<b> When you are charging ,you need to push the battery switch to position "I" </b> <br>Rechargeable 12V Lithium-ion Battery Pack is designed specifically to integrate with Light bars, Flexible LED Lights, or any 12V DC electronic device. <br>The Lithium Ion Battery Pack can be recharged without limitations, as the battery is designed for a slow charge process (8 hours for full charge), which helps the battery pack last longer. <br> <br> <b>Package content:</b> <br>1x DC 12V 3000mAh Rechargeable Li-ion Battery <br>1x Power Cable <br>1x 12.6V Charger for battery <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 power bank into fire or water. <br>Do not place the power bank during charging on flammbable materials such as in the bed or carpets.