Ritar RL21500 · Stationary UPS battery 2V 1500Ah AGM
Specifications
| Brand | RITAR |
|---|---|
| Part number | RL21500 |
| Voltage (V) | 2 |
| Capacity (C20) | 1500 |
| Capacity (C10) | 1500Ah (c10) |
| Capacity (C5) | 1313Ah (c5) |
| Technology | AGM |
| Length | 355.00 mm |
| Width | 337.00 mm |
€875.95
VAT included
4,61/5★★★★★6 reviewsVerified purchases
- ★★★★★Ignacio Vega:
Me atendieron muy bien
- ★★★★Jordi Saez:
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Ritar RL21500 2V 1500Ah 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
2 V
Capacity
1500 Ah
Dimensions
355×337×342 mm
Technology
AGM
Weight
85 kg
Model
RITAR RL
Stationary battery Ritar RL21500 RL 1,500Ah 2V
2VVoltage
1,500AhCapacity
85kgWeight
Designed for UPS, alarms, telecoms and emergency lighting, the Ritar RL21500 from the RL range offers 1,500 Ah with AGM technology on permanent float charge. Measuring 355 × 337 × 342 mm, it is the direct replacement for UPS, alarm and emergency systems fitted from the factory with a 1,500 Ah battery of this format.
- Low self-discharge and high reliability.
- Standard format for UPS and emergency systems.
- AGM: faster recharging and better cycle resistance than a conventional battery.
- Instant response to mains failures.
What the Ritar RL21500 is for
With 1,500 Ah, the Ritar RL21500 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 85 kg and F10(M8) terminals.
Size, terminals and hold-down of the Ritar RL21500
In terms of format, the Ritar RL21500 measures 355 × 337 × 342 mm (length × width × height) and weighs 85 kg. It uses F10(M8) 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.
Ritar: the maker behind the RL21500
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. We guarantee that every Ritar arrives new, charged and with the manufacturer's full warranty.
The Ritar RL21500: RL range and AGM technology
The RL21500 is part of the Ritar RL 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
Check the float voltage of the UPS or charger: a voltage that is too high shortens the life of a sealed battery. Replace all the batteries in the set at once and avoid environments continuously above 25 °C.
Warranty and coverage
The Ritar RL21500 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
Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic and Canary Islands and the rest of the European Union allow 3 to 5 working days. You have 14 days to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.
BCOM-RITAR-RL21500
Data sheet
- Brand
- RITAR
- Reference
- RL21500
- Model
- RITAR RL
- Voltage (V)
- 2
- Length
- 355.00 mm
- Width
- 337.00 mm
- Height
- 342.00 mm
- Weight
- 85 Kgs
- Technology
- AGM
- Terminal type
- F10(M8)
- Capacity (C20)
- 1500
- Capacity (C10)
- 1500Ah (c10)
- Capacity (C5)
- 1313Ah (c5)
Specific References
- MPN
- RL21500
4,61/5
Verified purchasesLatest verified reviews
★★★★★Ignacio Vega
22/01/2026Servicio ideal
Me atendieron muy bien
★★★★★Jordi Saez
11/01/2026Me atendieron por whatsapp de 10
Antes de realizar algun pedido en otra web llamen a los de baterias.com, te atienden estupendamente y te asesoran en todo lo que necesites
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 RL21500 an AGM battery and what are the benefits of AGM?
Yes. The RL21500 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 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.
What is the service life of the RL21500 model?
Expected lifespan of the Ritar RL21500 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 dimensions of the Ritar RL21500 battery?
Dimensions (length × width × height) are 355×337×342 mm — also written as 355x337x342 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.
What are the equivalents of the RL21500 model?
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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