How long does a Start-Stop EFB or AGM battery last?

An EFB typically lasts 3-5 years and an AGM 4-6 years under normal use, depending on climate and driving habits.

What happens if I fit a conventional SLI battery in a Start-Stop car?

It degrades within 6-12 months because it isn't built for the frequent, deep stop/start cranking cycles.

How do I know if my car needs EFB or AGM?

It depends on whether Start-Stop includes regenerative braking (then AGM) or is basic (EFB); check the original battery's label or enter your plate in our finder.

Does a Start-Stop battery need coding or a reset after replacement?

Many German vehicles (BMW, Mercedes, Audi, VW) require registering the new battery in the energy-management system; check the manual or visit a garage.

Is any AGM Start-Stop battery compatible across brands?

It must match the original in capacity (Ah), cranking current (A/EN), dimensions and polarity; our plate-based finder shows the compatible references.

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Start-Stop EFB and AGM batteries: the battery your car requires

More than 150 Start-Stop batteries, EFB and AGM, from Varta, Tudor and Exide, 50 to 110 Ah, with live prices and stock. Start-Stop puts the battery through dozens of cycles a day: a conventional one lasts months; an EFB or AGM lasts years.

If your car came with AGM from the factory it must get AGM. If it came with EFB you can fit EFB or upgrade to AGM. Enter your plate and we tell you which; cars with battery management may need the new battery registered.

If your car has Start-Stop, the battery must be EFB (basic system) or AGM (regenerative braking, high loads, or if it came with AGM from the factory). Never a conventional one: it lasts one winter. Compare prices by capacity below.

By number plate By make and model By capacity and price

Price from, by capacity and technology

Capacity	EFB (basic Start-Stop)	AGM (regenerative braking)
50-59 Ah	from €76.95Tudor TL550	from €118.90Varta A9
60-69 Ah	from €76.80Exide EL600	from €93.30Exide EK600
70-79 Ah	from €81.70Tudor TL752	from €103.80Exide EK700
80-94 Ah	from €89.90Exide EL800	from €119.20Exide EK800
95-110 Ah	from €108.60Tudor TL1000	from €140.10Exide EK960

Prices include VAT and reflect live stock, updated hourly. Click a price to open the battery.

There are 156 products.

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On sale!

VARTA

Start-Stop battery Varta A7 12V 70Ah 760A AGM

12V

70Ah

760A

AGM

278 × 175 × 190 mm

4,78(67)

€148.78 VAT incl.

Buy

On sale!

VARTA

Start-Stop battery Varta E39 12V 70Ah 760A AGM

12V

70Ah

760A

AGM

278 × 175 × 190 mm

4,83(24)

€139.05 VAT incl.

Buy

On sale!

VARTA

Start-Stop battery Varta A6 12V 80Ah 800A AGM

12V

80Ah

800A

AGM

315 × 175 × 190 mm

4,93(14)

€147.30 VAT incl.

Buy

VARTA

Start-Stop battery Varta N70 12V 70Ah 760A EFB

12V

760

EFB

278 × 175 × 190 mm

4,32(19)

€124.98 VAT incl.

Buy

VARTA

Start-Stop battery Varta F21 12V 80Ah 800A AGM

12V

80Ah

800A

AGM

315 × 175 × 190 mm

4,80(15)

€147.30 VAT incl.

Buy

On sale!

VARTA

Start-Stop battery Varta A5 12V 95Ah 850A AGM

12V

95Ah

850A

AGM

353 × 175 × 190 mm

3,67(6)

€179.99 VAT incl.

Buy

VARTA

Start-Stop battery Varta N60 12V 60Ah 640A EFB

12V

640

EFB

242 × 175 × 190 mm

4,70(10)

€91.40 VAT incl.

Buy

VARTA

Start-Stop battery Varta A8 12V 60Ah 680A AGM

12V

60Ah

680A

AGM

242 × 175 × 190 mm

4,43(7)

€107.40 VAT incl.

Buy

On sale!

VARTA

Start-Stop battery Varta G14 12V 95Ah 850A AGM

12V

95Ah

850A

AGM

353 × 175 × 190 mm

5,00(3)

€170.60 VAT incl.

