How to Fix a Portable Jump Starter

Today I fixed an old portable jump starter. The battery in the jumper pack would no longer hold a decent charge. It was also missing the air compressor's hose. I fixed both of these problems in the video and gave some maintenance tips to help your new jumper last longer.
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The battery used in this video to replace the original:
Mighty Max Battery 12V 18AH
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Lock-on Air Chuck:
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1/4" Vacuum Hose:
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Knipex Ear Hose Clamp Pliers:
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Ear Hose Clamps:
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