Q-battery 12SEM-225 · Caravan battery 12V 225Ah
Specifications
| Brand | Q-battery |
|---|---|
| Part number | 12SEM-225 |
| Voltage (V) | 12 |
| Capacity (C20) | 225Ah (c20) |
| Technology | Lead-acid |
| Length | 518.00 cm |
| Width | 276.00 cm |
| Height | 242.00 cm |
| Weight | 62.00 Kgs |
€512.70
VAT included
Q-battery 12SEM-225 12V 225Ah is a leisure battery for campers, motorhomes and caravans. Designed to power the entire interior kit (fridge, heater, water pump, USB, LED lighting) for several days off-grid, with no need to plug into a campsite hookup.
Why this caravan battery?
- Real off-grid autonomyno campsite hookup needed
- Lasts the whole seasonhandles daily discharges without capacity loss
- Powers it all at oncefridge, water pump, LED and USB without issues
Voltage
12 V
Capacity
225 Ah
Dimensions
518×276×242 mm
Technology
Lead-acid
Polarity
Positive on the left
Weight
62 kg
Model
SEMITRACTION BATTERY
Mobility battery Q-Battery 12SEM-225 Semitraction Battery 225Ah 12V
12VVoltage
225AhCapacity
62kgWeight
The 12 V, 225 Ah Q-Battery 12SEM-225 from the Semitraction Battery range with conventional lead-acid technology is the standard replacement for power wheelchairs, mobility scooters and light electric vehicles. Measuring 518 × 276 × 242 mm and the positive terminal on the left, it is the direct replacement for power wheelchairs and mobility scooters fitted from the factory with a 225 Ah battery of this format.
- No maintenance, no water top-ups.
- Approved for air and sea transport (VRLA).
- Good balance of capacity, cranking power and price.
- Sealed AGM/GEL: safe indoors and in transport.
What the Q-Battery 12SEM-225 is for
The Q-Battery 12SEM-225 is designed for power wheelchairs, mobility scooters and light electric vehicles. Wheelchairs and scooters normally use two identical batteries in series: replace them together. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 62 kg, A-Pole terminals and B0 hold-down.
Dimensions, polarity and mounting
It has external dimensions of 518 × 276 × 242 mm and weighs 62 kg. The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses a B0 hold-down and A-Pole 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.
The Q-Battery 12SEM-225: Semitraction Battery range and conventional lead-acid technology
Within the Q-Battery catalogue, the Semitraction Battery series groups the references designed for this use. The 12SEM-225 is the 225 Ah model of that family, with the same performance as its siblings in other sizes.
Conventional lead-acid is the benchmark against which other technologies are compared: good cranking current, great tolerance to alternator charging and the best price per amp-hour.
Why choose Q-Battery batteries
The Q-Battery catalogue runs from small alarm batteries to large traction monoblocs, always with sealed, maintenance-free technology. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.
Warranty and coverage
The Q-Battery 12SEM-225 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.
Usage and maintenance tips
On batteries with filler caps, check the electrolyte level and top up only with distilled water. Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity.
When you get it and how to return it
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.
BCOM-Q-BATTERY-12SEM-225
Data sheet
- Brand
- Q-Battery
- Reference
- 12SEM-225
- Model
- SEMITRACTION BATTERY
- Voltage (V)
- 12
- Length
- 518.00 cm
- Width
- 276.00 cm
- Height
- 242.00 cm
- Weight
- 62.00 Kgs
- Technology
- Lead-acid
- Terminal layout
- Positive terminal on the left
- Terminal type
- A-Pole
- Hold-down
- B0
- Capacity (C20)
- 225Ah (c20)
Specific References
- MPN
- 12SEM-225
Comparison: Q-battery BATTERY-12SEM-225 vs equivalents
The Q-battery BATTERY-12SEM-225 is interchangeable with these equivalent references: N5 (Varta), N2 (Varta).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Q-battery
BATTERY-12SEM-225
This battery
|
12V 225Ah | Lead-acid | €512.70 |
Varta
N5
|
12V 220Ah 1150A | Lead-acid | €286.20 |
Varta
N2
|
12V 200Ah 1050A | Lead-acid | €283.20 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
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
How do I change this battery step by step?
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 Q-battery 12SEM-225 battery last?
Expected lifespan of the Q-battery 12SEM-225 is 4 to 6 years in regular device use without Start-Stop. 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 measurements of the 12SEM-225 model?
Dimensions (length × width × height) are 518×276×242 mm — also written as 518x276x242 mm — 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 Q-battery 12SEM-225?
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.
The top-rated online battery store in Spain
-
Audited by Trustpilot, no filters, no edits. The top-rated battery store in Spain.
Trustpilot · verified, no filters
-
Official Varta distributor
Official Varta wholesale distributor. 100% genuine batteries, recently manufactured, best price and no middlemen.
World’s best-selling battery brand
-
+100,000 satisfied customers
More than 100,000 customers already trust baterias.com — and recommend us to their friends and family.
They trust us and recommend us
Choose trust, choose quality, choose baterias.com.