The upgraded Nitecore i4 itellicharger has double the charging speed compared to the previous model. It can achieve a maximum output of 1500 mA when charging a single battery or 750 mA per bay when charging two batteries at once.
Among the other novelties is the active distribution technology, which autonomously allocates all the power to the designated areas. For instance, in the event that two batteries are being charged simultaneously and one of them is fully charged, the i4 would allocate all the power to the single bay containing the uncharged battery.