Is there a way to charge laptop batteries when not connected to your laptop?

okey, if you want to charge your laptop battery, i suggest you charge it from your laptop adapter. so , you can see that some charger for mobile phone, shaver, ect. may has the same output volt to your laptop battery volt, but ,if the conect between the charger and batter is not inseparably close, the battery may discharge at the same time. this may decrease the life of your laptop if you don't want to work with the battery, keep the adapter connect with the laptop. or if the laptop battery is poor, change a new one.