Many decades ago, electricity was not available and most of our works were done without electricity. But with the advent of electricity, our lives have been made very easy. Many of the works that took a lot of time and energy can be easily done. For back up in failure of electricity, batteries were invented. Batteries are mainly used for vehicles and outdoor works like camping etc for fulfilment of electricity power supply. Electromate 400 is one such portable chargeable power source with jump start cables. It is best for outdoor camping etc or you can use it as a power source for your vehicles in case of battery failure. The whole Electromate 400 manual of operation is available online.