300TDI Batteries

12V batteries for Land Rover 300TDI models, including Defender 300TDI, Discovery 1 300TDI and Range Rover Classic 300TDI applications. This section includes standard starter batteries, higher-cranking options, AGM starter batteries and battery testing tools.

Choose a 300TDI battery by vehicle fitment first, then check the physical case size, terminal layout, Ah capacity and cold cranking performance. A battery can have the right voltage and still be wrong for the vehicle if the case size or terminal position does not suit the battery tray and leads.

• Standard starter batteries: suitable for normal 300TDI starting duties where the size and terminal layout match your vehicle.
• Higher cranking options: useful where strong cold-start performance is the priority, especially on older vehicles or vehicles used less frequently.
• AGM starter batteries: suitable where listed for high-cranking starter use and demanding applications.
• Testing before replacement: a 12V battery tester can help check battery condition, cranking performance and alternator charging output.

If your 300TDI is slow to crank, has been standing, or repeatedly flattens batteries, check the charging system and parasitic drain as well as the battery itself.

Vehicle batteries require specialist courier handling. Batteries are dispatched using a specialist battery courier, and if your basket contains a battery it may be the only delivery option shown at checkout. Order other parts separately if needed.