Spectra SG Synergy Gold pump review

The Spectra Synergy Gold electric breast pump uses independent adjustability with dual motors allowing moms to adjust each side. While not needed for everyone, but hide who need to pump each breast at different suction levels will love the customization of this pump.

[@user-sz5gh8pb3k]

Thank you so much for the info!
I have a question in regards to choosing a pump. I was about to purchase the unimom hospital grade pump, but my hubby made a great point about maybe a wall charging pump would be better. I'll only be breastfeeding for another few months (my son is almost 10 months old), and then I want to breastfeed again to do it again for our next bubba. My question is, does the rechargeable battery decline if it sits around for a few years? Like a phone battery, it wears out over time. Does that happen with the pump batteries? Would it be better for me to get the spectra gold, where I can plug it into the wall? My baby doesn't latch, so I'm pumping 100% besides the solid feeds, and am currently using wearable pumps. X