I often see those in this forum and across the EV community use the term “trickle charging” to indicate an especially slow charge rate, such as 1 kW AC Level 1 charging. That’s misappropriating the term. To quote Wikipedia, “trickle charging means charging a fully charged battery at a rate equal to its self-discharge rate, thus enabling the battery to remain at its fully charged level.” Lead-acid batteries are commonly trickle charged when stored. It continues:
“Other battery chemistries, such as lithium-ion battery technology, cannot be safely trickle charged. In that case, supervisory circuits (sometimes called battery management systems) adjust electrical conditions during charging to match the requirements of the battery chemistry. For Li-ion batteries generally, and for some variants especially, failure to accommodate the limitations of the chemistry and electro-chemistry of a cell, with regard to trickle charging after reaching a fully charged state, can lead to overheating and, possibly to fire or explosion.”I realize this is pedantic, but trickle charging has a very specific meaning with a well defined purpose. No one is trickle charging their Li-ion EV battery.