and they like to choose a power supply as a charger, we advice to pick up one which over load protection (OLP) mode is constant cur
rent limiting. The models in this mode provide constant current even when the protection circuit is triggered. The second choice is fold-back current limiting .or constant wattage model. In this model, when a battery is running low, the output current of the power supply
will gently increase. The level of increase depends on battery抯 capacity and degree of exhaustion. Hiccup .or shut down model are
not recommended because it will stop to generate current when OLP happens.