Antigravity Atz-7 ReStart 150Ca Lithium Ion Battery The Antigravity Lithium-Ion is a hi-power, lightweight battery, built with our groundbreaking Restart Technology so you won't ever get stranded with a dead battery again! Features No need for jumper cables, just simply press the Re-Start button to start your bike and drive away Re-Start technology intelligently monitors the voltage and will put itself to sleep if it senses over-discharge Offers a full onboard Battery Management System (Bms) including functions such as lithium cell balancing, low-voltage cut-off, over-discharge/over-charge and temperature protections Shock and vibration resistant making them perfect for racing Does not contain acid or heavy metals such as Lead, Cadmium, or Mercury making them a more environmentally safe