Replace regular car battery with a kinetik battery or no?

I just got a kinetik battery and it's a hc-1400. when I test it with my multimeter it only shows 6 volts. I know that regular car batteries have 12V. can I use this battery on my car as a replacement? or not? and is there anything I need to know about changing the battery so that I dont mess something... show more I just got a kinetik battery and it's a hc-1400. when I test it with my multimeter it only shows 6 volts. I know that regular car batteries have 12V. can I use this battery on my car as a replacement? or not? and is there anything I need to know about changing the battery so that I dont mess something up?


This is a used battery, maybe it needs to be charged back up to 12v?
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