Land Rover Discovery Battery: Specs, Fitment & Common Faults

A genuinely distinctive finding: a battery drain was traced specifically to use of the central locking, with a significant draw persisting well after use — plus a useful finding that worn starter motor bearings can mimic a dead battery entirely.

Illustration for editorial purposes

OEM Part Number: LR104511

Genuinely worth knowing: a Land Rover Forums member physically measured their factory battery at roughly 13-7/16 to 13-7/8 inches long, yet the genuine H8 replacement is listed as 15 inches — a full inch longer, with a real concern that the existing clamps might not adjust to fit. Worth checking your clamp's adjustable range before assuming a straightforward swap.

Genuine reference, HAZMAT-restricted shipping	Land Rover OEM: LR104511 — 900A, shared across Discovery, Range Rover, Range Rover Sport, Range Rover Velar
Most Discovery models, current generation	Group H8 (49), AGM, 850-900 CCA
Important	Many newer Discovery models genuinely require battery registration or a system reset after installation for correct charging behaviour.

The Part Everyone Blames First, Not Always Correctly

A car that won't start gets blamed on the battery more often than any other component, and it's right often enough to make that assumption a reasonable first check. But it's not always the actual cause, which is worth knowing before spending money on a replacement that doesn't fix anything.

Before you buy: battery size, capacity and type (standard vs AGM/EFB for stop-start systems) vary by trim and engine. Always confirm against your VIN before ordering.

What It Does

The 12V battery provides the power needed to start the engine and runs electrical systems when the engine isn't turning. On cars with stop-start technology, the battery works much harder than on older designs, since the engine switches off and restarts far more frequently — which is exactly why these cars need a specific AGM or EFB battery type rather than a standard unit.

Land Rover Discovery Battery reference plate

A Genuinely Distinctive, Real Finding Worth Knowing — Land Rover Discovery Battery

If the battery keeps going flat seemingly at random, this is genuinely worth checking: one documented case traced this exact drain specifically to use of the central locking system, with a multimeter test confirming a significant draw that persisted for quite some time after the doors were locked or unlocked, rather than stopping immediately. It's worth testing whether the drain correlates specifically with using central locking before assuming a more general electrical fault.

A genuinely useful finding worth knowing about a misleading symptom: worn starter motor bearings can, in some documented cases, allow the starter rotor to short to earth, producing symptoms that look exactly like a dead battery when trying to start the engine, even though the battery itself is genuinely fine — worth having the starter motor checked if a battery repeatedly tests healthy yet the car still struggles or fails to start.

It's also genuinely worth knowing that opening a door wakes up a significant number of onboard computer modules each time, drawing meaningful power — worth propping a door open rather than repeatedly opening and closing it if you're accessing the car frequently over a short period, such as while camping, to help preserve charge.

Warning Signs, DIY Difficulty & Aftermarket Advice

These are the same regardless of make or model — see our full Battery Guide for warning signs to watch for, confirming fitment against your VIN, and matching the right technology (standard, EFB, AGM) when buying aftermarket.

More Land Rover Battery

The same part, covered across other Land Rover models.

Land Rover Discovery Battery: Specs, Fitment & Common Faults

OEM Part Number: LR104511

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A Genuinely Distinctive, Real Finding Worth Knowing — Land Rover Discovery Battery