Sonnenschein GF12051Y1 · Deep-cycle battery 12V 56Ah GEL
Specifications
| Brand | Sonnenschein |
|---|---|
| Part number | GF12051Y1 |
| Voltage (V) | 12V |
| Capacity (C20) | 56Ah (c20) |
| Capacity | 56Ah |
| Technology | GEL |
| Weight | 22,00 |
| Terminal type | AP |
| EAN | 3661024500166 |
€300.40
VAT included
Sonnenschein GF12051Y1 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 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
276×175×190 mm
Technology
Gel
Weight
22 kg
Model
GEL - GF -Y Sonnenschein Cyclic range 450 cycles
Mobility battery Sonnenschein GF12051Y1 56Ah 12V
12VVoltage
56AhCapacity
22kgWeight
The Sonnenschein GF12051Y1 with GEL technology delivers 56 Ah at 12 V with the cycle life that power wheelchairs, mobility scooters and light electric vehicles demand. 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 GF12051Y1 is for
With 56 Ah, the Sonnenschein GF12051Y1 offers the daily range that power wheelchairs, mobility scooters and light electric vehicles need, with a sealed construction that is safe indoors. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 22 kg and AP terminals.
Technology inside the Sonnenschein GF12051Y1
The GF12051Y1 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.
Will it fit your current battery tray?
The Sonnenschein GF12051Y1 is made in the 276 × 175 × 190 mm format and weighs 22 kg. It uses AP terminals, the system that anchors and connects it in the vehicle. Before replacing it, measure your current battery tray: if all three dimensions and the terminal positions match, the swap is direct and needs no adapters.
Sonnenschein: the maker behind the GF12051Y1
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.
How to make it last longer
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 GF12051Y1 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.
BATERIAS-SONNENSCHEIN-GF12051Y1
Data sheet
- Weight
- 22,00
- Technology
- GEL
- Terminal type
- AP
- Capacity (C20)
- 56Ah (c20)
- Voltage (V)
- 12V
- Capacity
- 56Ah
Specific References
- EAN13
- 3661024500166
- MPN
- GF12051Y1
Codes and references Sonnenschein GF12051Y1
| Brand | Sonnenschein |
|---|---|
| Manufacturer reference (MPN) | GF12051Y1 |
| EAN-13 barcode | 3661024500166 |
| European case size (EN 50342-2) | L3 |
| Dimensions (length × width × height) | 276 × 175 × 190 mm (276x175x190) |
Recommended accessories
How to change the battery
Guide to replace a cyclic battery (12V 4-30Ah) for UPS, mobility scooter, alarm or backup device. Estimated time 10-15 minutes. Important: discharge residual voltage before handling.
Step 1. Power off and unplug the device
Unplug the device (UPS, scooter, alarm) and leave it off for at least 30 seconds to discharge residual capacitor voltage. Work on an insulating surface.
Step 2. Locate the battery compartment
Usually under the seat (mobility scooter/wheelchair), in the rear module of the UPS, or behind a side panel with screws. Check the device manual for unusual models.
Step 3. Disconnect the negative (−) first
With insulated gloves, remove the negative (−) cable first. Some UPS have protection fuses — note their position before removing.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery
Typical weight 1-15 kg depending on capacity. Many cyclic batteries are AGM/GEL — keep them upright. Do NOT invert the battery: even sealed, residue may exist.
Step 6. Fit the new battery
Same orientation and type (AGM, GEL or flooded). Polarity must match the device, not a chassis (this is not a car). Make sure terminals do not touch metal parts of the compartment.
Step 7. Connect the positive (+) first
On cyclic devices the order is reversed compared to cars: positive (+) first, negative (−) afterwards. Tighten without forcing — the plastic terminal housing of cyclic batteries damages easily.
Step 8. Initial charge before first use
Cyclic batteries ship at 60-80%. Before first use, connect the device charger for 8-12 hours (or use an AGM/GEL smart charger if available). This avoids short cycles and extends lifespan.
Frequently asked questions
Is this battery GEL? What is the typical use?
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 do I fit the GF12051Y1 model in my device?
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 this page. 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 GF12051Y1 battery last?
Expected lifespan of the Sonnenschein GF12051Y1 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 GF12051Y1 battery?
Dimensions (length × width × height) are 276×175×190 mm — also written as 276x175x190 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 GF12051Y1?
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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