Varta D21 Dynamic SLI · Car battery 61Ah 600A

Varta D21 Dynamic SLI (formerly Silver Dynamic) 61Ah 600A 12V Car Battery

The Varta D21 car battery is the 12 V, 61 Ah model with 600 A of cold cranking power (EN) from Varta's Dynamic SLI (formerly Silver Dynamic) range, intended for cars with conventional starting, without a Start-Stop system. Its 242 × 175 × 175 mm dimensions and positive terminal on the right make it the exact replacement for the 61 Ah battery fitted as standard in many cars.

In short: the Varta D21 (61 Ah, 600 A, 242 × 175 × 175 mm, positive terminal on the right) is rated 4.60 out of 5 in 5 customer reviews. It is a conventional battery for cars without Start-Stop: if yours has Start-Stop, it needs an EFB or AGM battery of the same size. Verified equivalent alternatives: Tudor TA612 and Tudor TB602.

• Maintenance-free lead-acid technology: no topping up with water.
• Long service life with normal use and a charging system in good order.
• Reliable cold starting thanks to its high cranking current.
• Direct replacement for the original battery in cars without Start-Stop.

Vehicles compatible with the Varta D21 battery

According to our database, the Varta D21 is fitted to more than 453 vehicles from brands such as Ford, Opel, Vauxhall, Renault, Chevrolet and Nissan, among others. For anyone who needs to change the battery in their Ford or Opel, this Varta D21 reproduces the original specifications. Added to that list are models from Lotus, Dacia, Rover, Seat, MG, Fiat, Suzuki and Honda. It covers 63 original equipment references, one of the widest coverages in its format. Not sure whether it is the one for your car? Check in seconds by entering your registration in our finder.

Format and fitting of the Varta D21

In terms of format, the Varta D21 measures 242 × 175 × 175 mm (length × width × height) and weighs 14,6 kg. The positive terminal on the right determines which side the cables end up on: it is the detail that causes the most buying mistakes, so it is worth checking before you order. It uses a B13 hold-down and terminal 1, the system that anchors it to the vehicle's battery tray. Checking the three dimensions and the terminal position before buying avoids the most common error when replacing a battery.

The Varta D21 and the Dynamic SLI range

The Dynamic SLI series (blue label) is Varta's lead-acid line for cars with conventional starting, without Start-Stop. It succeeds the Blue, Silver and Dynamic SLI ranges and keeps the calcium-silver grid technology that guarantees low self-discharge and reliable cold starting, with no maintenance required.

Aimed at the bulk of the car and van fleet, it offers Varta's classic balance between cranking power and durability at a moderate price: the logical replacement for the original battery in a car without Start-Stop.

This series uses lead-acid technology with plates optimised for a good balance between cranking power and service life. It is the natural successor when your car has no Start-Stop and came with a standard battery from new: the same thinking, without paying over the odds for a chemistry you do not need. This battery used to belong to Varta's Dynamic SLI, Dynamic SLI or Dynamic SLI range; following the brand's commercial renaming (2025), it forms part of the new Dynamic SLI series.

Why choose a Varta battery

Varta is an original equipment (OEM) supplier to a good share of Europe's car manufacturers: many cars leave the factory with a Varta fitted. Buying a replacement means, in most cases, refitting the original battery with the same quality and the brand's official warranty.

Varta combines more than a century of experience with Clarios's industrial production: it is the battery many manufacturers choose as standard and one of the most recommended by workshops. Like every lead-acid battery, it is 100% recyclable.

Varta's production combines automated lines with verification of more than 100 parameters per unit; that traceability is what underpins its reputation for reliable starting throughout the battery's life.

Manufacturer's warranty

The Varta D21 battery comes with the official manufacturer warranty.

Care and maintenance

To get the most out of it, keep the alternator in good order and avoid leaving lights or accessories on with the engine switched off. Repeated very short journeys are its main enemy: they stop the battery from recharging fully and shorten its life. If the car is going to stand unused for weeks, it is worth disconnecting the terminal or using a trickle charger so it does not drop below the safe threshold. Making sure the terminals are clean and properly tightened also helps towards reliable starting.