Kronobat SD-40.0B · Car battery 12V 40Ah 340A
Specifications
| Brand | KRONOBAT |
|---|---|
| Part number | SD-40.0B |
| Voltage (V) | 12 |
| Capacity (C20) | 40Ah (c20) |
| Technology | Lead-acid |
| Length | 175.00 cm |
| Width | 175.00 cm |
| Height | 190.00 cm |
| Weight | 10.90 Kgs |
€75.10
VAT included
Kronobat SD-40.0B 12V 40Ah 340A is a starter battery with OEM-equivalent quality, designed for modern passenger cars. Delivers reliable cold-cranks even after weeks of inactivity and supports stable auxiliary loads (lights, 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
40 Ah
Cold cranking
340 A
Dimensions
175×175×190 mm
Technology
Lead-acid
Polarity
Positive on the right
Weight
10,9 kg
Model
STANDARD
Car battery Kronobat SD-40.0B Standard 40Ah 340A 12V
12VVoltage
40AhCapacity
340ACold cranking
10.90kgWeight
The Kronobat SD-40.0B car battery is rated at 12 V, 40 Ah and 340 A of cold cranking current (EN) from the Standard range, and is designed for passenger cars with conventional starting, without a Start-Stop system. It measures 175 × 175 × 190 mm and the positive terminal on the right, the format sought by anyone replacing a 40 Ah battery in cars.
- Reliable cold starts, even after weeks without driving.
- Conventional lead-acid: the most proven and economical technology.
- Original-equipment build quality without the dealership price.
- Direct replacement for the original battery in size and terminals.
What the Kronobat SD-40.0B is for
The Kronobat SD-40.0B 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 10.90 kg and 1.0 terminals.
Will it fit your current battery tray?
In terms of format, the Kronobat SD-40.0B measures 175 × 175 × 190 mm (length × width × height) and weighs 10.90 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. Checking the three dimensions and the terminal position before buying avoids the most common mistake when replacing a battery.
The Kronobat SD-40.0B: Standard range and conventional lead-acid technology
The Standard is the Kronobat range the SD-40.0B 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.
Why choose Kronobat batteries
Kronobat is the exclusive brand of baterias.com: batteries made to the same production standards as the leading brands, with a value for money that is hard to match and an official warranty. All the Kronobat batteries in our catalogue are genuine product, recently manufactured and covered by the manufacturer's warranty.
Manufacturer's warranty
The Kronobat SD-40.0B 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
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. 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.
Delivery times and returns
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 and Canary 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.
BCOM-KRONOBAT-SD-40.0B
Data sheet
- Reference
- SD-40.0B
- Model
- STANDARD
- Voltage (V)
- 12
- Length
- 175.00 cm
- Width
- 175.00 cm
- Height
- 190.00 cm
- Weight
- 10.90 Kgs
- Technology
- Lead-acid
- Terminal layout
- Positive terminal on the right
- Terminal type
- 1.0
- Cold cranking amps (EN)
- 340A
- Capacity (C20)
- 40Ah (c20)
Specific References
- MPN
- SD-40.0B
Comparison: Kronobat SD-40.0B vs equivalents
The Kronobat SD-40.0B is interchangeable with these equivalent references: A16 (Varta).
| Product | Specifications | Technology | Price |
|---|---|---|---|
Kronobat
SD-40.0B
This battery
|
12V 40Ah 340A | Lead-acid | €75.10 |
Varta
A16
|
12V 40Ah 340A | Lead-acid | €65.30 |
Equivalences verified by our technical team: same dimensions, polarity, capacity and CCA. Official manufacturer warranty on every option.
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 do I fit the SD-40.0B model in my car?
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-40.0B model?
Expected lifespan of the Kronobat SD-40.0B 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 dimensions of the Kronobat SD-40.0B battery?
Dimensions (length × width × height) are 175×175×190 mm — also written as 175x175x190 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.
Will the Kronobat SD-40.0B 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-40.0B typically fits a wide range of European vehicles thanks to its standard DIN case format.
Which batteries are equivalent to the Kronobat SD-40.0B?
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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