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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 |
Heavy commercial vehicles place exceptional electrical demands on starting batteries, requiring robust cold-cranking performance across a wide range of operating temperatures and load cycles. The Powermax PM638 is a premium lead-acid commercial vehicle battery engineered specifically to meet these demands, delivering consistent and dependable starting performance in trucks, buses, agricultural plant, and other high-drain applications.
Powermax batteries are manufactured to the highest specification, combining proven lead-acid chemistry with precision plate construction and high-density active material to maximise both cranking output and service life. The PM638 delivers 900A Cold Cranking Amps (EN) from a 143Ah (C20) capacity at 12V, providing the sustained cranking power required by large diesel and petrol commercial engines in demanding duty cycles.
The PM638 is supplied in a MAC132 case measuring 510mm × 174mm – 205mm (L × W × H) with a Type 1 terminal configuration, standard polarity (positive left, code 0), and B00 hold-down arrangement. It weighs 33.8kg. This battery cross-references directly to the Type 638 fitment and is compatible with applications requiring that group size. Start-stop compatibility has not been confirmed; refer to the product label before fitting to micro-hybrid systems.
The PM638 is part of the Powermax Commercial Battery range (Product Group 2821). Related variants within the Powermax commercial range include the PM620, PM622, PM623, PM624, PM625, PM629, PM629UR, PM632, PM633, and PM655, covering a broad spectrum of commercial fitments.
This battery is supported by a 2-year warranty against manufacturing defects, providing commercial operators with assurance of product quality and performance reliability.
Delivery: pallet shipment, typically 3–5 working days within UK mainland. Contact PartsForMachines for delivery quote. 30-day returns.
Quality, durability and performance sum up the Powermax range of batteries. Powermax batteries are built to the very highest specification to cope with today’s automotive electrical demands. The Powermax automotive range has a battery to suit every application whilst providing premium quality and value. That’s why people trust the Powermax battery brand to give them the performance they need no matter how harsh the conditions.
Key Feature:Suited for passenger vehicles, 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 | Powermax Battery |
|---|---|
| Voltage | 12V |
| Capacity AH (C20) | 143Ah |
| Cold Cranking Amps (EN) | 900A |
| L × W × H | 510mm × 174mm × 205mm |
| Warranty period | 2 Years |
| Weight (Kg) | 33.8 |
| Capacity AH (C5) | |
| Capacity AH (C10) | |
| Capacity AH (C100) | |
| Marine Cranking Amps (MCA) | |
| Watt-Hours (WH) | |
| Length (mm) | 510 |
| Width (mm) | 174 |
| Height Inc. Terminal (mm) | 205 |
| Terminal Placement | 0 |
| Terminal Type | 1 |
| Hold Down | B00 |
| Case Size | MAC132 |
| 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 | YBX1612 | YBX1630 | YBX1655 | YBX1657 |
| Voltage | 12 | 12 | 12 | 12 |
| Capacity (AH) | 143 | 143 | 126 | 142 |
| Hold Down | N | B3 | N | N |
| Cold Cranking Amps (EN1) | 900 | 900 | 750 | 850 |
| Terminal Type | T1 | T1 | T1 | T1 |
| Cell Layout | 3 | 3 | 0 | 0 |
| Length | 513 | 513 | 347 | 345 |
| Width | 189 | 189 | 174 | 175 |
| Height | 223 | 223 | 285 | 275 |
| Show More | ||||
A. The Powermax PM638 is rated at 900A Cold Cranking Amps (CCA) measured to the EN standard, making it well suited to large diesel and petrol commercial vehicle engines that require high cranking current at low temperatures.
A. The PM638 has a capacity of 143Ah measured at the C20 rate at 12V. This provides ample reserve capacity to support the electrical ancillaries and starting requirements of heavy commercial vehicles.
A. The Powermax PM638 measures 510mm in length, 174mm in width, and 205mm in height including terminals. It is supplied in a MAC132 case and weighs 33.8kg. Always verify these dimensions against your battery tray and hold-down arrangement before ordering.
A. The PM638 uses a Type 1 terminal configuration with standard polarity, designated polarity code 0 (positive terminal on the left when viewed from the front). Please confirm the terminal layout of your existing battery before fitting.
A. The PM638 uses a B00 hold-down arrangement. Ensure that your vehicle's battery securing system is compatible with this specification before installation.
A. Start-stop compatibility for the PM638 has not been confirmed by the manufacturer. Refer to the product label for guidance and consult your vehicle manufacturer's specification before fitting this battery to any micro-hybrid or start-stop system.
A. The PM638 is a commercial vehicle battery designed for trucks, buses, agricultural machinery, construction plant, and other heavy-duty applications that require a high-output 12V starting battery in the Type 638 group size.
A. The Powermax PM638 cross-references directly to the Type 638 battery fitment. If your vehicle or equipment currently uses a Type 638 battery, the PM638 is the corresponding Powermax replacement, subject to confirmation of physical dimensions and terminal layout.
A. The PM638 is covered by a 2-year warranty against manufacturing defects. This warranty applies from the date of purchase and reflects Powermax's commitment to quality and reliability in commercial battery applications.
A. The PM638 is dispatched on a pallet due to its size and weight of 33.8kg. Delivery to UK mainland addresses typically takes 3–5 working days. Contact PartsForMachines directly for a delivery quote, including any non-mainland locations. A 30-day returns policy applies.
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