1.TD-381(NEW) is a battery pack for Canon and Mago Speedlite.
2.Using two groups of symmetrical charge system, it‘s more stabile charging voltage and faster recycles time.
3.Flexible and convenience to use choose charging with one or two group freely.
4.Stand-by power consumption is more save and recycle power compare with similar product.
5.The flashgun power pack has built-in thermal protection switch, when the frequent use lead to thermal. Protection of power pack, it stops working. However, the battery pack will continue work after cooling.