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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £19.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £19.95 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £5.99 | 3 to 5 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £5.99 | 5 to 7 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £5.99 | 7 to 10 working days |
Start-stop systems demand more from a battery than conventional vehicles require. Each engine restart places additional charge-acceptance and cycling stress on the cell, accelerating degradation in standard flooded designs. The Bosch S4E EFB 12V 85Ah Type 249 battery (SKU: S4E42) is engineered specifically to meet these demands, providing reliable cranking and sustained charge recovery across extended urban driving cycles.
Bosch EFB (Enhanced Flooded Battery) technology utilises a polyester scrim integrated into the positive plate structure. This reinforcement increases active material adhesion, reducing plate degradation under the frequent partial-state-of-charge conditions typical of start-stop operation. The result is significantly improved cycle life and charge acceptance compared to conventional flooded batteries, while maintaining the robustness expected of a Bosch product.
The S4E42 delivers 800A Cold Cranking Amps (EN) at 12V with an 85Ah capacity (C20), housed in a 306mm × 173mm – 225mm case. Terminal placement is Type 0 (positive right), with a Type 1 terminal post and B01 hold-down configuration. This battery is the direct replacement for Type 249 applications and cross-references to 249EFB. Weight is 21.69kg.
This product is part of the Bosch S4E EFB range. Related variants available on site include S4E08, S4E10, S4E11, S4E13, S4E41, LE002, L4034, and L4027, covering a broad spread of vehicle fitments." The S4E42 is supplied with a 3-year warranty. "Standard delivery: 1–3 working days within UK mainland. 30-day returns.
The Bosch S4 battery with EFB technology is tailored to the requirements of passenger cars with start/stop systems. It ensures a safe start - even when many electrical consumers in the vehicle are in operation. EFB technology (Enhanced Flooded Battery): Positive plate coated with polyester scrim provides additional support for the active material and high cycle stability. Longer life and twice the cycle life of conventional starter batteries. Safe starting even at extreme temperatures and high number of electrical loads. Particularly good charge absorption and high short-distance resistance. Absolutely maintenance-free and leak-proof.
Key Feature:Suited for passenger cars, balancing reliable cold-cranking performance with long service life for daily use.
Uses:PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specialising in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalogue of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.
Fitment Warning:You must check your current battery against the specifications of this battery before ordering to ensure that this is the correct battery for your vehicle. Check battery technology, dimensions, terminal type, polarity, capacity (AH) and cranking performance (CCA). We cannot guarantee correct fitment under any circumstances.
| Brand | Bosch |
|---|---|
| Voltage | 12V |
| Capacity AH (C20) | 85Ah |
| Cold Cranking Amps (EN) | 800A |
| L × W × H | 306mm × 173mm × 225mm |
| Warranty period | 3 Years |
| Weight (Kg) | 21.69 |
| Capacity AH (C5) | |
| Capacity AH (C10) | |
| Capacity AH (C100) | |
| Marine Cranking Amps (MCA) | |
| Watt-Hours (WH) | |
| Length (mm) | 306 |
| Width (mm) | 173 |
| Height Inc. Terminal (mm) | 225 |
| Terminal Placement | 0 |
| Terminal Type | 1 |
| Hold Down | B01 |
| Case Size | |
| ETN Number | 585501080 |
| TTNR | 0092S4E420 |
| Engine Parts | Product Number | Product Name | Recommended Units | Product Price |
|---|
Expert Guidelines for Preserving Your Heavy Equipment Battery Heavy machinery, including forklifts, bulldozers, and excavators, relies on robust batteries to minimize downtime and maximize operational availability. These batteries must endure even more challenging conditions than typical automotive batteries. Moreover,...
Standard Delivery: £5.99
Delivery Estimate: 3 to 5 working days
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| Technical Specification | |||||
|---|---|---|---|---|---|
| PRODUCT NUMBER | YBX7335 | YBX7115 | YBX7110 | YBX7096 | YBX7031 |
| Voltage | 12 | 12 | 12 | 12 | 12 |
| Capacity (AH) | 80 | 85 | 75 | 75 | 72 |
| Hold Down | N | B3 | B3 | B3 | N |
| Cold Cranking Amps (EN1) | 780 | 760 | 730 | 700 | 720 |
| Terminal Type | T1 | T1 | T1 | T1 | T1 |
| Cell Layout | 0 | 0 | 0 | 0 | 1 |
| Length | 305 | 317 | 317 | 278 | 260 |
| Width | 173 | 175 | 175 | 175 | 173 |
| Height | 225 | 190 | 175 | 190 | 225 |
| Show More | |||||
A. The S4E42 is designed for passenger cars equipped with start-stop systems. It is specifically engineered to handle the higher cycling demands and frequent partial-state-of-charge conditions that start-stop operation imposes on a battery.
A. EFB stands for Enhanced Flooded Battery. Bosch EFB technology incorporates a polyester scrim within the positive plate assembly to improve active material retention. This delivers superior cycle life and charge acceptance compared to standard flooded batteries, making it well-suited to the repeated charge and discharge cycles generated by start-stop systems.
A. The Bosch S4E42 is rated at 800A Cold Cranking Amps measured to the EN standard. This indicates the battery's ability to deliver reliable engine starting performance in cold conditions.
A. The S4E42 measures 306mm in length, 173mm in width, and 225mm in height including the terminal. Please verify these dimensions against your vehicle's battery tray before ordering.
A. The S4E42 uses a Type 1 terminal post. Polarity is Type 0, meaning the positive terminal is positioned on the right-hand side when viewed from the front of the battery. The hold-down configuration is B01.
A. The S4E42 is the direct equivalent for Type 249 applications and carries the cross-reference code 249EFB. It also carries the Bosch part number 585 501 080.
A. The S4E42 has a capacity of 85Ah measured at the C20 rate. This reflects the total energy the battery can deliver under standard test conditions.
A. The Bosch S4E42 weighs 21.69kg. This should be considered when planning installation, particularly in vehicles with restricted battery access.
A. The S4E42 is supplied with a 3-year warranty, providing assurance of reliable performance across the warranty period.
A. Standard delivery is 1–3 working days within UK mainland. A 30-day returns policy applies to this product.
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