I posted pics of this device once in the tools section. Missionary friends of mine use it in Uganda. After a scorpion sting they charge the 125cc motorcycle coil with those D cell batteries and then discharge the coil with electrodes on either side of the bite. Apparently the current from the discharge either depolarizes the venom, or cooks the venom protein. They say it gives immediate but not complete relief but can be repeated until it does.