Comparison Nitecore UMS4 vs Nitecore SC4

The number of independent charging channels provided in the design of the charger.

If the voltage, charging current and other parameters in this model are regulated on all battery slots at the same time, this means that the device has only one channel. The presence of several charging channels allows you to set your own operating parameters on separate slots and, accordingly, simultaneously charge different types of batteries in one device. In this case, the channel can cover both one slot and several: for example, many models for 4 batteries have only 2 channels (one for every 2 slots).

The abundance of channels expands the capabilities of the "charger" and will be especially useful in cases where you often have to charge different types of batteries; on the other hand, it significantly affects the cost of the device.

The smallest current that the device can provide in charge mode. If this parameter is specified in the specifications, this means that this model has the ability to adjust the charge current (otherwise, only the maximum current is indicated).

Charging current is one of the most important parameters for any charger: see “Maximum charge current. And the general range of current adjustment depends on this indicator: the lower the minimum value (with the same maximum) — the more extensive the possibilities for setting up the "charger" for the specific specifics of work.

The number of separate charge current settings (see above) provided in the design of the charger. For example, a device with 4 settings may provide options for 200, 400, 800 and 1000 mAh. In general, the larger this number, the more accurately you can choose the charging current for a particular situation.