# 12V 9A AGM Battery ![12V 9A AGM Battery](https://baterias.com/3226-home_default/battery-12v-9ah-agm.jpg) > Battery Kronobat 9Ah 12V ✅ Battery for UPS. Kronobat Batteries 【Cheap Online Batteries】 **Category:** [Batteries for UPS / UPS](https://baterias.com/gb/batteries-for-sai-ups) → [KRONOBAT](https://baterias.com/gb/kronobat) - **Canonical URL**: https://baterias.com/gb/battery-12v-9ah-agm - **Language**: en-GB - **Brand**: KRONOBAT - **Reference**: BCOM-KRONOBAT-12V9Ah - **MPN**: ES9-12 - **Price**: 26,20 € - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Reference | Kronobat 12 V 9 Ah | | Voltage (V) | 12 V | | Largo | 151 mm | | Ancho | 65 mm | | Alto | 100 mm | | Tecnología | AGM | | Terminal type | F1/F2 | | Capacity (C20) | 9 Ah (c20) | ## Quick description **Kronobat 12V9Ah 12V 9Ah** 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 🔌 Voltage 12 V ⚡ Capacity 9 Ah C20 📏 Dimensions 151×65×102 mm ⚙️ Technology AGM ## Description ## Stationary battery Kronobat Kronobat 12V 9Ah 9Ah 12V 12*V* Voltage 9*Ah* Capacity 2.69*kg* Weight The **12 V**, **9 Ah** **Kronobat Kronobat 12V 9Ah** stationary battery with AGM technology is designed for UPS, alarms, telecoms and emergency lighting. Its 151 × 65 × 100 mm make it the exact replacement for the 9 Ah battery fitted as standard to many UPS, alarm and emergency systems. - Standard format for UPS and emergency systems. - Low self-discharge and high reliability. - Instant response to mains failures. - AGM: faster recharging and better cycle resistance than a conventional battery. ### What the Kronobat Kronobat 12V 9Ah is for With 9 Ah, the Kronobat Kronobat 12V 9Ah 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 2.69 kg and F1/F2 terminals. ### Dimensions, polarity and mounting The Kronobat Kronobat 12V 9Ah is made in the 151 × 65 × 100 mm format and weighs 2.69 kg. It uses F1/F2 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. ### Technology inside the Kronobat Kronobat 12V 9Ah Within the Kronobat catalogue, the Kronobat 12V 9Ah is the 9 Ah model designed for this application. 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. ### Why choose Kronobat batteries With Kronobat we offer an own-brand alternative without compromising on quality: European manufacturing, original-equipment controls and the direct backing of baterias.com for warranty and advice. All the Kronobat batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty. ### Manufacturer's warranty The Kronobat Kronobat 12V 9Ah 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. Charge with a charger that has an AGM mode: it limits the voltage and protects the glass-fibre separators. ### Shipping, delivery and returns Order **before [[ks:cutoff]]** 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 **[[ks:return_days]] days** to return it if it has not been installed, with free collection on the mainland, and shipment tracking by email. ## Frequently asked questions ### Is the Kronobat ES9-12 an AGM battery and what are the benefits of AGM? Yes. The ES9-12 from Kronobat 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. ### How long does the Kronobat ES9-12 battery last? Expected lifespan of the Kronobat ES9-12 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 Kronobat ES9-12 battery? Dimensions (length × width × height) are 151×65×102 mm — also written as 151x65x102 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 ES9-12 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. ## Equivalent batteries - [MK POWERED ES7-12FR T2](https://baterias.com/gb/battery-mk-es7-12fr-t2-12v-72ah) - [MK POWERED ES9-12](https://baterias.com/gb/battery-mk-es9-12-agm-12v-9ah) ## Reviews - **Average rating**: 4.81 / 5 (22 reviews) ## Technical team (editorial authorship) The FAQs, guides and comparisons on this site are reviewed by the baterias.com technical team — over 25 years of experience validating automotive batteries. → https://baterias.com/gb/technical-team --- *baterias.com — Automotive batteries · 2026-10-01*