PROTECTION ---The smart battery monitor with fully colsed protective shell, dustproof ,IPX7 Waterproof ,It can be used for indoor and outdoor. input reverse connection protection. APPLICABLE BATTERY --- The digital battery monitor is suitable for 7-100V (12v 24v 36v 48v 60v 72v 84v) Ternary lithium battery, lead-acid,AGM battery, LiFePO4 battery.