# Wheelchair battery Kronobat ES3-12 12V 3Ah AGM ![Wheelchair battery Kronobat ES3-12 12V 3Ah AGM](https://baterias.com/3357-home_default/best-price-battery-12v-3ah-agm-es3-12.jpg) > Kronobat ES3-12 wheelchair battery 12V 3Ah AGM. AGM DEEP CYCLE range. Dimensions 134Γ—67Γ—65 mm. For daily wheelchair use. **Category:** [Mobility Vehicle Batteries](https://baterias.com/gb/batteries-for-mobility-vehicles) β†’ [KRONOBAT](https://baterias.com/gb/kronobat) - **Canonical URL**: https://baterias.com/gb/best-price-battery-12v-3ah-agm-es3-12 - **Language**: en-GB - **Brand**: KRONOBAT - **Reference**: BCOM-KRONOBAT-ES3-12 - **MPN**: ES3-12 - **Stock**: Out of stock ## Technical specifications | Feature | Value | |---|---| | Reference | ES3-12 | | Model | AGM DEEP CYCLE | | Voltage (V) | 12 V | | Largo | 134 mm | | Ancho | 67 mm | | Alto | 65.5 mm | | Peso | 1.3 kg | | TecnologΓ­a | AGM | | Terminal type | F1 | | Capacity (C20) | 3 Ah (c20) | ## Quick description **Kronobat ES3-12 12V 3Ah** is a sealed AGM/GEL battery for daily mobility use: maintenance-free, no risk of spills, and thousands of useful cycles well beyond a starter battery. ### Why this wheelchair battery? - **Daily cycling without wear** handles deep discharges without losing capacity - **Sealed AGM/GEL** no maintenance, no risk of spills - **Thousands of useful cycles** over its full lifetime πŸ”Œ Voltage 12 V ⚑ Capacity 3 Ah C20 πŸ“ Dimensions 134Γ—67Γ—65 mm βš™οΈ Technology AGM βš–οΈ Weight 1,3 kg 🏷️ Model AGM DEEP CYCLE ## Description ## Mobility battery Kronobat ES3-12 AGM Deep Cycle 3Ah 12V 12*V* Voltage 3*Ah* Capacity 1.30*kg* Weight Designed for power wheelchairs, mobility scooters and light electric vehicles, the **Kronobat ES3-12** from the **AGM Deep Cycle** range offers **3 Ah** of deep-cycle capacity with AGM technology. Its 134 Γ— 67 Γ— 65 mm make it the exact replacement for the 3 Ah battery fitted as standard to many power wheelchairs and mobility scooters. - Approved for air and sea transport (VRLA). - No maintenance, no water top-ups. - Sealed AGM/GEL: safe indoors and in transport. - AGM: faster recharging and better cycle resistance than a conventional battery. ### What the Kronobat ES3-12 is for With 3 Ah, the Kronobat ES3-12 offers the daily range that power wheelchairs, mobility scooters and light electric vehicles need, with a sealed construction that is safe indoors. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 1.30 kg and F1 terminals. ### Will it fit your current battery tray? The Kronobat ES3-12 is made in the 134 Γ— 67 Γ— 65 mm format and weighs 1.30 kg. It uses F1 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. ### What Kronobat does differently Kronobat is the exclusive brand of baterias.com: batteries made to the same production standards as the leading brands, with a value for money that is hard to match and an official warranty. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty. ### The Kronobat ES3-12: AGM Deep Cycle range and AGM technology The **AGM Deep Cycle** is the Kronobat range the ES3-12 belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle. 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. ### Care and maintenance Use the original charger or one compatible with the battery technology (AGM/GEL) and always replace both batteries in the set together. Recharge the wheelchair or scooter after each use and do not leave it discharged for days: lead sulphates and loses capacity. ### Warranty and coverage The Kronobat ES3-12 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 Same-day dispatch from our warehouse for in-stock orders placed **before [[ks:cutoff]]**: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for **[[ks:return_days]] days** if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email. ## Frequently asked questions ### Is the Kronobat ES3-12 an AGM battery and what are the benefits of AGM? Yes. The ES3-12 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 is the Kronobat ES3-12 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 does this battery last? Expected lifespan of the Kronobat ES3-12 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 measurements of the ES3-12 model? Dimensions (length Γ— width Γ— height) are 134Γ—67Γ—66 mm β€” also written as 134x67x66 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. ### Which batteries are equivalent to the Kronobat ES3-12? 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. ## Equivalent batteries - [MK POWERED ES3-12](https://baterias.com/gb/battery-mk-es3-12-agm-12v-3ah) ## 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· 2026-10-01*