# Tractor battery: which one it takes and how to get it in Málaga > Blog article — Málaga Baterías · Updated 2026-11-01 _Which battery a tractor takes: 12 V, two in series or parallel, Ah and cranking by power, care between seasons. Collection or farm delivery in Málaga._ A tractor is unforgiving with the wrong battery: it has to crank a large diesel engine, put up with vibration every day and, quite often, sit for weeks or months between seasons. In this guide we explain which battery a tractor takes, how to get the capacity and cranking power right, and how to get one in Málaga and across the province, from the Guadalhorce valley to the Axarquía or the Antequera area. Quick answer: almost every tractor runs on 12 V. Small and mid-sized tractors use a single starter battery; many large tractors use two 12 V batteries, either in parallel (still 12 V, with more capacity) or in series (24 V). Capacity (Ah) and cold cranking current (A EN) depend on engine power and on what the tractor draws: linkage, work lights, a cab with air conditioning. A starter battery is no good for an electric fence or solar irrigation: those need a deep-cycle battery. Which battery does a tractor take? The right part number is always the one the tractor manufacturer specifies, or the one already fitted if it was correct. Even so, it helps to understand the three set-ups you will come across: - One 12 V battery: the norm on garden and compact tractors, orchard and vineyard tractors and most mid-sized models. - Two 12 V batteries in parallel: the system stays at 12 V, but the capacity and cranking power of both add up. Common on large tractors. - Two 12 V batteries in series (24 V): less common on tractors, more typical of heavy machinery and some older or very powerful models. Two batteries in series (24 V) The positive of one goes to the negative of the other and the voltage adds up: 12 V + 12 V = 24 V. Both always work together, so they are replaced together and with the same part number. Put a new one next to an old one and the old one drags the new one down until both are ruined. Two batteries in parallel (12 V) Positive to positive and negative to negative: the voltage stays the same, but the amps add up. The rule is the same: two identical batteries, same part number and same age. Pairing a new battery with one that is several years old is money down the drain. Capacity (Ah) and cranking (A EN) by tractor type A cold diesel demands a lot at start-up, and a tractor with a cab and electric implements also needs reserve. This table is only a guide: your tractor’s battery size, polarity and hold-down are what count. Tractor type Usual set-up Typical capacity Typical cranking Garden or compact tractor One 12 V battery 60-90 Ah 500-700 A EN Mid-power orchard or vineyard tractor One 12 V battery 90-120 Ah 700-900 A EN Mid-to-high power tractor with cab One large 12 V battery 120-180 Ah 900-1,000 A EN or more Large tractor Two 12 V in parallel or in series As specified for each battery As per manufacturer Going up a little in capacity can make sense if you add electrical loads, but only if the battery fits the tray, the hold-down clamps it properly and the polarity matches. A battery that “almost” fits ends up loose and broken. The loads that change the choice Two tractors with the same engine may need different batteries. This is what matters most: - Linkage and electrically controlled hydraulics: solenoid valves and electronic controls draw current, especially during repeated manoeuvres at low revs. - Work lights: several lamps on during an early-morning or evening shift drain the battery fast if the engine is idling. - Cab with air conditioning: the fan and the climate-control electronics are among the biggest summer loads. - Short, frequent starts: moving the tractor from plot to plot with lots of starts and little charging time slowly empties the battery. Which battery does your tractor need? Send us the part number or model on WhatsApp: we advise you, then collect it with no appointment or we deliver it to your farm. Call 952 31 01 18 WhatsApp Vibration, hold-down and terminals Out in the fields, batteries die more from vibration and dirt than from age. Check these points before and after replacing one: - Firm hold-down: the clamp or bracket must stop the battery from moving. If it rattles, the internal plates get damaged and the case can crack. - Reinforced construction: for heavy farm use, a battery designed for vibration (known as heavy-duty) is the better choice. We advise you based on the tractor and the work it does. - Clean, tight terminals: dust, damp and white sulphate on the terminals cause weak starts even when the battery is fine. - Cables and earth: a corroded earth strap or a loose terminal is often mistaken for a flat battery. Tractor laid up between seasons: looking after the battery Many tractors in the province work hard during harvest, the grape harvest or the olive picking and then spend months in the shed. A battery left discharged sulphates and loses capacity for good. To avoid it: - Store it charged: before laying up the tractor, leave the battery fully charged. - Disconnect the negative: clocks, alarms and control units draw current even with the tractor switched off. - Check the voltage every few weeks: a charged 12 V battery reads about 12.6 V or slightly more at rest; below 12.4 V it should be charged. - Use a maintenance charger: if there is a socket in the shed, a maintenance charger keeps it topped up without overcharging. - Check the level if it has caps: on serviceable batteries, the electrolyte must cover the plates; top up with distilled water only. If the tractor will not start at the beginning of the season, the battery does not always need replacing. We explain why in what to do with a flat battery . Starter or deep cycle: electric fences and solar irrigation This is a very common mix-up on farms. A tractor battery is built to deliver a lot of current for a few seconds and be recharged straight away by the alternator. An electric fence or a solar irrigation system asks for the opposite: low current for many hours, with deep discharges every day. - Starter battery: for the tractor. … ## Buy or change this battery in Málaga Málaga Baterías — official Varta distributor. No appointment needed. Free quote and recycling of your old battery. - **Phone:** [952 31 01 18](tel:+34952310118) - **WhatsApp:** [+34 952 31 01 18](https://wa.me/34952310118) - **Address:** C/ La Orotava, 100, 29006 Málaga - **Directions:** https://maps.google.com/?q=Málaga+Baterías+C/+La+Orotava+100+Málaga ### Areas we cover Málaga city: Centro, Teatinos, El Palo, Pedregalejo, Ciudad Jardín, Cruz de Humilladero, Carretera de Cádiz, Churriana, Campanillas, Puerto de la Torre, Bailén-Miraflores, Palma-Palmilla. Costa del Sol: Torremolinos, Benalmádena, Fuengirola, Mijas, Marbella, Rincón de la Victoria, Vélez-Málaga, Torrox, Nerja, Alhaurín. --- [See the full product page](https://malagabaterias.com/en/blog/tractor-battery-which-one-malaga)