Ritar FT12-125 · Telecom battery 12V 125Ah AGM
Specifications
| Brand | RITAR |
|---|---|
| Part number | FT12-125 |
| Voltage (V) | 12 |
| Capacity (C20) | 125 |
| Capacity (C10) | 125Ah (c10) |
| Technology | AGM |
| Length | 552.00 mm |
| Width | 110.00 mm |
| Height | 239.00 mm |
€487.30
VAT included
4,76/5★★★★★11 reviewsVerified purchases
- ★★★★Oscar Hernandez:
Resolvieron todas mis dudas
- ★★★★★Alex Moya:
Recibí en plazo. Todo ok
- ★★★★★Lucas Ortega:
Recomiendo la web por su trato al momento de elegir
Ritar FT12-125 12V 125Ah is a front-terminal telecom battery: designed for cabinets and racks where servicing is done from the front.
Why this telecom 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
125 Ah
Dimensions
552×110×239 mm
Technology
AGM
Weight
36 kg
Model
RITAR FT
Stationary battery Ritar FT12-125 FT 125Ah 12V
12VVoltage
125AhCapacity
36kgWeight
Designed for UPS, alarms, telecoms and emergency lighting, the Ritar FT12-125 from the FT range offers 125 Ah with AGM technology on permanent float charge. It measures 552 × 110 × 239 mm, the format sought by anyone replacing a 125 Ah battery in UPS, alarm and emergency systems.
- Long float life under permanent charge.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
- Maintenance-free for its whole service life.
- Sealed and gas-free: suitable for cabinets and offices.
What the Ritar FT12-125 is for
With 125 Ah, the Ritar FT12-125 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 36 kg and M8 terminals.
Size, terminals and hold-down of the Ritar FT12-125
It has external dimensions of 552 × 110 × 239 mm and weighs 36 kg. It uses M8 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.
What Ritar does differently
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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.
The Ritar FT12-125: FT range and AGM technology
The FT12-125 is part of the Ritar FT range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.
In an AGM battery the electrolyte is absorbed in glass-fibre separators: there is no free liquid, it cannot spill and it can be mounted at an angle. That construction lowers internal resistance, speeds up recharging and multiplies cycle life compared with a conventional battery.
How to make it last longer
Replace all the batteries in the set at once and avoid environments continuously above 25 °C. Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators.
Official warranty
The Ritar FT12-125 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.
BCOM-RITAR-FT12-125
Data sheet
- Brand
- RITAR
- Reference
- FT12-125
- Model
- RITAR FT
- Voltage (V)
- 12
- Length
- 552.00 mm
- Width
- 110.00 mm
- Height
- 239.00 mm
- Weight
- 36 Kgs
- Technology
- AGM
- Terminal type
- M8
- Capacity (C20)
- 125
- Capacity (C10)
- 125Ah (c10)
Specific References
- MPN
- FT12-125
4,76/5
Verified purchasesLatest verified reviews
★★★★★Oscar Hernandez
14/02/2026Se interesan por el cliente
Resolvieron todas mis dudas
★★★★★Alex Moya
04/01/2026Increíble
Recibí en plazo. Todo ok
★★★★★Lucas Ortega
31/12/2025Un servicio genial
Recomiendo la web por su trato al momento de elegir
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 the Ritar FT12-125 an AGM battery and what are the benefits of AGM?
Yes. The FT12-125 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 FT12-125 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 FT12-125 battery last?
Expected lifespan of the Ritar FT12-125 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 size is this battery?
Dimensions (length × width × height) are 552×110×239 mm — also written as 552x110x239 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 Ritar FT12-125?
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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