A better solution if you want

A better solution if you want to charge 2 batteries at the same time. A must if you are a heavy user:

http://www.bhphotovideo.com/c/product/836380-REG/watson_d_1508_duo_lcd_charger_for.html

I would also suggest the larger capacity BP-828 battery which is comaptible with the XA20

http://www.bhphotovideo.com/c/product/963146-REG/canon_8598b002_bp_828_lithium_ion_battery_pack.html