Dynacore DT-4S Portable Quad Charger and Power Supply

The DT-4S is a 2-sided, portable quad-simultaneous charger for Dynacore's DPM Mini-series batteries, charging four at once. Beyond charging, it doubles as a power supply in its own right, so it can run camera or lighting gear directly off wall power without a battery in the loop.

It is the charger bundled into the 4-battery DPM kits, and also sells as the charging half of DIY multi-battery sets.