Ritar RT12120 · Stationary UPS battery 12V 12Ah AGM
Specifications
| Brand | RITAR |
|---|---|
| Part number | RT12120 |
| Voltage (V) | 12 |
| Capacity (C20) | 12Ah (c20) |
| Technology | AGM |
| Length | 151.00 mm |
| Width | 98.00 mm |
| Height | 101.00 mm |
| Terminal type | F1/F2 |
€66.10
VAT included
4,80/5★★★★★31 reviewsVerified purchases
- ★★★★★Joaquin Cano:
No sabía qué batería llevaba mi coche y me ayudaron a seleccionarla
- ★★★★Xavier Saez:
Esta web es la mejor, encontré lo que buscaba, llegó en menos de 24hrs y cuando llamé por una duda que tenía me ayudaron con la instalación
- ★★★★★Jose Miguel Gutierrez:
Necesitaba con urgencia una batería de coche y me llegó al día siguiente de pedirla
Reviews originally written in Spanish
See all 31 reviewsRitar RT12120 12V 12Ah is a stationary battery for backup power systems: UPS, alarms, telecom and emergency lighting. Long float-life under permanent charge and instant response to mains outages with no noticeable voltage drop.
Why this stationary battery?
- Instant responsewhen the mains drop, no voltage dip
- Long life under 24/7 chargeoptimised for permanent service
- Compatible with your systemexisting UPS units and alarm control panels
Voltage
12 V
Capacity
12 Ah
Dimensions
151×98×101 mm
Technology
AGM
Weight
3,5 kg
Model
RITAR RT
Stationary battery Ritar RT12120 RT 12Ah 12V
12VVoltage
12AhCapacity
3.50kgWeight
The 12 V, 12 Ah Ritar RT12120 stationary battery from the RT range with AGM technology is designed for UPS, alarms, telecoms and emergency lighting. Its 151 × 98 × 101 mm make it the exact replacement for the 12 Ah battery fitted as standard to many UPS, alarm and emergency systems.
- Instant response to mains failures.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- Standard format for UPS and emergency systems.
- Low self-discharge and high reliability.
What the Ritar RT12120 is for
With 12 Ah, the Ritar RT12120 gives your UPS or emergency system the autonomy it needs. Replace all the batteries in the set at once. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 3.50 kg and F1/F2 terminals.
Dimensions, polarity and mounting
The Ritar RT12120 is made in the 151 × 98 × 101 mm format and weighs 3.50 kg. It uses F1/F2 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.
Why choose Ritar batteries
With more than twenty years making sealed lead batteries, Ritar offers general-purpose, long-life, high-rate and front-terminal ranges for every stationary application. All the Ritar batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.
The Ritar RT12120: RT range and AGM technology
Within the Ritar catalogue, the RT series groups the references designed for this use. The RT12120 is the 12 Ah model of that family, with the same performance as its siblings in other sizes.
AGM (Absorbent Glass Mat) technology seals the electrolyte in glass microfibre. The result is a maintenance-free battery that is highly vibration-resistant and able to withstand deep discharges that would ruin a classic lead-acid battery.
Care and maintenance
Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. Check the float voltage of the UPS or charger: a voltage that is too high shortens the life of a sealed battery.
Official warranty
The Ritar RT12120 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
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-RITAR-RT12120
Data sheet
- Brand
- RITAR
- Reference
- RT12120
- Model
- RITAR RT
- Voltage (V)
- 12
- Length
- 151.00 mm
- Width
- 98.00 mm
- Height
- 101.00 mm
- Technology
- AGM
- Terminal type
- F1/F2
- Capacity (C20)
- 12Ah (c20)
Specific References
- MPN
- RT12120
4,80/5
Verified purchasesLatest verified reviews
Reviews originally written in Spanish
★★★★★Joaquin Cano
17/07/2026Gracias por su asesoramiento
No sabía qué batería llevaba mi coche y me ayudaron a seleccionarla
★★★★★Xavier Saez
13/02/2026Pude instalarla gracias a su asesoramiento
Esta web es la mejor, encontré lo que buscaba, llegó en menos de 24hrs y cuando llamé por una duda que tenía me ayudaron con la instalación
★★★★★Jose Miguel Gutierrez
28/12/2025Encontré lo que buscaba
Necesitaba con urgencia una batería de coche y me llegó al día siguiente de pedirla
★★★★★Manuel Ramos
17/11/2025Muy buen asesoramiento
No sabía qué bateria llevaba mi coche y me ayudaron a seleccionarla
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 AGM? What is it for?
Yes. The RT12120 from Ritar uses AGM (Absorbent Glass Mat) technology: a sealed lead-acid battery where the electrolyte is absorbed in a glass-fibre mat. It withstands more charge/discharge cycles than a conventional one, handles heat better and is the required technology for devices with advanced Start-Stop and regenerative braking. Expected lifespan: 5-8 years under normal conditions.
How do I fit the RT12120 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 Ritar RT12120 battery last?
Expected lifespan of the Ritar RT12120 is 5 to 8 years in mild-climate device use with 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 RT12120 model?
Dimensions (length × width × height) are 151×98×101 mm — also written as 151x98x101 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 interchangeable batteries are there for this one?
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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