Power meter or console for a conversion kit

[grasshopper]

I'm buying a 48V, 10 Ah battery for a rear-hub motor for my bike. No console or display comes with it. Are there any that I could easily connect to it, especially to check the remaining charge on the battery?

 

[Shea N Encinitas]

Cycle Analyst:

http://electricbikereview.com/community/threads/mid-drive-8fun.786/