# Cyclon 4V-D stationary UPS battery 2Ah AGM ![Cyclon 4V-D stationary UPS battery 2Ah AGM](https://baterias.com/1934-home_default/battery-cyclon-4v-d-4v-25ah.jpg) > Cyclon 4V-D 2Ah AGM stationary battery for UPS, telecom, emergency lighting and electronic devices. Long float life, manufacturer warranty, 24 h delivery. **Category:** [Batteries for telecommunications systems](https://baterias.com/gb/batteries-for-telecommunications-systems) β†’ [CYCLON](https://baterias.com/gb/cyclon) - **Canonical URL**: https://baterias.com/gb/battery-cyclon-4v-d-4v-25ah - **Language**: en-GB - **Brand**: CYCLON - **Reference**: BCOM-CYCLON-4V-D - **MPN**: 4V-D - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Brand | Cyclon | | Reference | 4 V-D | | Model | CYCLON Battery 4 V Monoblocs | | Voltaje | 4 V | | Alto | 4.6 cm | | Peso | 0.36 kg | | TecnologΓ­a | AGM | | Capacidad C20 (Ah) | 2.5 Ah | | Capacidad C10 (Ah) | 2.5 Ah (c10) | | Diameter | 7.95 cm | ## Quick description **Cyclon 4V-D 4V 3Ah** 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 response** when the mains drop, no voltage dip - **Long life under 24/7 charge** optimised for permanent service - **Compatible with your system** existing UPS units and alarm control panels πŸ”Œ Voltage 4 V ⚑ Capacity 3 Ah C20 βš™οΈ Technology AGM βš–οΈ Weight 0,4 kg 🏷️ Model Cyclon Battery 4v Monoblocs ## Description ## Battery Cyclon 4V-D 2.5Ah 4V The Battery Cyclon 4V-D 2.50Ah (10h) 4V CYCLON Battery 4V Monoblocs belongs to the 4V Cyclon MONOBLOC batteries range These deep cycle batteries have been built with high purity materials,**Designed to offer a longer useful life ** ### Ideal for: - Telecommunications - Inverter (UPS) - Alarm system - Medical equipment (wheelchair,...) - Electric vehicles (golf cart,...) - Mobile signage - Lawn mowers ### Battery advantages and characteristics Cyclon 4V-D 2.50Ah (10h) 4V - High number of cycles: 50% to 200% more complete cycle compared to standard lead batteries (that is, from 300 to 2000 cycles). - They work significantly well in extreme applications and temperatures. - Ultra -grape load: 95% charged battery in less than an hour (no current limit) - Robust construction: resistant to blows and vibrations thanks to its metal housing. - This battery can be connected in series and/or in parallel, which allows it to customize it according to the type of application or installation. ### How to find the right battery for your vehicle or device? Enersys Cyclon batteries are adequate for you, as they have been specially designed for SAI/UPS systems, medical equipment and energy storage. Enersys, Cyclon battery manufacturer, is a leader in industrial technology so you can trust that you are acquiring a quality product.If you have doubts about the battery and its applications, do not hesitate to contact our customer service. ### Why choose a Cyclon battery? Built with high purity materials, Cyclon batteries are designed to provide a longer life, high reliability and less substitutions. ### Know more about Cyclon Cyclon has a product catalog where you will find sufficiently safe batteries for facilities in offices or hospitals.Designed for a wide range of applications, from general uses to extremely demanding applications. Cyclon batteries offer better performance and long -term property cost. Brands such as Powersafe, Odyssey, Genesis, or Cyclon are part of the battery family manufactured by Eresys, a leading company in the manufacture of industrial batteries. If you want additional information about Battery Cyclon 4V-D, you can download the product's technical sheet at the following link: [ Download technical sheet Cyclon 4V-D 2.5Ah 4V](/fichastecnicas/data-sheet-battery-cyclon-4v-d-25ah-4v-en.pdf) ## Frequently asked questions ### Is the Cyclon 4V-D an AGM battery and what are the benefits of AGM? Yes. The 4V-D from Cyclon 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 know if the 4V-D model fits my device? Three ways: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team for the 4V-D; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year β€” we reply during business hours (Mon–Fri 9:00–18:00 CET). ### How is the Cyclon 4V-D 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 (βˆ’) 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 