Kronobat SD-91.1T · Car battery 12V 91Ah 740A
Specifications
| Brand | KRONOBAT |
|---|---|
| Part number | SD-91.1T |
| Voltage (V) | 12 |
| Capacity (C20) | 91Ah (c20) |
| Technology | Lead-acid |
| Length | 306.00 cm |
| Width | 173.00 cm |
| Height | 225.00 cm |
| Weight | 21.70 Kgs |
€91.60
VAT included
Polarity: positive on the left. Check it matches your current battery before buying.
Kronobat SD-91.1T 12V 91Ah 740A is a ready-to-use passenger car battery, sealed and maintenance-free. Delivers the cranking amps the engine needs in cold weather and keeps stable voltage for modern car loads (ECU, sensors, climate control, infotainment).
Why this car battery?
- Original-equipment qualitywithout dealership prices
- Lasts 4 to 6 yearsbuy once instead of twice
- Real human tech supportif you have any doubts before buying
Voltage
12 V
Capacity
91 Ah
Cold cranking
740 A
Dimensions
306×173×225 mm
Technology
Lead-acid
Polarity
Positive on the left
Weight
21,7 kg
Model
STANDARD
Car battery Kronobat SD-91.1T Standard 91Ah 740A 12V
12VVoltage
91AhCapacity
740ACold cranking
21.70kgWeight
The Kronobat SD-91.1T from the Standard range delivers 91 Ah and 740 A of cold cranking current (EN) at 12 V: the usual specification for passenger cars with conventional starting, without a Start-Stop system. It replaces the original battery without adaptation in cars with a 306 × 173 × 225 mm format: same 91 Ah capacity and the positive terminal on the left.
- Direct replacement for the original battery in size and terminals.
- Original-equipment build quality without the dealership price.
- Conventional lead-acid: the most proven and economical technology.
- Reliable cold starts, even after weeks without driving.
What the Kronobat SD-91.1T is for
The Kronobat SD-91.1T covers the needs of passenger cars with conventional starting, without a Start-Stop system: reliable starting, stable voltage for the electronics and a service life of several years in daily use. Check that it matches your current battery in size and terminal position. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 21.70 kg and 1.0 terminals.
Size, terminals and hold-down of the Kronobat SD-91.1T
The Kronobat SD-91.1T is made in the 306 × 173 × 225 mm format and weighs 21.70 kg. The positive terminal on the left decides which side the cables end up on: it is the detail that causes most buying mistakes, so check it before ordering. It uses 1.0 terminals, the system that anchors and connects it in the vehicle. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.
What Kronobat does differently
With Kronobat we offer an own-brand alternative without compromising on quality: European manufacturing, original-equipment controls and the direct backing of baterias.com for warranty and advice. We guarantee that every Kronobat arrives new, charged and with the manufacturer's full warranty.
The Kronobat SD-91.1T: Standard range and conventional lead-acid technology
The SD-91.1T is part of the Kronobat Standard range. Choosing the right reference within the series comes down to capacity, dimensions and terminals: technology and quality are common to the whole family.
In a conventional battery the electrolyte is liquid and the lead plates are immersed in it. It is a mature, economical and easily recycled technology, ideal for starting vehicles in normal use.
How to make it last longer
In normal daily use the alternator keeps the battery charged; if the car stands for weeks, a maintenance charge once a month prevents deep discharge. Keep the terminals clean and tight, and check that the resting voltage does not drop below 12.4 V: below that it is time to recharge.
Official warranty
The Kronobat SD-91.1T comes with the manufacturer's official warranty against manufacturing defects; the exact period is stated in the brand's conditions. If it fails through a defect within the period, we replace it free of charge.
Delivery times and returns
Same-day dispatch from our warehouse for in-stock orders placed before 6:00 pm: 24-48 working hours in mainland Spain and Portugal, 3 to 5 days in the islands and the rest of Europe. Returns are accepted for 14 days if the battery has not been used (free collection on the Iberian mainland). You will receive tracking by email.
BCOM-KRONOBAT-SD-91.1T
Data sheet
- Reference
- SD-91.1T
- Model
- STANDARD
- Voltage (V)
- 12
- Length
- 306.00 cm
- Width
- 173.00 cm
- Height
- 225.00 cm
- Weight
- 21.70 Kgs
- Technology
- Lead-acid
- Terminal layout
- Positive terminal on the left
- Terminal type
- 1.0
- Cold cranking amps (EN)
- 740A
- Capacity (C20)
- 91Ah (c20)
Specific References
- MPN
- SD-91.1T
Recommended accessories
How to change the battery
Step-by-step guide to replace your car battery in 15-30 minutes (longer if the battery is under the seat or in the boot) without losing vehicle settings.
