Absolute must have if you pump and don’t want to spend a ton of money on cordless pumps. The battery last for days. Charging to a full charge does take a long time though. Overnight isn’t long enough for a full charge. Suction power does go down a bit once the battery is down to about 3 lights on. But I just go up on the suction on the pump. It’s literally a game changer for an exclusive pumper. Works great with my Spectra 2
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