1. Most portable jump starters come with some juice in the battery when it’s delivered, but charge it fully before you need it. Usually, it’s a common household plug and a port on the side of the device. 2. Some booster packs have hardwired cables while others have quick-attach options. Determine which connectors you will need and get your jump starter set up. 3. Connect your jump starter to the battery directly, if you can. Clamp the red cable to the positive (+) post on the battery and the black cable to the negative (-) post. Often, you’ll get an indicator light up or a tone if you’ve connected it wrong.
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