I purchased a new battery for my 2009 Macbook Pro Unibody. Going to replace it tomorrow. Before I do however, I'd like to know how to charge it the first time. Should I: Install it, turn on the device, let the battery die fully, then recharge it fully and let it die again? Or perhaps I should install it, charge it fully, let it die entirely and charge it up again? Or something else? Does it even matter?