If you don't use the battery for a long time, we suggest you charged it periodically.<br> <b>Please note: this battery can't be used as a Jump Starter Battery!!!</b> <br><br> <b>Specification:</b> <br>Capacity: 12V 24Ah 288Wh. <br>Build-in battery: 16pcs High Quality LiFePO4 Battery (32700) cells in 4S4P. <br><br> <b>Input:</b> <br>14.6V/20A. <br><br> <b>Output:</b> <br>Nominal: 12.8V (14.6-9V) /20A Max. <br><br> <b>Package content:</b> <br>1x 12V LiFePO4 Battery Pack <br><b>No battery charger !!!</b> <br><br> <b>NOTES</b> <br>Do not use the 12V lithium battery pack in places with high humidity or where it may be exposed to wet. <br>Do not modify or disassemble the power bank. <br>Do not throw the 12V power bank into fire or water. <br>Do not reverse the polarity of the battery pack.