Safe to use in case of battery overflow. Meltec Jump Starter
Battery Type: Li-Polymer Battery Capacity: 9200mAh (34Wh)
Jump start output: DC 12V/400A; Jump start operating time: Within 2 seconds; Jumpstart compatible vehicles: DC 12V, gasoline cars under 5,000cc; DC 12V, Diesel cars under 3,500cc
USB Output: DC 5 V/2.4 A, LED light: Light 2 W, Lighting MAX 6 W; Charging Method: USB Cord; Charging Time: Approx. 3.5 hours (when charging 5 V/2.4 A); Operating Temperature: -4°F - 140°F (-20°C - 60°C); Storage Temperature: 32°F - 104°F (0°C - 40°C)
Protection Function: Backflow Protection (jump starter cable), Overcharge Protection: Jump Starter Cable Length: Approx. 10.2 inches (260 mm), USB Cord Length: Approx. 19.7 inches (500 mm)