Spectra S1 or S2?

Jessica

So, my insurance is going to fully cover the S2 but I'll have to pay $95 for the S1. I like the idea of battery back up but is it worth it? I will be working full time once the baby is 12 weeks old. I work in a school so I'll have 2 fifteen minute breaks and a 30 minute lunch. There are a couple of rooms I should be able to pump in. Just want to see if there are times I'd need the battery that I'm not thinking of. Thanks ladies!!