Hybrid electrofusion processor

A hybrid electrofusion processor comprising:

• a battery;
• leads configured to connect the battery to an electrofusion coupler for welding two plastic pipes;
• a detector for sensing whether the battery can supply sufficient energy to the coupler to provide a satisfactory weld;
• the detector being configured to sense a resistance of a coil in the coupler prior to each weld;
• an input for selectively receiving power from an alternating current (AC) power source, the input being a jack configured to receive a plug from the AC power source:
• a display configured to warn a user to use power from the AC power source instead of the battery if the detector senses that the battery cannot supply sufficient energy to the coupler to provide a satisfactory weld;
• a switch configured to connect the input from the jack for the AC power source, instead of the battery, to the leads in response to the detector sensing that the battery cannot supply sufficient energy to provide a satisfactory weld;
• and wherein
• the processor is configured to weld couplers of different sizes, wherein:
• the detector is configured to measure the resistance of a coil in a first coupler to determine whether the battery has sufficient energy to perform an acceptable weld on the first coupler solely with the battery power;
• the detector being further configured to measure the resistance of a coil in a second coupler of a different size than the first coupler to determine whether the battery contained in the processor has sufficient energy to perform an acceptable weld on the second coupler solely with battery power;
• and
• the processor being contained in a portable case having an input jack for receiving power from an external AC power source if it is determined that the battery does not have sufficient capacity to provide an acceptable weld for the first or second coupler.