Tudor TK720 AGM Microhybrid · Start-Stop battery 72Ah 760A

Yes. AGM (Absorbent Glass Mat) technology, 72 Ah and 12 V: sealed lead-acid, with the electrolyte held in glass fibre. It is the technology required by cars with advanced Start-Stop and regenerative braking. It withstands more cycles than a conventional battery and copes better with heat.

AGM batteries support advanced Start-Stop and regenerative braking thanks to their higher cycle count. The Tudor TK720 is AGM, so yes, it is designed for Start-Stop cars. If the car recovers energy when braking, AGM is recommended for its higher cycle count; for basic Start-Stop, EFB. The manufacturer's specification comes first. Registering it via OBD is advisable on most modern cars (the alternator then applies the optimum profile), but it works from the start.

Allow 15-30 minutes and a 10 mm spanner for a L3 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. 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. What matters most is the terminal order: removing, negative (−) before positive (+); refitting, positive (+) before negative (−). In between, with the engine off and the key out, release the clamp and fit the new battery the same way round as the original, positive on the right (polarity). Our blog guide covers it in detail; if the owner's handbook describes a different procedure, follow the manufacturer.

As a rough estimate, the Tudor TK720 typically lasts 5 to 8 years in mild-climate car use with Start-Stop; it is a guide figure, not a guaranteed period. It can vary considerably with usage (short or long journeys), temperature, the condition of the alternator and charging system, power drawn with the engine off and maintenance, plus the car itself and Start-Stop. Cold demands more at every start and intense heat evaporates the electrolyte.

It measures 278×175×190 mm in length × width × height, with the terminals included in the height; that is the European L3 case size. Measure the battery tray before ordering: a one-millimetre difference is enough for the hold-down clamp not to close.

Polarity of the Tudor TK720: positive on the right. If your current battery has its positive on the other side, this one is not suitable without longer cables or a reconfigured system (short-circuit risk). Seen from the front, terminals towards you, the positive (+) is the post with the red ring.

Not sure? Try your number plate in the finder (DGT/DVLA/KBA detect model and engine) or the "Compatible vehicles" tab, checked by our technical team; if your car is not there, send us make, model, engine and year on WhatsApp and we will reply 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. According to our data, 1,221 verified vehicle versions are compatible with the TK720.

Interchangeable means the same dimensions, same polarity, same Ah and same CCA; for the TK720, 72 Ah (760 A cranking). Technology matters too: in Start-Stop cars, an EFB cannot be replaced with a conventional battery. The options at the same level are in the "Equivalents" section of this page.

Compared with an EFB it resists tilted positions, heavy vibration and extreme temperatures better, and it is the recommended option where there is regenerative braking (BMW EfficientDynamics, Mercedes Eco, Audi MHEV, Land Rover ECO, Volvo i-Stop). AGM means Absorbent Glass Mat: the electrolyte soaks a glass-fibre mat (no spills), and an AGM battery lasts many more cycles than a conventional one. The Tudor TK720 has a capacity of 72 Ah.

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 Tudor TK720, the car will start correctly; the profile adjusts within a few days.