Brand new Projecta 12volt jump pack with the rapid recharge technology. I fell in love with these for that reason and started selling them. Basically you Jumpstart the dead machine and let the clamps hooked up until it tells you that the charge is complete! Usually takes around a minute. Then it's ready to go again! It does have a trickle charger to charge that way as well. This unit is new never used. The photos I have of 1 being used is another test unit. Any questions feel free to ask!