If your car battery is dead, jumper cables are handy, but nothing can save the day quite like a jump box. buy one or make one. here is a discussion.. Diy projects describing how jumpstart your car using some a123 batteries. showed is that he can jump start his car using a powerful battery pack that can fit. How to build: the ultimate diy heavy duty camping battery box, jumper pack!.
Half minute power 400a peak 12v mini car battery jump starter emergency booster charger and emergency jump pack auto jumper for smart phones,mp3-5 players, wireless. I have a black and decker 450 amp jump starter. the car battery was dead because the lights were left on. i wanted to use the car in the morning. i.... If you're looking for a way to build a battery box for use as a portable power system, we're happy to say that we've already done it. it's called the arkpak..