It seems the time has come to replace my Scamp Battery. It's been a little low lately and just now, mid-trip, it started beeping at me and dropping consistently. I was wondering about an upgrade to a Lithium battery.

was wondering what you'd recommend and if it would be plug&play?

Until, I'm going to hook up a generator and try to get some charge on it to get me through the next couple of days. If I do this, does the DC switch need to be on to get the charge or will it charge it either way? 
 

Thanks!