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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: AGM U1
Variations
Tesla Model S vehicles rely on a dedicated 12V auxiliary battery to power essential low-voltage systems independently of the high-voltage drive battery. Without a healthy auxiliary battery, critical functions including door locks, lighting, heating, and the central touchscreen display may fail to operate correctly. This AGM U1 auxiliary battery is purpose-built to meet the specific demands of the Tesla Model S (2016–2019) 12V low-voltage electrical architecture.
Constructed using Absorbent Glass Mat (AGM) technology, this battery delivers stable, consistent power delivery with superior resistance to deep cycling and vibration compared to conventional flooded lead-acid units. AGM construction eliminates free electrolyte, reduces gassing, and supports the sustained low-current draw typical of always-on vehicle management systems.
This battery is engineered to fit the Tesla Model S auxiliary battery position directly. Dimensions are 197mm × 131mm – 186mm (L × W × H) with a U01 case type, Terminal Type 1, Hold-Down B00, and Standard Polarity (0). It carries a rated capacity of 30Ah (C20) at 12V and weighs 12.1kg. Cross-reference: AGM U1-450LS. Start-stop compatibility is supported by the AGM technology; verify against the product label prior to fitment." No variants are currently available for this product. 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.
Tesla 12V auxiliary battery Tesla vehicles have a 12V battery to power essential low-voltage systems such as lights, door locks, heating and the touchscreen display. This setup is safer and ensures these systems remain operational even if the main battery is depleted. Additionally, it allows Tesla to use standardised components designed for 12V systems, like those in internal combustion engine cars.
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 | Hankook |
|---|---|
| Voltage | 12V |
| Capacity AH (C20) | 30Ah |
| Cold Cranking Amps (EN) | |
| L × W × H | 197mm × 131mm × 186mm |
| Warranty period | 1 Year |
| Weight (Kg) | 12.1 |
| Capacity AH (C5) | |
| Capacity AH (C10) | |
| Capacity AH (C100) | |
| Marine Cranking Amps (MCA) | |
| Watt-Hours (WH) | |
| Length (mm) | 197 |
| Width (mm) | 131 |
| Height Inc. Terminal (mm) | 186 |
| Terminal Placement | 0 |
| Terminal Type | 1 |
| Hold Down | B00 |
| Case Size | U01 |
| ETN Number | |
| TTNR |
| 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: £7.99
Delivery Estimate: 3 to 5 working days
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| Technical Specification | ||||
|---|---|---|---|---|
| PRODUCT NUMBER | HJ-S34B20R | AUX1 | ||
| Voltage | 12 | 12 | ||
| Capacity (AH) | 35 | 35 | ||
| Hold Down | N | |||
| Cold Cranking Amps (EN1) | 272 | 520 | ||
| Terminal Type | T3 | 1 | ||
| Cell Layout | 1 | |||
| Length | 197 | 212 | ||
| Width | 129 | 175 | ||
| Height | 227 | 140 | ||
| Show More | ||||
A. This battery is designed for the Tesla Model S produced between 2016 and 2019, where it serves as the 12V auxiliary battery powering low-voltage systems such as lighting, door locks, heating, and the touchscreen display.
A. This battery is rated at 12V with a capacity of 30Ah measured at the C20 rate.
A. The battery measures 197mm in length, 131mm in width, and 186mm in height including the terminal. It has a U01 case type.
A. This battery uses Terminal Type 1 with Standard Polarity (configuration code 0) and a B00 hold-down specification.
A. The AGM technology used in this battery supports start-stop functionality. However, you should verify compatibility against the label on the battery itself prior to installation.
A. Tesla vehicles use a dedicated 12V auxiliary battery alongside the main high-voltage drive battery. This arrangement powers essential low-voltage systems such as lights, door locks, heating, and the touchscreen display independently, ensuring these systems remain operational even when the main battery is isolated.
A. The cross-reference for this battery is AGM U1-450LS.
A. AGM stands for Absorbent Glass Mat. In this construction, the electrolyte is held within glass fibre matting rather than being free liquid, making the battery spill-proof and more resistant to vibration and deep discharge cycles. This is well suited to the continuous low-current demands of a Tesla auxiliary system.
A. This battery is supplied with a 1-year warranty covering manufacturing defects under normal operating conditions.
A. Standard delivery takes 1–3 working days to UK mainland addresses. A 30-day returns policy applies to this product.
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