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The Battery Tender Jump N Start is a 1500 peak-amp lithium jump starter aimed at drivers with big engines. It handles gas engines up to V8 and diesels up to 7.0L, and its 12,000mAh battery doubles as a power bank that recharges phones and tablets several times. That puts it well above 600- and 800-amp pocket units in cranking power and reserve, at the cost of more bulk and weight. It suits truck, RV and diesel owners and anyone starting a vehicle in freezing weather more than someone who only needs to top up a small car.
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The Jump N Start 1500 Amp Lithium Jump Starter is a portable jump starter for 12V vehicles. It delivers 1500 peak amps and has a 12,000mAh lithium battery pack. It starts gas engines up to V8 and diesel engines up to 7.0L, and it can start a car without jumper cables or a second vehicle.
To jump start, connect the red clamp to the positive (+) terminal of the dead battery. Connect the black clamp to a ground point or the negative (−) terminal. Spark-proof connection technology confirms polarity before any current flows. Crank for up to 5 seconds per attempt, with 30 seconds between attempts. Once the engine is running, disconnect the clamps.
The battery also works as a USB power bank for phones, tablets and USB-C devices. The unit is compact enough to store under a seat, in a trunk or in a center console. Lithium technology keeps peak amp output consistent in cold weather better than lead-acid jump boxes.
