Help Batterie charging questions

[omranot]

I have some question about batterie charging:
1- is it safe to charge batterie via laptop
2- is it safe to charge batterie overnight.
3- I need recommendations to boost my batterie life (long term and short term).
Thanks.
Note: My phone is sony ericson xperia arc S

 

[siva939]

1.safe charging via laptop.
2.Dont charge batterie overnight.
3.switch off and put charging..