brand new and high quality Features: Made of high quality material, solid, durable, good conductivity and good performance, long service life. The inverter can reach up to 150 amps in an instant using a fishing machine. Maximum continuous operation current of 100 amps. It can be used on for DC electric appliances with for DC 12V and working current 1A-200A. The output current is output as required by the appliance (the battery must supply the required current). Used to assemble a lithium iron phosphate battery with a nominal voltage of 3.2V (four series 12v). Battery for protection board only, other accessories demo in the picture is not included! Specification: Optional Current: 50/150A Material: PCB Board, Electronic Components Size: app.7.5 x 5.1 x 1.4cm/2.95 x 2.01 x 0.55in Wire Length: 30cm/11.81in Color: Blue Quantity: 1 Pc Product Parameters: 50A: Charging Current: Within 50A Continuous Working Current: Within 50A for Peak Current: Within 100A Over Charge for Protection Voltage: Cell 3.65V 0.025V Over Discharge for Protection Voltage: Cell 2V 0.1V Short Circuit Protection: Yes Balance Charge: Yes Continuous Power: Suit for the devices within 600W Assemble: 3.2V (Include 18650) 150A: Charging Current: Within 100A Continuous Working Current: Within 100A for Peak Current: Within 200A Over Charge for Protection Voltage: Cell 3.6V 0.025V Over Discharge for Protection Voltage: Cell 2V 0.1V Short Circuit Protection: High current won'for t be short circuit. Balance Charge: Yes Continuous Power: Suit for the devices within 1200W Assemble: 3.2V (Include 18650) Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Battery for Protection Board