300TDI Starter Batteries
300TDI starter batteries for Defender, Discovery 1 and Range Rover Classic, including high-capacity conventional batteries and compact high-cranking AGM batteries.
Hankook and Yuasa cover the normal full-size starter-battery requirement, while the Optima Red Top provides high cranking output from a compact AGM battery. Individual product pages show capacity, cold-cranking output, dimensions and terminal layout.
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Defender, Discovery & Range Rover Starter Battery – Yuasa 110Ah 925CCA | YBX3642
TD5 Batteries Defender TD5 Engine Parts Discovery 2 TD5 Engine Parts 200TDI Engine Parts Engine 300TDI Engine Parts 300TDI Starter Batteries 300TDI Engine Parts 200TDI Engine Parts 200TDI Engine Parts 300TDI Engine Parts 2.5 Turbo Diesel Defender Electrical Parts 2.5 NA 2.5 Petrol Discovery 2 Electrical Parts Electrical Electrics
Choosing a 300TDI battery
The Hankook MF31-1000 and Yuasa YBX3642 are full-size high-capacity starter batteries for Defender, Discovery 1 and Range Rover Classic 300TDI models. The Optima Red Top RTC4.2 provides strong cranking output from a much more compact AGM battery, while the Draper battery tester can be used to check battery condition and charging performance before replacing parts.
| Battery | Best suited to | Key specification |
|---|---|---|
| Hankook MF31-1000 | Full-size high-capacity starter battery for Defender, Discovery 1 and Range Rover Classic 300TDI. | 115Ah / 1000CCA |
| Yuasa YBX3642 | Heavy-duty Yuasa starter battery with strong capacity and cranking output. | 110Ah / 925CCA |
| Optima Red Top RTC4.2 | Compact AGM starter battery where high cranking output and vibration resistance are important. | 50Ah / 815CCA |
| Draper 12V Battery Tester | Checking battery condition, cranking performance and alternator charging output. | Battery, cranking and charging tests |
Check 300TDI battery fitment before ordering
Defender, Discovery 1 and Range Rover Classic battery installations are not automatically interchangeable. Previous replacement work, additional electrical equipment and battery-tray modifications can also affect which battery will fit properly.
Battery dimensions
Measure the length, width and overall height of the existing battery, including the terminals.
Measure the length, width and overall height of the existing battery, including the terminals.
Terminal layout
Check whether the positive and negative terminals match the existing battery leads without stretching or crossing them.
Check whether the positive and negative terminals match the existing battery leads without stretching or crossing them.
Tray and hold-down
Confirm that the battery sits fully within the tray and can be secured using the vehicle’s existing clamp or retaining system.
Confirm that the battery sits fully within the tray and can be secured using the vehicle’s existing clamp or retaining system.
Starting performance
Compare the Ah capacity and CCA output, particularly for vehicles used in cold weather, fitted with accessories or left standing between journeys.
Compare the Ah capacity and CCA output, particularly for vehicles used in cold weather, fitted with accessories or left standing between journeys.
Battery construction and starting performance
| Battery type | What it offers |
|---|---|
| Sealed-calcium starter battery | Conventional maintenance-free starting power with high-capacity and high-CCA choices for working Land Rovers. |
| Spiral AGM starter battery | Compact high-cranking construction with strong vibration resistance and rapid charge acceptance. |
| Battery tester | Checks battery condition, measured cranking performance and alternator charging output before parts are replaced. |
Related battery and electrical sections
| Section | Use it for |
|---|---|
| 12V Batteries for Land Rover | The complete starter, AGM and auxiliary battery range. |
| TD5 Batteries | Starter and AGM batteries for Defender TD5 and Discovery 2 TD5. |
| Puma/TDCI Batteries | Battery choices for Defender 2.4 and 2.2 TDCI. |
| Leisure Batteries | Auxiliary, dual-purpose and dual-battery electrical use. |
| Defender Electrical Parts | Starting, charging and other electrical parts for Defender models. |
| Discovery 1 Electrical Parts | Electrical components and starting-system parts for Discovery 1. |
| Range Rover Classic Electrics | Electrical and charging-system parts for Range Rover Classic. |
