Kronobat PE-80-EFB Premium EFB · Start-Stop battery 80Ah 800A

Yes: the PE-80-EFB (80 Ah) is an EFB, an evolution of the flooded lead-acid battery with additives that strengthen the plates. For cycles it sits between a conventional battery and an AGM, and it costs less than an equivalent AGM; it is the technology for cars with basic Start-Stop, without regenerative braking.

Yes. It is a EFB battery of 80 Ah, designed for vehicles with Start-Stop. EFB batteries cover basic Start-Stop (no regenerative braking). Basic Start-Stop: EFB. Start-Stop with regenerative braking: AGM, which withstands more cycles. Check the handbook for the technology the car manufacturer requires. It needs nothing to work, though on most modern cars registering it via OBD is advisable so the alternator adjusts its charging profile.

On cars with Start-Stop or BMS, registering the battery via OBD makes the alternator charge with the correct profile. Mind the IBS sensor on the negative terminal too: loosen the cable nut, not the sensor. And the replacement must be the same technology (AGM or EFB) or higher: a conventional battery fails within months. Tool: a 10 mm spanner. Time: 15-30 minutes on almost every car, and up to double if the battery is not under the bonnet but in the boot or under a seat. Steps: 1) switch off and remove the key; 2) find the battery (bonnet, boot or under a seat); 3) undo the negative (−), then the positive (+); 4) remove the clamp and the old battery; 5) fit the new one facing the same way (positive on the right) to match the polarity; 6) connect the positive (+) and finally the negative (−). For the detail, read our guide to replacing the car battery and, if in doubt, the owner's handbook or a main dealer.

Estimated lifespan of the Kronobat PE-80-EFB: 4 to 6 years in basic Start-Stop car use. Treat it as an approximate guide, as every case is different. What weighs most: temperature (cold makes starts harder and intense heat evaporates the electrolyte), frequent short trips, the condition of the alternator and charging system, power draw while parked and maintenance, not forgetting the type of car and Start-Stop.

It measures 315×175×190 mm in length × width × height, with the terminals included in the height; that is the European L4 case size. Measure the battery tray before ordering: a one-millimetre difference is enough for the hold-down clamp not to close.

The PE-80-EFB has the positive on the right in a L4 case: that is its polarity. It must match your current battery: reversed polarity means lengthening cables or reconfiguring the system, with a risk of short circuit. Face the battery with its terminals nearest you and see which side the positive post (+, red ring) is on.

Three routes: the "Compatible vehicles" tab on this page, with the vehicles verified by our technical team; your number plate in the finder, from which DGT/DVLA/KBA detect model and engine; and WhatsApp, with make, model, engine and year, during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). In every case, the car manufacturer's specifications (owner's handbook) take precedence. The PE-80-EFB typically fits a wide range of European vehicles thanks to its standard DIN case format.

Not just any technology will do: an EFB cannot be replaced with a conventional battery in Start-Stop cars. The "Equivalents" section further down lists the recommended alternatives. A battery interchangeable with the Kronobat PE-80-EFB must match it on dimensions (315×175×190 mm), polarity (positive on the right), capacity (80 Ah) and cranking current (800 A).

A technology step up: sealed AGM, with stronger cranking and a noticeably longer life than the PE-80-EFB when the car draws a lot of power. Compared with the PE-80-EFB it has the same Ah and cranking power. It costs 15,55 € more. Choose it if your car required it from the factory or if you want the longest-lasting battery for this size; for normal use without Start-Stop, the PE-80-EFB is plenty.

The AGM of this size: what cars with Start-Stop and regenerative braking fit from the factory, and a real durability upgrade over the PE-80-EFB. Compared with the PE-80-EFB it has the same Ah and cranking power. It costs 45,50 € more. Essential if your car has Start-Stop, regenerative braking or came with AGM; without those systems it is an upgrade you do not need to pay for.

EFB from the factory? Stay with EFB; AGM is optional and only a marginal improvement. AGM from the factory? Then fit an AGM, because an EFB would fall short. This PE-80-EFB is an EFB. An EFB (Enhanced Flooded Battery) is flooded lead-acid, but reinforced: carbon and polyethylene additives in the plates and thicker grids. It handles more cycles than a conventional battery and copes better with deep discharges, though less well than an AGM. Its place is basic Start-Stop without regenerative braking, fitted from new in, for example, Renault Energy TCe, Peugeot/Citroën PureTech, Fiat MultiAir, Hyundai/Kia ISG or Ford EcoBoost.

It is not strictly necessary on most cars, because the alternator detects the change and adapts the charge. The advisable step is to register it via OBD: the charging profile is optimum from the first minute and the battery lasts longer, especially on brands with sophisticated BMS (BMW, Mercedes, Audi, Volvo, Land Rover). Any garage with an OBD scanner can do it in a few minutes. If you prefer to do it yourself: VCDS / Carista (VAG), Bimmercode (BMW) or iCarsoft. Even if you do not register the Kronobat PE-80-EFB, the car will start correctly; the profile adjusts within a few days.