AGM Battery VW Up - Optimum Starting Power

AGM Battery for VW Up – Perfect-fit energy for the city runabout

The VW Up (marketed as the up! until 2019) has been a firm favourite in the small car segment since 2011. With its compact dimensions, nippy handling and clear design, it appeals equally to city drivers, novice drivers and commuters. Yet especially in urban stop-and-go traffic with frequent engine starts, short journeys and many electrical consumers on board, a conventional flooded battery quickly reaches its limits. This is exactly where the AGM battery comes in – a powerful, cycle-resistant energy store developed specifically for vehicles with a start-stop system and high electrical energy demand.

In the VW Up, the battery is fitted in the engine bay at the front left (passenger side) – easily accessible under a plastic cover that can be removed in a few steps. From the factory, Volkswagen fitted many Up models with BlueMotion Technology (start-stop) with an EFB battery with 59 to 60 Ah and around 280 A DIN cold cranking current. This EFB version (Enhanced Flooded Battery) does represent an improvement over standard flooded batteries, but it cannot match the performance and service life of a true AGM battery. Anyone wanting to do their Up a favour – whether because of a fault, an upgrade or as a preventive measure before winter – therefore deliberately chooses an AGM battery. It withstands the frequent charge and discharge cycles of the start-stop system with ease and reliably supplies comfort consumers such as seat heating, infotainment system, air conditioning or retrofit components with power, even when the engine pauses at a red light.

Technical data – AGM battery for VW Up

The following overview shows the relevant specifications of an AGM battery recommended for the VW Up. The values are based on the common replacement and upgrade options that fit on the standard battery carrier in the Up engine bay.

The values given in the table show: an AGM battery with 70 Ah and 760 A cold cranking current represents a genuine performance upgrade for the VW Up. The higher capacity provides noticeably more reserve for short journeys (frequent starting, little recharging), and the strong cold cranking current ensures reliable engine starting even in the depths of winter. When buying, be sure to check the correct terminal arrangement (0 = positive terminal on the right) and the B13 base strip – only then will the battery sit mechanically secure in the holder.

Compatible model years and engine variants

The VW Up was produced from 2011 to 2023 in several versions. In principle, all Up models with a 12V electrical system can be converted to an AGM battery or replaced with one – provided the dimensions and terminal layout mentioned above match. Converting from EFB to AGM is technically straightforward and is regarded by many drivers as a worthwhile upgrade. Below is a detailed breakdown by model year and engine variant.

• Model years 2011–2016 (VW up! 1st generation): In the first model years, the Up was supplied predominantly with conventional wet batteries or – in vehicles with the optional start-stop package (BlueMotion Technology) – with an EFB battery (59 Ah). Retrofitting to AGM is particularly advisable here, as many vehicles of this age need a battery replacement anyway and AGM technology brings a clear gain in reliability.
• Model years 2016–2023 (facelift): From the 2016 facelift onwards, start-stop became standard equipment in many trim levels. The factory-fitted EFB battery (60 Ah, 480 A EN) is solid, but not a permanent solution. Switching to a more powerful AGM (e.g. 70 Ah, 760 A) is regarded in the parts trade as a clear upgrade and significantly extends the intervals between battery replacements.
• e-Up (electric, 2013–2023): The fully electric e-Up has its own 12V electrical system with a smaller auxiliary battery (typically approx. 33–40 Ah, separate installation position). The AGM battery described here (60–70 Ah) is not suitable for the e-Up. Please choose a battery specifically approved for the e-Up.
• 1.0 MPI (petrol, 44–55 kW / 60–75 PS): By far the most common engine in the VW Up. From 2016, start-stop is fitted in almost all of these variants. The AGM battery harmonises optimally with the Bosch start-stop system and delivers the required voltage consistently even when the engine is switched off.
• 1.0 TSI (petrol turbo, 66–85 kW / 90–115 PS, e.g. Up GTI): In the sportier variants with turbocharger, the demands on electrical system stability are even higher. An AGM battery with 70 Ah and 760 A EN ensures the supply to turbocharger cooling, ignition system and comfort electronics even under load.
• Natural gas variant (eco up!): The eco up! with natural gas drive was mostly equipped with start-stop and also benefits noticeably from the AGM cycle resistance, particularly in city traffic with its frequent engine restarts.

