Battery monitor won't work properly brand new out of box. Customer service keeps telling me it can not be fixed and refuses to send me a replacement since it was purchased over a year ago (although not put into service until early 2026.) Emails back and forth for almost a month asking for a resolution and ZERO help, only offered 20% off another new unit which is likely also defective. WASTE OF TIME AND MONEY... DO NOT BUY FROM THESE THIEVES!!!