Although it generally lasts longer than warranty duration, the old battery at some point goes stale, and each new battery expenses around 3000$. Do this for a couple of mins, after that open up the covers as you did in the past and unload the contents into a plastic bucket. https://hybridbatteryreconditioni01099.blogpostie.com/56700739/h1-battery-reconditioning-epsom-salt-what-you-need-to-know-h1