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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 | £7.99 | 3 to 5 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £7.99 | 5 to 7 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £7.99 | 7 to 10 working days |
Product Number: S5AX3
Variations
Auxiliary battery systems in modern vehicles – particularly those equipped with start-stop technology, advanced infotainment, and multiple electronic control units – place demands that a standard flooded battery cannot reliably meet. The Bosch S5 AX3 Auxiliary AGM Battery addresses this requirement directly, providing a dedicated secondary power source designed to stabilise voltage and support ancillary electrical loads independently of the main cranking battery.
Manufactured using Absorbent Glass Mat (AGM) construction, the S5 AX3 employs a sealed, recombinant cell design in which electrolyte is suspended within a fibreglass mat separator. This eliminates acid stratification, permits installation in non-upright orientations where vehicle packaging demands it, and delivers a lower internal resistance than conventional flooded cells – resulting in faster charge acceptance and more consistent discharge behaviour across a range of operating temperatures.
The S5 AX3 carries a 12 V nominal voltage and an 11 Ah rated capacity (C20), with a Cold Cranking Amp rating of 180 A (EN). Physical dimensions are 150 mm (L) × 87 mm (W) × 130 mm (H including terminal). Terminal configuration and polarity should be confirmed against the product label prior to installation. No direct cross-reference part numbers are currently listed for this SKU.
The S5 AX3 is one of four capacities in the Bosch S5A auxiliary AGM range. Related variants include the S5AX1, S5AX2, and S5AX4, offering alternative Ah ratings to suit different auxiliary load requirements." This battery is supplied with a 1 Year Warranty covering manufacturing defects under normal operating conditions. "Standard delivery: 1–3 working days within UK mainland. 30-day returns.
Key Feature:Engineered for modern passenger vehicles, providing reliable starting power, voltage stability, and long-term durability to support daily commuting and standard automotive electrical demands.
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) | 11Ah |
| Cold Cranking Amps (EN) | 180A |
| L × W × H | 150mm × 87mm × 130mm |
| Warranty period | 1 Year |
| Weight (Kg) | 4.25 |
| Capacity AH (C5) | |
| Capacity AH (C10) | |
| Capacity AH (C100) | |
| Marine Cranking Amps (MCA) | |
| Watt-Hours (WH) | |
| Length (mm) | 150 |
| Width (mm) | 87 |
| Height Inc. Terminal (mm) | 130 |
| Terminal Placement | |
| Terminal Type | |
| Hold Down | |
| Case Size | |
| ETN Number | 0092S5AX30 |
| TTNR | 0092S5AX30 |
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Delivery Estimate: 3 to 5 working days
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| Technical Specification | ||||
|---|---|---|---|---|
| PRODUCT NUMBER | EK091 | EK111 | EK131 | AUX14 |
| Voltage | 12 | 12 | 12 | 12 |
| Capacity (AH) | 9 | 11 | 13 | 13 |
| Cold Cranking Amps (EN1) | 120 | 150 | 200 | 200 |
| Terminal Type | Y4 | |||
| Length | 150 | 150 | 150 | 150 |
| Width | 90 | 90 | 90 | 87 |
| Height | 105 | 130 | 145 | 146 |
| Show More | ||||
A. The Bosch S5AX3 is a 12 V auxiliary AGM battery with a rated capacity of 11 Ah (C20) and a Cold Cranking Amp (CCA) rating of 180 A measured to the EN standard.
A. The S5AX3 measures 150 mm in length, 87 mm in width, and 130 mm in height inclusive of the terminal. The battery weighs 4.25 kg.
A. Terminal polarity is not fixed by a single standard configuration for this SKU. Polarity must be confirmed by inspecting the label on the physical product before installation to avoid incorrect connection.
A. The AGM technology used in the S5AX3 is inherently suited to the repeated charge and discharge cycles associated with start-stop systems. However, compatibility with a specific vehicle application should be verified against the vehicle manufacturer's specification and confirmed against the product label.
A. The Bosch OE part number for this battery is 0092S5AX30.
A. Yes. The S5A auxiliary AGM range includes the S5AX1, S5AX2, S5AX3, and S5AX4, each offering a different Ah rating. The appropriate variant should be selected based on the auxiliary load specification of the target vehicle.
A. The Bosch S5AX3 is supplied with a 1 Year Warranty covering manufacturing defects under normal operating and installation conditions.
A. No formal IP ingress protection rating is specified for the S5AX3. As an AGM battery it is sealed and does not vent free acid, which permits greater installation flexibility than flooded batteries. However, the permissible installation orientation for any specific vehicle application should be confirmed against the vehicle manufacturer's guidelines.
A. Orders placed for the S5AX3 are dispatched via standard parcel carrier and delivered within 1–3 working days to UK mainland addresses. A 30-day returns policy applies to all orders.
A. The S5AX3 uses Absorbent Glass Mat (AGM) construction, in which electrolyte is held within a fibreglass separator rather than free-flooding the cell. This sealed, maintenance-free design offers lower internal resistance, improved charge acceptance, and greater tolerance to deep cycling compared with conventional flooded batteries — properties that are important in auxiliary battery roles where the battery must respond quickly to varying electrical demands.
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