Buy

EXIDE

Start-Stop battery Exide EL700 12V 70Ah 760A EFB

12V

70Ah

760A

EFB

278 × 175 × 190 mm

4,45(11)

€84.60 VAT incl.

Buy

VARTA

Start-Stop battery Varta A4 12V 105Ah 950A AGM

12V

105Ah

950A

AGM

394 × 175 × 190 mm

4,88(8)

€172.80 VAT incl.

Buy

EXIDE

Start-Stop battery Exide EK700 12V 70Ah 760A AGM

12V

72Ah

760A

AGM

278 × 175 × 190 mm

€103.80 VAT incl.

Buy

VARTA

Start-Stop battery Varta D52 12V 60Ah 680A AGM

12V

60Ah

680A

AGM

242 × 175 × 190 mm

2,50(2)

€107.80 VAT incl.

Buy

EXIDE

Start-Stop battery Exide EK800 12V 80Ah 800A AGM

12V

82Ah

800A

AGM

315 × 175 × 190 mm

5,00(4)

€119.20 VAT incl.

Buy

EXIDE

Start-Stop battery Exide EL600 12V 60Ah 640A EFB

12V

60Ah

640A

EFB

242 × 175 × 190 mm

5,00(3)

€76.80 VAT incl.

Buy

VARTA

Start-Stop battery Varta H15 12V 105Ah 950A AGM

12V

105Ah

950A

AGM

393 × 175 × 190 mm

5,00(2)

€172.80 VAT incl.

Buy

TUDOR

Start-Stop battery Tudor TK720 12V 72Ah 760A AGM

12V

72Ah

760A

AGM

278 × 175 × 190 mm

5,00(4)

€108.60 VAT incl.

Buy

TUDOR

Start-Stop battery Tudor TL700 12V 70Ah 760A EFB

12V

70Ah

760A

EFB

278 × 175 × 190 mm

€95.40 VAT incl.

Buy

Showing 1-18 of 156 item(s)

EFB vs AGM in Start-Stop

EFB is the direct upgrade from SLI: thicker plates, reinforced separators, double the cycles. Good for basic Start-Stop on superminis and compacts without energy recovery. AGM wraps the electrolyte in a fibreglass mat, tolerates 90° tilt, is spill-proof and triples SLI cycle life. It's mandatory for Start-Stop with regenerative braking (BMW EfficientDynamics, Mercedes BlueEFFICIENCY, Audi e-tron quattro, Volvo Drive-E) and strongly recommended on cars with heavy electrical loads (premium audio, heated seats, dashcam).

If your car came with AGM, never downgrade to EFB or SLI

The vehicle's charging system is calibrated for the AGM profile. Dropping technology burns out the battery within months and can disable electronic features (comfort locking, parking sensors, dashcam).

Compatibility and how to choose the right Start-Stop battery

Enter your make, model, engine and year in our plate-based battery finder or use the comparison tool to confirm whether your car needs EFB or AGM, and compare capacity (Ah), cranking current (A/EN) and dimensions before buying.

Leading brands

Frequently asked questions about Start-Stop batteries

How long does a Start-Stop EFB or AGM battery last?: An EFB typically lasts 3-5 years and an AGM 4-6 years under normal use, depending on climate and driving habits.
What happens if I fit a conventional SLI battery in a Start-Stop car?: It degrades within 6-12 months because it isn't built for the frequent, deep stop/start cranking cycles.
How do I know if my car needs EFB or AGM?: It depends on whether Start-Stop includes regenerative braking (then AGM) or is basic (EFB); check the original battery's label or enter your plate in our finder.
Does a Start-Stop battery need coding or a reset after replacement?: Many German vehicles (BMW, Mercedes, Audi, VW) require registering the new battery in the energy-management system; check the manual or visit a garage.
Is any AGM Start-Stop battery compatible across brands?: It must match the original in capacity (Ah), cranking current (A/EN), dimensions and polarity; our plate-based finder shows the compatible references.

Catalogue curated by our technical team. 12,107 Trustpilot reviews · 4.5/5. 24-48 h delivery in mainland Spain and Portugal (orders before 6:00 pm); 14-day returns with free collection on the Iberian mainland.

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