HOW TO: USED & Cheap Valence U27-12XP Lithium batteries. Repair, Communication & Software issues - YouTube
Low Grade Valence Lithium Battery U27-12XP | 12V 138AH 1.766 kWh (AS I – Battery Clearing House
Valence XP LiFePO4 battery user group | Two 138ah in parallel, were fully charged spend 8 days off grid with no issue using around 70ah daily and voltage being in the 13 ish | Facebook