***HOT*** Pixel TD-381 Flashgun External Power Pack for Canon Speedlites

Description

For sale is a Pixel TD-381 battery pack.  I used this sparingly with a Canon 580EXII flash.  It works very well.  Shortens recycle time considerably and extends number of flashes.  Uses 8 AA batteries (not included).  I used Eneloops.  Shipping is FREE within the CONUS.  Thanks for looking!!
Specification
TD-381 is a battery power pack for for Canon 580EX II, EX580, Ex550, MR-14EX,MT-24EX, with extremely extremely stable fast recycle time 1.24s.
Using two groups of symmetrical charge system, it's more stable charging voltage and faster recycles time.
Flexible and convenience to use choose charging with one or two group freely, holds 8 AA batteries. Stand-by power consumption is more save and recycle power compare with similar product.
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.