Otherwise, make sure you've got enough distilled water in it, that that you keep the terminals & cable clamps free of corrosion.
FC
Battery maintenance 101 right there. Amazing how many don't know it.
That said some of the newer vehicles seem to need more juice at start up for the all the electronic chit. I've replaced the battery in my wife's car twice in the last 5-6 years. It won't even spin over when the battery 'dies'. Get some horsechit message on the screen....
Curious. Does you wife make a lot of short trips? If so, the alternator may not be running long enough to restore charge. Other thought is if it sits a lot in between drives, the same thing can happen. Charge due to leakage drops low, then the drive isn't enough to fully recharge.