Important: before ordering, measure the exact dimensions of your current battery (especially the length) and compare them with the details in our shop. If you are unsure, our vehicle selection or a quick enquiry to our customer service will help – we will find the right AGM battery for your VW Up.

Installation instructions step by step

Safety note: Before starting work, switch off the ignition and remove the vehicle key from the ignition lock. Place the remote key at least 3 metres away from the vehicle – this prevents the electrical system from being activated unintentionally while you disconnect the battery. Tools required: 10 mm open-end spanner or socket, 13 mm socket (for the retaining bracket), cross-head screwdriver (for covers), torch, terminal grease.

1. Open the bonnet and remove the battery cover: Unlock the bonnet using the lever in the footwell (driver's side) and the bonnet catch at the VW emblem. The battery is located at the front left (passenger side) under a black plastic cover. This is usually secured with clips or a simple screw fastening – release and remove.
2. Visual inspection and wait for the electrical system to go to sleep: After removing the key, leave the vehicle to rest for at least 10 minutes. During this time all control units shut down. Disconnecting too early can trigger error messages. Check the old battery for visible damage, leakage or corrosion on the terminals.
3. Disconnect the negative terminal (black cable, −) first: Using the 10 mm spanner, loosen the nut on the negative terminal clamp (left side of the battery). Carefully pull the clamp upwards and place it to one side. Make sure the negative cable does not come into contact with metal parts in the engine bay. Remember: negative off first, on last.
4. Disconnect the positive terminal (red cable, +): Now flip open the red cover cap on the positive terminal (right) and loosen the nut of the positive clamp with the 10 mm spanner. Carefully pull off the cable and position it so that it cannot spring back and cause a short circuit.
5. Loosen the retaining bracket (battery clamp): At the lower edge of the battery – on the side facing the radiator – there is a retaining clamp (clamping bracket) secured to the battery carrier with a 13 mm nut. Loosen the nut completely and remove the retaining bracket. Some Up models have an additional retaining wedge – remove this as well.
6. Lift out the old battery: Grip the battery with both hands by the side recesses (if present) or by the base of the casing. A 60 Ah EFB weighs around 15 kg – lift evenly and with care for your back. Remove the battery vertically from the engine bay and place it on an acid-resistant surface.
7. Clean the battery carrier and check for corrosion: Take the opportunity to clean the exposed battery carrier with a damp cloth. Remove any acid residue or dirt. If corrosion is visible on the terminals, clean them with a wire brush – this improves contact.
8. Insert the new AGM battery: Carefully place the new battery into the carrier. The terminal layout must be correct: positive terminal on the right, negative terminal on the left (terminal layout 0). The B13 base strip must engage securely in the carrier. Do not use force – the battery sits cleanly and level in the carrier bed.
9. Fit the retaining bracket: Refit the retaining bracket and tighten the 13 mm nut by hand, then tighten with the wrench. The battery must not have a millimetre of play – a loose contact leads to vibrations and drastically shortens service life.
10. Connect the terminals – positive first, then negative: Place the positive terminal clamp (red) on the right terminal and tighten the 10 mm nut. Close the protective cap. Then place the negative terminal clamp (black) on the left terminal and tighten. Do not use excessive torque – the terminal clamps must sit firmly but must not be deformed. A touch of terminal grease on the connections prevents corrosion.
11. Fit the battery cover, close the bonnet: Refit the plastic cover and secure it. Check that all parts are firmly seated. Close the bonnet.
12. Code / register the battery (start-stop models): On VW Up vehicles with a start-stop system, battery coding (BEM coding) is required after a battery change. The battery energy management control unit must know the new battery type (AGM), the capacity and the serial number code in order to adjust the charging characteristics optimally. This is done via the OBD2 diagnostic interface using suitable tools (e.g. VCDS, OBDeleven, or at a specialist workshop). Without coding, the AGM battery ages faster and the start-stop system may not work correctly.

Duration: For the purely mechanical swap, experienced DIY mechanics need about 20–30 minutes. Allow a further 10–15 minutes for subsequent coding (diagnostic device). Important note: If you do not have a suitable diagnostic device, have the coding carried out at an independent workshop. The installation itself is easy to do yourself with the instructions above.

