The so-called pulse charger, is a through the battery through the current and the battery into the energy of the device. Is a kind of alternating current into low voltage direct current equipment, it is in accordance with the charging method to distinguish, different from other charging methods.
How to distinguish between pulse charger and constant current charger?
With a 2.5mm2 BV line to do a 10 turns of the solenoid, in the vicinity of a compass. Will be a car with incandescent bulbs (12v or 6v to see the battery charger in that file) in series connected to the electric car charger, then the compass pointed to the solenoid that the charger is "constant current charger." If the compass pointed to the solenoid at a certain angle or repeat the swing, then the charger is "pulse charger".