Tudor TL652 EFB Microhybrid · Start-Stop battery 65Ah 650A

Yes: the TL652 (65 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.

EFB batteries cover basic Start-Stop (no regenerative braking). The Tudor TL652 is EFB, so yes, it is designed for Start-Stop cars. 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.

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. With the engine stopped and the key removed, always start with the negative (−) terminal, then the positive (+). Free the clamp, swap the battery without turning it round (this one has positive on the right) so the polarity stays the same, and reconnect in reverse: positive (+) first, negative (−) last. With Start-Stop there are three more points: the negative terminal usually carries a battery sensor (IBS), so undo the cable at the terminal nut without removing the sensor; register the battery via OBD so the alternator applies the correct charging profile; and fit the same technology as the original (AGM or EFB) or higher, because a conventional battery wears out within months. If the car manufacturer lists any extra step in the handbook, follow it. More detail in how to replace the car battery.

As a rough estimate, the Tudor TL652 typically lasts 4 to 6 years in basic Start-Stop car use; 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.

Its dimensions are 278×175×175 mm, also written 278x175x175 mm; the height already includes the terminals. In European terms it is a LB3 case. Check the room available in your car, because a single millimetre too much can stop the clamp from closing.

Polarity of the Tudor TL652: positive on the right. It must match your current battery: reversed polarity means lengthening cables or reconfiguring the system, with a risk of short circuit. Seen from the front, terminals towards you, the positive (+) is the post with the red ring.

Our database holds 55 verified vehicle versions for the Tudor TL652. 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)). Always cross-check with what the car manufacturer states in the owner's handbook.

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 direct equivalent needs what this TL652 offers: 278×175×175 mm, positive on the right, the same Ah and CCA and EFB technology.

The Varta alternative that fits where the TL652 goes, with the same polarity. Compared with the TL652 it has the same Ah and cranking power. It costs 22,00 € more. A straight swap with nothing to adapt; the difference is the price and the brand you prefer.

It is the verified Exide equivalent for the TL652 tray. Compared with the TL652 it has the same Ah and cranking power. It costs 24,50 € more. Decide by price, brand preference and availability: both fit and crank the same.

It is still flooded lead-acid, but an EFB reinforces the plates with carbon and polyethylene and uses thicker grids. That gives it more cycles than a conventional battery and deeper discharge tolerance, though less than an AGM. Renault Energy TCe, Peugeot/Citroën PureTech, Fiat MultiAir, Hyundai/Kia ISG and Ford EcoBoost are examples of basic Start-Stop (no regenerative braking) fitted with it from new. EFB is the right technology if your car came with one from the factory (moving up to AGM is optional and the gain marginal). If it came with an AGM, fit an AGM instead.

Advisable, yes; essential, on most cars, no. Registering it via OBD makes the alternator charge with the optimum profile from the first minute and extends battery life, which matters most on brands with sophisticated BMS such as BMW, Mercedes, Audi, Volvo or Land Rover. Without registration there is no starting problem: the alternator adjusts the profile within a few days. A workshop only needs an OBD scanner and a few minutes. DIY apps: VCDS / Carista (VAG), Bimmercode (BMW), iCarsoft.