Hello! I have a HP Probook 4530s and some months ago i got the first message to replace the battery. I replaced it with a new original hp battery and i thought that now that i have 2 batteries i should treat them with care. So I labeled them, and I am using the old one inside the house, when i have it connected to the charger and the new one outdoors. Lately, the old one reached its end, it wont last even 2 mins on its own, the time i need to switch power outlets when i move from my office to the living room and vice versa! I decided to replace some or all of the cells that are inside the old one, having two batteries really helped. My main problem is how to open up the old one. It hasn't any screws so I'm guessing that it has clips. I've seen some guides online and most of them have ruined their battery housing. Is there a way not to ruin it? FYI, the laptop battery code is hp 633805-001. Thanks!