hi im trying to build a battery charger for my 9 volt NimH battery and fortunately I found a spec sheet of MAX712 which I think can apply to my project. but the problem is I found some confusing parts on the schematic of the specsheet. "the BATTERY part" I have attach the schematic diagram and pointing out the confusing part (im thinking that I would place a battery on that part)..can someone explain me what is this part. thank you so much people...