
Sealey SL34S Lithium Jump Starter Power Pack
by Sealey
£303.95from 2 retailers
GTIN05054630443244
EAN5054630443244
MPNSL34S
Prices updated 16 Mar 2026
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Product Description
The Sealey SL34S is a lithium-ion jump starter power pack designed for 12V and 24V vehicles, delivering a peak output of 2500A in a compact, lightweight unit. Weighing just 2.6kg, this portable jump starter is well suited to professional tradespeople, fleet operators, and breakdown technicians who need reliable emergency starting capability on the go. It is capable of starting vehicles up to 350hp and features a force start function that enables boosting of deeply discharged batteries down to 0 volts — a significant advantage when dealing with completely flat batteries in the field. Beyond jump starting, the SL34S doubles as a multi-purpose power bank, equipped with dual USB outputs (5V/1A and 5V/2.4A) to charge phones, tablets, and laptops. A built-in 1W worklight with three settings adds further utility in low-light conditions, making this a versatile addition to any van kit or workshop. The unit is fully protected against reverse charging and overload, and includes a 4-stage LED battery level indicator so you always know the remaining capacity. It is supplied with both a mains charger and a USB charging lead. Features and Benefits: • 2500A peak output for reliable emergency starting of 12V and 24V vehicles up to 350hp • Force start function boosts batteries discharged as low as 0 volts • Dual USB outputs (5V/1A and 5V/2.4A) for charging phones, tablets, and laptops • Integral 1W worklight with three settings for use in low-light conditions • 4-stage LED battery indicator displays remaining charge at a glance • Built-in protection against reverse charging and overload • Compact and lightweight at 2.6kg — ideal for van storage or on-site use • Supplied with mains charger and USB charging lead Specifications: Brand: Sealey Model No: SL34S Voltage: 12/24V Battery: 3.7V 36,400mAh Li-ion Peak Output: 2500A Light: 1W Input: 230V 50Hz 1.5A Output: 29V 2A Cable & Clamp Length: 650mm Nett Weight: 2.6kg
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