Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Great jumpstarter. No extension cord included!

Great jump starter. Comfortable to carry around.Key points:1) They are selling new models now. These models do NOT need to be monitored while charging! Once charged it'll automatically turn the charger off and will not damage your battery2) Clamps are always under power! You have to be very careful if you want to put it for storage on the metal shelf: it may easily short-circuit over the shelf, since protective covers only cover the tips of clamps.3) There is NO AC charging cord in the package. This is a standard AC extension cord, it is available everywhere, but you'll need to buy one. There is only DC charging cord.4) The unit ships discharged.5) The unit has voltmeter (and percents) to display the remaining charge. In my case, after the first charge it is around 13V (higher than 100%). Not sure what it means though.