The loading methods are different.
1. Lithium battery charger refers to a charger that charges lithium batteries. This charger is suitable for a 220 V AC power supply and charges lithium batteries through the transformation of the charger's internal circuit.
2. The ideal charging current is pulse type. For pulse charging, it is best to use a pulsed DC charge which is directly rectified by the 50-60 Hz mains supply without filtering.