We stock 10 batteries of 13 Ah (AGM, GEL, Quadflex) priced between 48.60 € and 244.95 €, VAT included. Amp-hour capacity is the total energy the battery stores: when replacing, always fit equal or slightly higher capacity than the original, never lower.
Available models · Updated 15/11/2026
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Cars that use a 13Ah auxiliary battery
A 13 Ah battery does not start the car: it is the auxiliary (backup) battery fitted to some models, mostly with Start-Stop, hybrids and electric cars. From our orders, these are the models it is most often bought for. Open yours to see the exact battery.
Common sizes at this rating
Other capacities
Frequently asked questions
How much does a 13Ah battery cost?
Between 48.60 € and 244.95 €, VAT included, depending on technology (AGM, GEL, Quadflex) and brand. Price grows with cold cranking amps (CCA) and Start-Stop technologies such as EFB or AGM.
Can I fit a battery with more capacity than 13Ah?
Yes, as long as the dimensions and terminal layout match your tray and the CCA is equal or higher than the original. What you should never do is fit LESS capacity than the manufacturer specifies.
What sizes do 13Ah batteries usually have?
The most common sizes for this rating are 150x90x145 · 175x84x124 · 108x70x140 (length × width × height, in mm). Always check your tray before buying: each product page lists exact dimensions.
Which cars use a 13Ah auxiliary battery?
In a car, a 13 Ah battery is the auxiliary (backup) battery, not the starter battery. From our sales, the models that most often use it are Mercedes-Benz E-Class, Mercedes-Benz A-Class, Mercedes-Benz GLA-Class, Mercedes-Benz B-Class, Mercedes-Benz C-Class and Mercedes-Benz CLA. Check yours by make, model and engine or by number plate: the starter battery is a different, larger one.
AGM, EFB or conventional for my car?
It depends on the equipment: with advanced Start-Stop (regenerative braking) fit AGM; with basic Start-Stop, EFB — or AGM, never less —; without Start-Stop a quality conventional battery is enough. On this page you can filter by technology to see only the ones that suit your case.
How do I know which polarity I need?
Look at your current battery from the front with the terminals on the far side: if the positive (+) sits on the right it is right polarity; on the left, left polarity. Every card shows the polarity and you can filter by it above — with the wrong polarity the cables will not reach the terminal.