[Chocaholic]

Rather than install a second battery and a Perko switch in our boat, I thought it might be reasonable to simply carry a portable jump starter. On occasion we will drop anchor, shut off the boat but leave the music/lights on. Have never done so long enough to kill a battery, but with only one, I could see it happening. Alcohol is usually involved, but I digress.

I know nothing about these things. Do they require frequent charging? Anything to know beyond that? Looks like most on Amazon have good reviews...any specific recommendations?