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Kronobat SD-45.0 · Car battery 12V 45Ah 400A

Specifications

BrandKRONOBAT
Part numberSD-45.0
Voltage (V)12
Capacity (C20)45Ah (c20)
Cold cranking amps (EN)400A
TechnologyLead-acid
Length207.00 cm
Width175.00 cm
Height190.00 cm
See the full specifications →
Price: €35.40
VAT included
Quantity
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Brand: KRONOBAT Batteries Part number: SD-45.0

5,00· 1 review

Kronobat SD-45.0 12V 45Ah 400A 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
45 Ah C20
Cold cranking
400 A EN-1
Dimensions
207×175×190 mm
Technology
Lead-acid
Polarity
Positive on the right
Weight
11,7 kg
Model
STANDARD
5.00/5★★★★★1 reviewAll our reviews come from verified ordersSee the review
  • ★★★★★
    Todo fácil y correcto.
    José Manuel V.Verified purchaseOrder YXGATL

✦ Our favourite reviews ✦

Reviews originally written in Spanish

Logo Kronobat

Car battery Kronobat SD-45.0 Standard 45Ah 400A 12V

12VVoltage
45AhCapacity
400ACold cranking
11.70kgWeight

The Kronobat SD-45.0 car battery is rated at 12 V, 45 Ah and 400 A of cold cranking current (EN) from the Standard range, and is designed for passenger cars with conventional starting, without a Start-Stop system. Its 207 × 175 × 190 mm and the positive terminal on the right make it the exact replacement for the 45 Ah battery fitted as standard to many cars.

In short: the Kronobat SD-45.0 (45 Ah, 400 A, 207 × 175 × 190 mm, positive terminal on the right). It is a conventional battery for cars without Start-Stop: if yours has Start-Stop, it needs an EFB or AGM battery of the same size.

  • Designed to last several years under normal daily use.
  • Low self-discharge: copes with long stops without losing charge.
  • Stable voltage for the vehicle electronics (ECU, sensors, climate control).
  • Good balance of capacity, cranking power and price.

Dimensions, polarity and mounting

In terms of format, the Kronobat SD-45.0 measures 207 × 175 × 190 mm (length × width × height) and weighs 11.70 kg. The positive terminal on the right 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. For a direct replacement, the current battery tray must accept these dimensions and the same terminal layout; otherwise adapters will be needed or the hold-down will change.

What the Kronobat SD-45.0 is for

Designed for passenger cars with conventional starting, without a Start-Stop system, the Kronobat SD-45.0 is the direct replacement when your vehicle uses a 45 Ah battery of this format. Before buying, compare dimensions, terminals and capacity with the battery you are replacing. Check that it matches your current battery in dimensions, terminals and hold-down: this reference has a weight of 11.70 kg and 1.0 terminals.

The Kronobat SD-45.0: Standard range and conventional lead-acid technology

The Standard is the Kronobat range the SD-45.0 belongs to: it shares the same construction and quality criteria with the rest of the series, and varies in capacity and format to suit each vehicle.

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.

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. At baterias.com we work directly with the manufacturer or its official distributor: real stock, brand-new product and official warranty.

Warranty and coverage

The Kronobat SD-45.0 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.

Usage and maintenance tips

Avoid leaving lights or accessories on with the engine off: most batteries fail not through defects but through repeated deep discharges. On batteries with filler caps, check the electrolyte level and top up only with distilled water.

When you get it and how to return it

Orders placed before 6:00 pm with the battery in stock ship the same day. Delivery in mainland Spain and Portugal takes 24-48 working hours; for the Balearic Islands and the rest of the European Union allow 3 to 5 working days. You have 14 days to return an unused battery; in mainland Spain and Portugal collection is free. We email you the tracking number as soon as the parcel ships.

  • Reference
    BCOM-KRONOBAT-SD-45.0

Data sheet

  • Reference
    SD-45.0
  • Model
    STANDARD
  • Voltage (V)
    12
  • Length
    207.00 cm
  • Width
    175.00 cm
  • Height
    190.00 cm
  • Weight
    11.70 Kgs
  • Technology
    Lead-acid
  • Terminal layout
    Positive terminal on the right
  • Terminal type
    1.0
  • Cold cranking amps (EN)
    400A
  • Capacity (C20)
    45Ah (c20)

Specific References

  • MPN
    SD-45.0
5.00/5
★★★★★1 review
All our reviews come from verified orders
Latest verified reviews

Reviews originally written in Spanish

★★★★★José Manuel V.Verified purchaseOrder YXGATL
20/09/2026
Va muy bien de momento

Todo fácil y correcto.

Recommended accessories — complement the Kronobat SD-45.0 with a charger or tester

Fitting it yourself? Step-by-step guide to replacing the battery →

Frequently asked questions

How is the Kronobat SD-45.0 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 our blog. 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 — with positive on the right 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.

How long does the Kronobat SD-45.0 battery last?

Expected lifespan of the Kronobat SD-45.0 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-45.0 model?

Dimensions (length × width × height) are 207×175×190 mm — also written as 207x175x190 mm and correspond to the European L1 case size — 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.

What polarity does the Kronobat SD-45.0 battery have?

Polarity: positive on the right. To identify it, place the battery in front of you with the terminals facing you and check which side the positive (+, marked with a red ring) is on. Before buying, verify the polarity matches your current battery: switching polarity forces longer cables or system reconfiguration, with short-circuit risk.

Will the Kronobat SD-45.0 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-45.0 typically fits a wide range of European vehicles thanks to its standard DIN case format.

Which batteries are equivalent to the Kronobat SD-45.0?

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.


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