dimensions
278×175×190 mm
Technology
Gel
Weight
20,8 kg
Model
GEL - GF -Y Sonnenschein Cyclic range 450 cycles
Mobility battery Sonnenschein GF12051Y2 56Ah 12V
12VVoltage
56AhCapacity
20.80kgWeight
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.
BATERIAS-SONNENSCHEIN-GF12051Y2
Data sheet
- Weight
- 20,80
- Technology
- GEL
- Terminal type
- A-Terminal
- Capacity (C20)
- 56Ah (c20)
- Voltage (V)
- 12V
- Capacity
- 56Ah
Specific References
- EAN13
- 3661024500173
- MPN
- GF12051Y2
Codes and references Sonnenschein GF12051Y2
| Brand | Sonnenschein |
|---|---|
| Manufacturer part number (MPN) | GF12051Y2 |
| EAN-13 barcode | 3661024500173 |
| European case size (EN 50342-2) | L3 |
| Dimensions (length × width × height) | 278 × 175 × 190 mm (278x175x190) |
Recommended accessories
Frequently asked questions
Is the GF12051Y2 model a gel battery? Where is it used?
Yes, this model is a GEL battery: sealed lead-acid where the electrolyte is in gel form. It tolerates deep discharges very well and is ideal for cyclic use (solar, motorhomes, electric wheelchairs, motorcycles). Requires a GEL-specific smart charger — max charge voltage ~14.1 V (vs 14.4-14.7 V for AGM). Lifespan 6-10 years.
How is the Sonnenschein GF12051Y2 battery installed in the vehicle?
In most devices it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on our blog. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On devices with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
How long does the Sonnenschein GF12051Y2 battery last?
Expected lifespan of the Sonnenschein GF12051Y2 is 6 to 10 years in cyclic use (marine, caravan, solar) with controlled discharges. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.
What are the dimensions of the Sonnenschein GF12051Y2 battery?
Dimensions (length × width × height) are 278×175×190 mm — also written as 278x175x190 mm and correspond to the European L3 case size — following the European DIN standard. Always measure the space in your device before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.
Which batteries are equivalent to the Sonnenschein GF12051Y2?
Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop devices. See the "Equivalents" section to view recommended options at the same performance level.
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