How do I get the battery proof into my Kleinanzeigen ad?

Three places at once works best: the certificate card as a photo in the image gallery, the short verification link (akku-brief.de/z/…) in the description, and the full link in chat when someone asks. Then every buyer both sees it and can check it. Note that Kleinanzeigen does not make URLs clickable in private ads — buyers type or scan them, so keep the link short.

How do I convince a stranger that the battery is healthy?

With proof they can check themselves: issued independently, tied to this exact car by its VIN, and verifiable in any browser. A screenshot of your own dashboard is a claim; a signed certificate is evidence.

Is it worth the effort for a private sale?

Yes. The battery is the single biggest value lever on a used EV: roughly two thirds of buyers name it as their main concern. A proof they can verify turns that concern into a selling point and holds your price.

Should I get the proof before or after publishing the ad?

Before. It belongs in the first line of the description and in the image gallery from day one. If your car has an LFP battery, charge it to 100 percent once beforehand so the BMS is calibrated and reports its best, correct figure.

Buying & Selling

Selling an EV on Kleinanzeigen: Proving Battery Health

Updated: 19 August 2026 · 3 min read

Every buyer asks a Tesla seller the same question: "How's the battery?" As a Tesla driver you are better placed to answer it than almost any other seller. With proof the buyer can verify, the battery question turns into your strongest argument. Three simple steps put it into your ad on Kleinanzeigen, Germany's largest peer-to-peer classifieds marketplace (known as eBay Kleinanzeigen until 2023).

Mockup of a Kleinanzeigen ad: the Akkubrief certificate card as a gallery photo and the verification link in the description. — How the proof looks in an ad: the certificate card as a gallery photo (①, with QR code) and the short verification link in the description (②). Illustrative example.

Three places to put the proof

A photo in the image gallery. Many buyers scroll the photos before they read a word — so that is where the proof belongs. Akkubrief gives you the certificate as a ready-made image card showing the battery figure and a QR code; the buyer scans it and is one tap away from the verifiable original.

A short link in the description. Put the short verification address (akku-brief.de/z/…) into the text. Buyers open it themselves and see the signed original, tied to the car's VIN. Keep it short: in private ads Kleinanzeigen does not turn URLs into clickable links, so the address has to be easy to type.

The full link in chat. When someone asks, send the verification link straight into the conversation. One tap, and the doubt is gone.

What kind of proof convinces a stranger?

On an anonymous marketplace, only what the buyer can check for themselves counts. Three things make proof strong: it comes from an independent source, it is tied to this exact car by its VIN, and anyone can verify it in a browser. The method comparison walks through every route, from the car's built-in test to a full certificate. Akkubrief (disclosure: our own product) builds that into a battery history: the condition is determined from many charging sessions over time, and out of it comes a signed document anyone can check in a browser — no hardware, €79, available to buy once the validation study reports. It also assumes the car has been connected for a while already. Why it cannot be forged is spelled out on our Security & Trust page.

Tesla specifics: remaining warranty and calibration

Two Tesla details that are worth real money in an ad. First, work out the remaining warranty: Tesla covers the battery for 8 years and a minimum of 70 percent capacity, up to 160,000 km on Standard/RWD variants and 192,000 km on Long Range and Performance. "Still 3 years or 70,000 km of battery warranty left" is something every buyer understands immediately. Second, calibrate before you measure: cars with LFP cells, most Standard Range variants (see the Model 3 overview), should be charged to 100 percent once so the BMS reports its best and most accurate figure.

The ad in four steps

Battery in the first line — after the price, it is your strongest argument.
Certificate card into the image gallery.
Short link and remaining warranty into the description.
Stay honest — a documented figure clears the uncertainty away, and it protects you after the sale as well. How that helps you avoid the battery price discount is covered in its own article.

In short

Put the battery health into the gallery as a certificate card with a QR code, the verification link into the description, and the full link into the chat, then add the remaining warranty. That turns "How's the battery?" into a reason to buy.