Ritar RL21000 · Stationary UPS battery 2V 1000Ah AGM
Specifications
| Brand | RITAR |
|---|---|
| Part number | RL21000 |
| Voltage (V) | 2 |
| Capacity (C20) | 1000 |
| Capacity (C10) | 1000Ah (c10) |
| Capacity (C5) | 875Ah (c5) |
| Technology | AGM |
| Length | 383.00 mm |
| Width | 171.00 mm |
€577.20
VAT included
4,58/5★★★★★10 reviewsVerified purchases
- ★★★★★Alvaro Santiago:
Gracias. Muy buena atención al cliente
- ★★★★Javier Caballero:
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
Ritar RL21000 2V 1000Ah 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
1000 Ah
Dimensions
383×171×372 mm
Technology
AGM
Weight
51 kg
Model
RITAR RL
Stationary battery Ritar RL21000 RL 1,000Ah 2V
2VVoltage
1,000AhCapacity
51kgWeight
The 2 V, 1,000 Ah Ritar RL21000 stationary battery from the RL range with AGM technology is designed for UPS, alarms, telecoms and emergency lighting. It replaces the original battery without adaptation in UPS, alarm and emergency systems with a 383 × 171 × 372 mm format: same 1,000 Ah capacity.
- Sealed and gas-free: suitable for cabinets and offices.
- Maintenance-free for its whole service life.
- AGM technology: absorbed electrolyte, no spills, can be mounted at an angle.
- Long float life under permanent charge.
What the Ritar RL21000 is for
The Ritar RL21000 is designed for UPS, alarms, telecoms and emergency lighting: it sits on float charge and responds instantly to a mains failure. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 51 kg and F10(M8) terminals.
Will it fit your current battery tray?
It has external dimensions of 383 × 171 × 372 mm and weighs 51 kg. It uses F10(M8) terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.
The Ritar RL21000: RL range and AGM technology
Within the Ritar catalogue, the RL series groups the references designed for this use. The RL21000 is the 1,000 Ah model of that family, with the same performance as its siblings in other sizes.
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.
What Ritar does differently
Ritar is one of the world's largest VRLA battery manufacturers. Its RA, RT, RL, HR and FT series equip UPS, telecoms and solar systems worldwide with very consistent quality. We guarantee that every Ritar arrives new, charged and with the manufacturer's full warranty.
Manufacturer's warranty
The Ritar RL21000 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.
Care and maintenance
Replace all the batteries in the set at once and avoid environments continuously above 25 °C. Check the float voltage of the UPS or charger: a voltage that is too high shortens the life of a sealed battery.
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-RL21000
Data sheet
- Brand
- RITAR
- Reference
- RL21000
- Model
- RITAR RL
- Voltage (V)
- 2
- Length
- 383.00 mm
- Width
- 171.00 mm
- Height
- 372.00 mm
- Weight
- 51 Kgs
- Technology
- AGM
- Terminal type
- F10(M8)
- Capacity (C20)
- 1000
- Capacity (C10)
- 1000Ah (c10)
- Capacity (C5)
- 875Ah (c5)
Specific References
- MPN
- RL21000
4,58/5
Verified purchasesLatest verified reviews
★★★★★Alvaro Santiago
18/02/2026De 10
Gracias. Muy buena atención al cliente
★★★★★Javier Caballero
21/01/2026Gran atención al cliente
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 RL21000 model AGM? What does this technology offer?
Yes. The RL21000 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 is the Ritar RL21000 battery installed in the vehicle?
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 RL21000 model?
Expected lifespan of the Ritar RL21000 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 383×171×372 mm — also written as 383x171x372 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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