Advantages of the AGM battery in the VW Up

• Up to 3× more charge cycles than EFB: An AGM battery withstands around 600–800 full cycles (discharge to 50 % and recharge), compared with around 200–300 cycles for an EFB. Ideal for the VW Up with an active start-stop system in city traffic.
• 760 A cold cranking current for icy winter mornings: Even at double-digit sub-zero temperatures, the AGM battery provides enough power to reliably start the 1.0 MPI three-cylinder engine. The 760 A CCA value exceeds the standard EFB by around 40 %.
• Maintenance-free and leak-proof: The electrolyte bound in glass fibre fleece makes the AGM battery completely maintenance-free – no topping up with distilled water, no risk of leakage, even in an accident or at a strong angle.
• Optimal support for the start-stop automatic: While the engine is silent at a red light, the AGM battery supplies the entire electrical system – including radio, ventilation, lights and sensors – with a constantly stable voltage without drops.
• Perfect regeneration through recuperation: When braking and in overrun, the VW Up alternator feeds energy back into the battery. Thanks to its low internal resistance (only approx. 3–4 mΩ), the AGM absorbs these short, intensive charging pulses almost without loss – an EFB is considerably slower here.
• Long service life under normal use: While an EFB often gives up after just a few years in the city cycle, an AGM battery lasts longer with correct care and coding – which saves money and stress in the long run.
• Reserves for retrofits and comfort consumers: Whether sound system, dashcam with parking mode, seat heating or auxiliary headlights – the 70 Ah capacity provides enough buffer so that your VW Up does not end up without power even when the engine is off.
• Fewer voltage drops on short journeys: The VW Up in particular is typically driven on short journeys (shopping, commuting). The AGM effectively compensates for the incomplete charge through its higher cycle stability and better charge acceptance – the battery stays fitter even if the engine rarely gets properly warm.

Frequently asked questions – AGM battery VW Up

Which AGM battery fits the VW Up?

For the VW Up with start-stop system and conventional drive (not e-Up), AGM batteries with 60–70 Ah, 640–760 A cold cranking current, terminal layout 0 (positive terminal on the right) and base strip B13 are recommended. Very popular and well proven is the Varta Silver Dynamic AGM E39 (70 Ah, 760 A) as well as the Banner Running Bull AGM 57001. Both fit into the standard battery carrier and deliver the necessary power. To be safe, measure the length of your current battery before purchase (242 or 278 mm).

How long does the AGM battery last in the VW Up?

With correct installation, professional coding (BEM) and a normal driving profile (a mix of city and rural journeys), AGM batteries in the VW Up achieve a typical service life of 6 to 8 years. Extreme factors such as continuous short journeys under 5 km, frequent use of auxiliary heaters or weeks of standing time can shorten the service life. For comparison: the factory-fitted EFB battery in the Up often has to be replaced after just 3–5 years.

Do I need to code the battery after replacement?

Yes, with all VW Up with start-stop automatic (BlueMotion Technology) battery coding is mandatory. The on-board power supply control unit (BEM – battery energy management) must know the new battery type (AGM instead of EFB), the capacity (e.g. 70 Ah) and a new serial number. Without coding, the system charges the AGM with the old EFB charging characteristic – this leads to undercharging or overcharging, shortened service life and can cause the start-stop system to refuse to work.

What does an AGM battery for the VW Up cost?

The price depends on the capacity (Ah), cold cranking current (CCA) and technology of the battery. At Electronicx you will find suitable AGM batteries at fair prices – you can see the current price directly on each product page. If you do not install the battery yourself, the costs for installation and, if applicable, coding at a workshop are added; these are set by the workshop.

Where do I find the battery in the VW Up?

The starter battery of the VW Up is located in the engine compartment at the front left (passenger side). It sits directly behind the left headlight in a black plastic battery carrier and is protected from above by a removable plastic cover. The battery is immediately accessible after opening the bonnet – you do not need to remove interior trim or seats, as can be the case with other vehicles. Only in the e-Up does the position of the 12V auxiliary battery differ (here installed in the interior/footwell).

Can I upgrade from EFB to AGM – and is it worth it?

Absolutely, and it is worth it in almost every case. The upgrade from the factory-fitted EFB (59/60 Ah) to an AGM (e.g. 70 Ah) is technically safe and is expressly named by Volkswagen as an upgrade option for many models. The prerequisite is the subsequent coding of the battery control unit to AGM.