Battery shoe for DLED2.1 Bi-Colour and Daylight models with integrated electronics (non-yoke versions).
Accepts SWIT S-8972/8770 and Sony NP-F950/960/970 batteries (7.2V / 47Wh), also used for Sony cameras such as FS700R and NX5.
DLED2.1 power consumption is 25 watts.