Was the green LED push button quickly blinking? That would indicate that the JdeMO software was automatically slowing the charge rate for high battery temperature, first to: 90 amps - 113F degrees battery temp 60 amps - 117F degrees battery temp 30 amps - 121F degrees battery temp OFF ------ 125F degrees battery temp Obviously, if you had selected the half charge rate, that would also increase time (and the Nissan charger would have shown 57 amps when the battery was below about 85%). Finally, there could have been an issue with the charger. Not every charger is 100-125 amp capable. The difference between the ABB and Nissan charger is only 5 amps, or less than 5%. My recommendation in warm / hot weather... run the climate control on AUTO, not ECO LO or ECO HI. This will keep the cells at the coolest temperatures, and cycle the air conditioner pump at full power (which is the same pump that cools the battery).