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Bosch S4E42 EFB Stop / Start Car Battery 12V 85Ah 800CCA Type 249
Bosch S4E42 EFB 12V 85Ah 800CCA Type 249 Car Battery
The Bosch S4E42 is a high power car battery that is suitable for start stop vehicles. The battery features EFB technology which stands for Enhanced Flooded Battery. The battery will provide a reliable supply of energy for vehicles with start/stop systems or increases electrical consumers like heated seats and parking sensors.
Key features of the Bosch S4E42 EFB Start Stop battery:
EFB Technology - Suitable for Start/Stop Vehicles
Longer Service Life and doubled deep-cycle resistance compared to conventional batteries
Excellent charge acceptance and high short distance stability
Maintenance free, leak proof and vibration-resistant
Excellent starting power: optimized current flow of patented PowerFrame grid
High Performance: 85A/h - 800A
Brand:
Bosch
UK Part Code:
249
Voltage:
12
Capacity AH (C20):
95
CCA:
800
Technology:
EFB
Start-Stop:
Yes
Length (mm):
306
Width (mm):
173
Height (mm inc. terminals):
222
Warranty:
4 Years
Terminal:
A-Terminal
Layout:
0
Holddown:
B13
Size (L x W x H):
306 x 173 x 222
Information according to manufacturer. Subject to errors and changes.
CUSTOMER REVIEWS
On:26 Jan 2026
Arrived promptly from when initial order placed. Thoughtfully packaged to ensure secure delivery
Will consider any future purchases, without hesitation
On:9 Jan 2026
Good product, great price
Great product, excellent price. A pity FEDEX delivery is useless took them 7 day, and accused me of being out when stayed in all day waiting then blamed the conditions, yet every other delivery company came up the street that day
On:19 Nov 2025
Easy to use and informative website, The battery was good value and delivered before the expected date. .
Easy to deal with company and good value for money.
Customer evaluation for "Bosch S4E42 EFB Stop / Start Car Battery 12V 85Ah 800CCA Type 249"
From:Terry BrookesOn:26 Jan 2026
Arrived promptly from when initial order placed. Thoughtfully packaged to ensure secure delivery
Will consider any future purchases, without hesitation
From:Richard On:9 Jan 2026
Good product, great price
Great product, excellent price. A pity FEDEX delivery is useless took them 7 day, and accused me of being out when stayed in all day waiting then blamed the conditions, yet every other delivery company came up the street that day
From:Philip WebbOn:19 Nov 2025
Easy to use and informative website, The battery was good value and delivered before the expected date. .
Easy to deal with company and good value for money.
From:WitOn:12 Aug 2025
All great
Good battery so far. Great quick delivery. Fits 2016 Mazda 3 diesel perfectly. And the price is competitive. Thanks
The most important questions about high-quality replacment batteries for cars
Find the right battery here
Car Batteries
Which starter battery is right for my car?
The easiest way is to use the data of your old battery. Make a note of the capacity, voltage, base strip and circuit. For 100% accuracy you should measure the size (length, width and height) of the old starter battery. With this data you can easily find the right starter battery.
You don't know what to do? Then send us pictures of all sides of the old battery. We will be happy to you find the right starter battery.
What is the difference between the battery technologies?
● Acid: Inside the battery is liquid acid which should be refilled at regular intervals - this is usually the cheapest price variant. Most of our autmotive batteries are sealed maintenance free ● AGM (Absorbent Glass Mat Technology): In AGM batteries, the electrolyte (acid) is completely bound in a glass fibre fleece, so the batteries are leak proof - medium price variant. ● GEL: The acid in these batteries is thickened to a gel. Like the AGM battery, they are leak proof and extremely durable - high-quality price variant.
What is the delivery time of a starter battery?
Our starter batteries are packed and dispatched directly after your order by our automated packing line. The delivery time is between 1-3 days. If you need further information about your order, simply contact our service team. Or use the shipment tracking.
Can I return my old battery?
You can return the old battery in our shop. Alternatively, you can dispose of the used battery at a recycling centre or scrap dealer. Important: Ensure the respective company provides confirmation about the disposal of the old batteries. Then send the confirmation via our refund form.
How can I recharge the battery?
The starter battery is automatically recharged during a longer journey by car. If you want to recharge the car battery for a longer period of time, use a charger.
How long does it take to fully charge my starter battery?
The starter battery is recharged by the alternator while driving. The starter battery cannot usually be charged enough during frequent short distances. In order for your new starter battery to last longer, you should fully charge it by driving for longer journeys or using an optional charger.
How do I know the correct connection (terminal arrangement)?
The easiest way is to use the data from your old battery. Or refer to your car owner's manual.
What voltage does my car need?
Almost all cars use 12V voltage. Trucks usually have 24 Volt voltage systems. If you are unsure, check your old battery or your car's manual.
What capacity do I need?
To choose the capacity you should use your old battery as a template. If you are unsure, check your used battery or your car manual.
How do I know if I have Start-Stop?
Many new cars switch off the engine when stationary. When choosing the right car battery, please make sure that your car also has an automatic Start-Stop function. For further information, please refer to your vehicle manual.
What is the base hold down of the battery in my car?
Most cars use the B13 baseboard. Check your old starter battery to see which hold down you need. Or take a look at your car's manual.
Can I also ship to locker courier service?
No, our starter batteries cannot be sent to locker courier service.
I need help choosing the right battery!
Use our free phone line or our contact form. We will be happy to help you choose the right battery.
