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Match the booster's peak current rating to the engine size and battery the booster is starting. For petrol cars and light vans (up to 2.5L), 400-700 amps peak is sufficient. For larger petrol and small diesel engines (2.5-4L), 700-1,200 amps peak is the trade standard. For light commercial diesels and 4×4s (4-6L), 1,500-2,000 amps. For HGVs, agricultural tractors, and plant equipment (6L+), 2,500-4,000+ amp boosters with 12V/24V capability are required.

Lithium-ion boosters are lighter (sometimes 1/3 the weight of an equivalent lead-acid booster), faster to charge, hold their charge longer between uses, and don't suffer the slow-decline problem of lead-acid packs. They're more expensive but increasingly the standard for new boosters. Lead-acid boosters are heavier and slower to charge but generally have higher peak boost currents. For mobile and roadside use, lithium-ion is typically preferred; for fixed-bay workshop use, lead-acid is still common.

All booster batteries (lead-acid and lithium-ion) self-discharge over time. Lead-acid: charge fully every 1-3 months when not in regular use. Lithium-ion: charge fully every 3-6 months when stored. After every use, recharge before storage to avoid leaving the booster in a partially-discharged state for extended periods (which damages capacity over time). Most modern boosters have a charge-status indicator on the front panel.

Yes. Replacement clamps (sized to the original cable cross-section), replacement cranking leads, mains-charger units, and replacement integrated batteries (where the design allows user-serviceable battery replacement) are available for the majority of Draper, SIP, and Sealey boosters. Search by the booster model code, or WhatsApp 07754288583 with the code and a clear photograph for cross-reference.

Every product is backed by our Fit Guarantee. If a part is incompatible with your machine, you can return it hassle-free. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will arrange collection. For other returns, email us first to obtain a Return Merchandise Number before sending. Returns are accepted within 30 days of purchase, in original packaging, on UK orders. A restocking fee may apply on returns where the buyer has changed their mind. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

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Booster

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Within Chargers & Boosters, Booster covers the portable battery-boost packs used to start vehicles with depleted, dead, or insufficiently-charged batteries — also known as jump-starters, jump-packs, and emergency-start packs. Boosters are essential workshop, fleet-yard, roadside-assistance, and breakdown-recovery kit, providing a compact, rechargeable cranking-power source independent of mains power and other vehicles.

Parts for Machines supplies boosters across the trade and professional ranges, with rated peak boost currents typically running from 400 amps (light-vehicle car-and-van use) up to 4,000 amps and above (heavy commercial-vehicle, agricultural, and plant boosting). Battery technologies range from traditional sealed lead-acid packs (heavier but high cranking-current capacity) to lithium-ion packs (lighter, faster-charging, and increasingly the trade default for new boosters).

We are an authorised distributor and seller of Draper, SIP, and Sealey across the booster range. Sealey covers trade-grade lead-acid and lithium-ion boosters across the workshop and fleet ranges. SIP and Draper extend the line with additional capacity and price-point variants.

Product pages list the peak boost current, the cranking current (the sustained current the booster delivers during a typical 5-10 second crank), the battery technology (lead-acid or lithium-ion), the operating voltage (12V; 24V; or dual-voltage 12V/24V switchable), the integral battery capacity (in Ah), the included accessories (cranking leads, mains charger, optional in-vehicle 12V charging socket, integrated air compressor or work light on combination units), and the weight. Always observe the manufacturer's connection sequence: red clamp to positive battery terminal first, black clamp to a clean engine-block ground (not the negative battery terminal). Disconnect in reverse order. Trade pricing on multi-unit and fleet orders is available; contact the team via WhatsApp 07754288583.

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FAQs

Match the booster's peak current rating to the engine size and battery the booster is starting. For petrol cars and light vans (up to 2.5L), 400-700 amps peak is sufficient. For larger petrol and small diesel engines (2.5-4L), 700-1,200 amps peak is the trade standard. For light commercial diesels and 4×4s (4-6L), 1,500-2,000 amps. For HGVs, agricultural tractors, and plant equipment (6L+), 2,500-4,000+ amp boosters with 12V/24V capability are required.

Lithium-ion boosters are lighter (sometimes 1/3 the weight of an equivalent lead-acid booster), faster to charge, hold their charge longer between uses, and don't suffer the slow-decline problem of lead-acid packs. They're more expensive but increasingly the standard for new boosters. Lead-acid boosters are heavier and slower to charge but generally have higher peak boost currents. For mobile and roadside use, lithium-ion is typically preferred; for fixed-bay workshop use, lead-acid is still common.

All booster batteries (lead-acid and lithium-ion) self-discharge over time. Lead-acid: charge fully every 1-3 months when not in regular use. Lithium-ion: charge fully every 3-6 months when stored. After every use, recharge before storage to avoid leaving the booster in a partially-discharged state for extended periods (which damages capacity over time). Most modern boosters have a charge-status indicator on the front panel.

Yes. Replacement clamps (sized to the original cable cross-section), replacement cranking leads, mains-charger units, and replacement integrated batteries (where the design allows user-serviceable battery replacement) are available for the majority of Draper, SIP, and Sealey boosters. Search by the booster model code, or WhatsApp 07754288583 with the code and a clear photograph for cross-reference.

Every product is backed by our Fit Guarantee. If a part is incompatible with your machine, you can return it hassle-free. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will arrange collection. For other returns, email us first to obtain a Return Merchandise Number before sending. Returns are accepted within 30 days of purchase, in original packaging, on UK orders. A restocking fee may apply on returns where the buyer has changed their mind. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

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