Kronobat EV-80-AGM EV AGM Start Stop · Battery 80Ah 800A

Yes: the EV-80-AGM from Kronobat uses AGM (Absorbent Glass Mat) technology, a sealed lead-acid battery whose electrolyte soaks a glass-fibre mat. Compared with a conventional battery it withstands more charge/discharge cycles and handles heat better; it is the required technology for cars with advanced Start-Stop and regenerative braking.

AGM batteries support advanced Start-Stop and regenerative braking thanks to their higher cycle count. The Kronobat EV-80-AGM is AGM, so yes, it is designed for Start-Stop cars. It works once fitted; on most modern cars, registering it via OBD is advisable so the alternator applies the optimum charging profile. As a rule: EFB for basic Start-Stop, AGM when there is also regenerative braking (more cycles); in any case, what the car manufacturer specifies.

If the car has Start-Stop or BMS: a) the technology must match the original (AGM or EFB) or be higher, because a conventional battery would fail within months; b) undo the negative cable at its nut, leaving the IBS sensor in place; c) it is advisable to register the battery via OBD so the alternator applies the proper charging profile. Allow 15-30 minutes and a 10 mm spanner for a L4 case like this one. If the car keeps its battery in the boot or under a seat, it can take up to twice as long. 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.

As a rough estimate, the Kronobat EV-80-AGM typically lasts 5 to 8 years in mild-climate car use with Start-Stop; it is a guide figure, not a guaranteed period. 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.

Measure your car's battery tray first; if the battery exceeds it by even a millimetre, the hold-down clamp may not close. Length × width × height: 315x175x190 mm (L4 case). Height is measured to the top of the terminals.

Polarity of the Kronobat EV-80-AGM: positive on the right. Seen from the front, terminals towards you, the positive (+) is the post with the red ring. Compare it with the battery you are replacing: if it does not match, cables must be lengthened or the system reconfigured, with a risk of short circuit.

The EV-80-AGM typically fits a wide range of European vehicles thanks to its standard DIN case format. 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)). If our table and the car handbook disagree, go with what the manufacturer says.

The "Equivalents" section of this page gathers the recommended options with equivalent performance; remember that in Start-Stop cars an EFB should not be replaced with a conventional battery. A battery interchangeable with the Kronobat EV-80-AGM must match it on dimensions (315×175×190 mm), polarity (positive on the right), capacity (80 Ah) and cranking current (800 A).

Same case and same technology as the EV-80-AGM: an alternative by size, not an official equivalent. Compared with the EV-80-AGM it has the same Ah and cranking power. It costs 29,95 € more. If the polarity matches and your car had a similar capacity, it works as a replacement; if in doubt, ask us with your model.

Same case and same technology as the EV-80-AGM: an alternative by size, not an official equivalent. Compared with the EV-80-AGM it has 2 Ah more. It costs 9,20 € less. If the polarity matches and your car had a similar capacity, it works as a replacement; if in doubt, ask us with your model.

Capacity of the EV-80-AGM: 80 Ah. Many more charge/discharge cycles than a conventional battery and no leaks: that is what AGM technology brings, with the electrolyte absorbed in glass fibre. Hence it is recommended for advanced Start-Stop with regenerative braking, such as BMW EfficientDynamics, Mercedes Eco, Audi MHEV, Land Rover ECO or Volvo i-Stop, and it handles tilting, vibration and extreme temperatures better than an EFB.

The alternator detects the new battery and adapts the charge automatically, so on most cars it is not compulsory. Even so, it is advisable to register it via OBD so charging is optimum from the first minute and the battery lasts longer, particularly on BMW, Mercedes, Audi, Volvo or Land Rover, with more sophisticated BMS. Without registration there is no starting problem: the alternator adjusts the profile within a few days. Any workshop with an OBD scanner does it in a few minutes; DIY, with VCDS or Carista (VAG group), Bimmercode (BMW) or iCarsoft.