I still remember the little buzz,tish,buzz,tish,buzz,tish of my wife's pump, daughter refused to latch so she pumped for 6 months but her supply dried up when she got sick then and no amount of pumping could get it going again.
We kept on living normally, had a portable pump that ran on 4 AA's and I carried a spare pack of Eneloops and a MAHA C401FS charger. She would be pumping while I was driving and we had the other 4 batteries in the c401fs plugged into a 12v port on the dash.