Step 1. Prepare the vehicle
Park on a flat surface, switch off the engine and remove the key. Make sure all lights and electrical accessories are off. Wait 1-2 minutes before starting.
Step 2. Locate the battery
Open the bonnet. The battery is usually in the engine bay, but in many modern cars it may be in the boot or under the passenger seat. Check the manual if you cannot find it.
Step 3. Disconnect the negative (−) terminal
Use the 10 mm wrench to loosen the negative cable nut (black, marked −) and remove the cable from the post. Move it aside so it cannot touch any bodywork.
Step 4. Disconnect the positive (+) terminal
Repeat with the positive cable (red, marked +). Important: never let a terminal touch metal of the car while the other is still connected.
Step 5. Remove the old battery
Loosen the bottom hold-down clamp with the same wrench. Lift the battery carefully (it can weigh 15-25 kg). Clean the tray with a brush and baking soda if there is corrosion.
Step 6. Install the new battery
Place the battery in the same orientation as the old one (positive terminal on the same side). Tighten the hold-down clamp firmly.
Step 7. Connect the cables
Connect the positive (+) terminal first, then the negative (−). Tighten the nuts with the wrench until each terminal does not move. Apply anti-spark grease if you have any.
Step 8. Verify the engine starts
Close the bonnet. Start the engine to confirm everything works. On cars with Start-Stop or a BMS, you may need to register the battery via OBD so the alternator applies the correct charging profile.
Frequently asked questions
How is the Kronobat SD-91.1T battery installed in the vehicle?
In most cars it fits in 15-30 minutes with a 10 mm wrench; if the battery is under the seat or in the boot the time can double. See the step-by-step guide on this page. Quick summary: 1) switch off the engine and remove the key; 2) locate the original battery (engine bay, boot or under seat); 3) disconnect the negative (−) terminal first, then the positive (+); 4) loosen the hold-down clamp and remove the old battery; 5) fit the new one in the same orientation — match the polarity shown on the product sheet; 6) connect the positive (+) first, then the negative (−). On cars with Start-Stop or BMS, register the battery via OBD so the alternator applies the correct charging profile.
What is the service life of the SD-91.1T model?
Expected lifespan of the Kronobat SD-91.1T is 4 to 6 years in regular car use without Start-Stop. In cold regions it drops slightly due to cold-start stress; in very hot regions it also drops because of electrolyte evaporation. To extend its life: avoid deep discharges (headlights on with engine off), have the alternator checked yearly, and keep the battery clean and properly secured.
What are the measurements of the SD-91.1T model?
Dimensions (length × width × height) are 306×173×225 mm — also written as 306x173x225 mm — following the European DIN standard. Always measure the space in your car before buying: even one extra millimetre can prevent the hold-down clamp from closing. The height shown includes the terminals.
Does this battery fit my car?
Three options to confirm: 1) enter your number plate in the finder (DGT/DVLA/KBA auto-detect your model and engine); 2) check the "Compatible vehicles" tab on this page, where we list every vehicle verified by our technical team; 3) if you cannot find your model, message us on WhatsApp with brand, model, engine and year — we reply during business hours (Mon–Fri 10:00–13:30 and 16:40–18:00 (Spanish time, CET)). The SD-91.1T typically fits a wide range of European vehicles thanks to its standard DIN case format.
What are the equivalents of the SD-91.1T model?
Directly interchangeable batteries (same dimensions, same polarity, same Ah and CCA) are the OEM equivalents from leading brands: Bosch, Tudor, Exide and, depending on the model, Banner or Yuasa. Exact equivalence depends on technology — an EFB cannot be replaced with a conventional battery in Start-Stop cars. See the "Equivalents" section to view recommended options at the same performance level.
The top-rated online battery store in Spain
-
Audited by Trustpilot, no filters, no edits. The top-rated battery store in Spain.
Trustpilot · verified, no filters
-
Official Varta distributor
Official Varta wholesale distributor. 100% genuine batteries, recently manufactured, best price and no middlemen.
World’s best-selling battery brand
-
+100,000 satisfied customers
More than 100,000 customers already trust baterias.com — and recommend us to their friends and family.
They trust us and recommend us
Choose trust, choose quality, choose baterias.com.