... Certifications:ISO9001, UL, FCC,RoHS, E-MARK Battery chargerCharger Specifications: ModelLC-2217Output36V1.9A For Battery 6.7AH to 20AH Input Voltage 100 ... input exceeds 16 ±1VDC. 3. Low voltage Alarm: Audible when battery dischargesto 10.5± 0.5VDC. 4. Under voltage protection: Automatically ... when housing temperature exceeds70 0C 3-stage charging 36V SLA battery charger for electric bike