Forgetful Me

I have to set an alarm in my mobile phone to remind me again. I have to buy the cordless phone battery for office Panasonic PP802 cordless phone. I been telling my colleague I'll buy the battery last 2 weeks, but I haven't get it until today. I'm just too forgetful, I always forget it when step out office. Lucky that the old battery still working, but I think it can't last longer already. So I got to make sure myself buy the battery in these 2 days, otherwise office might no phone to use. haha