β€” match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (βˆ’). On devices with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile. ### How many years of warranty does the 4V-D model cover? We provide 2 years of official manufacturer warranty against manufacturing defects. It applies to defects such as damaged cells, internal short-circuits or abnormal capacity loss. Damage from misuse is excluded: prolonged overcharging, unsuitable chargers or a faulty alternator. Once the defect is verified by technical inspection, we replace the 4V-D at no cost. ### How long does Cyclon 4V-D delivery take? In mainland Spain and Portugal it arrives in 24 h if you order before 17:00 and the battery is in stock β€” it leaves the same day and arrives the next business day. Afternoon or weekend orders ship the next business day. For Balearics, Canaries and other EU destinations, allow 2-5 days. Shipping cost is calculated in the cart based on destination and service (standard, express, cash on delivery). Tracking number is sent by email + SMS as soon as the parcel ships. ### Can I return the Cyclon 4V-D battery if it doesn't fit or doesn't work? Yes. You have 14 days from delivery to return it. In mainland Spain and Portugal returns are FREE β€” we cover the return shipping cost via prepaid label. In other EU countries the return shipping cost is the customer's. It must arrive in its original packaging with no signs of installation. If it was defective, the warranty covers replacement even after the 14-day period. ### Where can I buy this battery with full warranty? At baterias.com β€” authorised distributor with real stock, 24h delivery in mainland Spain and Portugal if you order before 17:00, and full manufacturer warranty. Shipping cost is calculated in the cart based on destination and chosen service (standard, express, cash on delivery). Secure payment by card, Bizum, PayPal or bank transfer. If you choose at-home installation, our technician will take the used battery and dispose of it through an authorised collection point. ### What is the service life of the 4V-D model? Expected lifespan of the Cyclon 4V-D 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 4V-D model? Dimensions (length Γ— width Γ— height) are 8Γ—8Γ—5 mm β€” also written as 8x8x5 mm β€” 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. ### How much does the Cyclon 4V-D battery weigh? It weighs 0,4 kg. Most of the weight is lead. If you plan to fit it yourself, use gloves and a carrying strap (AGM batteries are slightly heavier than conventional due to the absorbent glass-mat fibre). ### How many amps does the Cyclon 4V-D battery have? Nominal capacity 2.5 Ah[?cca: and [cold-cranking amps A]] at 4 V. Ah measure the total energy available (autonomy); CCA (also written A in cold or EN under the European standard) measure the instantaneous power to crank the starter motor. A battery with more CCA starts better in winter; one with more Ah keeps accessories on for longer. ### What are the equivalents of the 4V-D 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 β€” 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. ### Is this battery a better choice than another equivalent? This battery and its equivalents from Bosch, Tudor or Exide are technically comparable: same dimensions, same voltage and same capacity. The differences are warranty (Varta and Bosch: 2 years; Tudor and Exide: 2 years on the equivalent line), manufacturing plant (Varta and Bosch share origin in the Clarios Group; Tudor and Exide belong to Exide Technologies) and price. For private use any of these brands will give 4-6 years of life. Compare them in the "Equivalents" section. ### What do users say about the Cyclon 4V-D battery? The product rating, when available, is shown on the product page next to the stars. You can also check our public Trustpilot profile at shop level (4.4/5 from 10,960+ verified reviews). Most-praised points: reliable cold start, lifespan above 5 years and fast delivery; most common complaints mention BMS-equipped devices that need OBD registration after fitting. ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team β€” over 25 years of experience validating automotive batteries. β†’ https://baterias.com/gb/technical-team --- *baterias.com β€” Automotive batteries Β· 2026-08-03*