Tudor TL752 EFB Microhybrid · Start-Stop battery 75Ah 730A

Yes: the TL752 (75 Ah) is an EFB, an evolution of the flooded lead-acid battery with additives that strengthen the plates. It withstands more cycles than a conventional battery but fewer than an AGM, and it is fitted to cars with basic Start-Stop, without regenerative braking. It is more affordable than an equivalent AGM.

Yes, the EFB technology of the TL752 is built for Start-Stop. EFB batteries cover basic Start-Stop (no regenerative braking). Once fitted it is ready to go; registering it via OBD, advisable on most modern models, lets the alternator charge with the optimum profile. The general recommendation is EFB for basic Start-Stop and AGM where there is regenerative braking (it handles more cycles), unless the car manufacturer says otherwise.

Allow 15-30 minutes and a 10 mm spanner for a LB4 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. 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. 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. If the car manufacturer lists any extra step in the handbook, follow it. More detail in how to replace the car battery.

There is no exact figure: for a battery such as the Tudor TL752 (EFB), a reasonable guide is 4 to 6 years in basic Start-Stop car use. Actual lifespan varies with climate (cold starts, heat evaporating the electrolyte), with usage and short journeys, with the condition of the alternator and charging system, with power draw while parked and with maintenance; the type of car and Start-Stop also count.

Measure the battery tray before ordering: a one-millimetre difference is enough for the hold-down clamp not to close. It measures 315×175×175 mm in length × width × height, with the terminals included in the height; that is the European LB4 case size.

It has the positive on the right (polarity). Put it in front of you, terminals towards you: the post with the red ring and the + sign is the positive. A change of polarity from the original means longer cables or a reconfigured system and can cause a short circuit: check it before ordering.

The quickest way is to enter your number plate in the finder: DGT/DVLA/KBA detect model and engine. You can also look at the "Compatible vehicles" tab, verified by our technical team, or send us make, model, engine and year on WhatsApp; we answer during business hours (Mon–Fri 10:00–13:30 and 16:30–18:00 (Spanish time, CET)). Our database holds 67 verified vehicle versions for the Tudor TL752. In every case, the car manufacturer's specifications (owner's handbook) take precedence.

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 TL752 offers: 315×175×175 mm, positive on the right, the same Ah and CCA and EFB technology.

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. 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.

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. Any workshop with an OBD scanner does it in a few minutes; DIY, with VCDS or Carista (VAG group), Bimmercode (BMW) or iCarsoft. Even if you do not register the Tudor TL752, the car will start correctly; the profile adjusts within a few days.