650A Jump Starter

• "DIE HARD" JUMP STARTER
• 650A, 12V.
• Jump Starter.
• DC Power Source Outlet Provides Up To 16 Hours Of DC Power Or Accessories.
• Built In Light For Illumination Of Work Area.

First off, ill disclose that i purchased the 1100 amp model (largest, but not on amazon), but one of my issues relates to the whole line. Everything seemed to work well, even sporting an 80% charge from the store (although the % meter only ever showed 100%), could not jump a sedan which still had 10v left on the battery.

Main issue with this product line is the substandard clamp jaws. Only 1/2 of the jaw is electrically connected, the other side is insulated by the plastic of the handle. You don't get enough of an electrical connection to give your starter enough juice. Reviews on Sears' website are around 60% product returns, ranging from not charging/holding charge, to not able to jump a lawn mower. These reviews also explained why at my local sears 4 out of 5 boxes on the shelf looked open/returned.

There ARE some good reviews, so i'm hesitant to say straight out 'don't buy this', but i would be wary and fully test your unit before relying on it.

Went to pepboys and bought a Solar Booster Pac (900 peak amps), with only half charge turned my car on first crank....for less $$....just saying....