I am also having this problem. I've acquired my (3) 600 EX-RTs over time and from numerous sources. This has been a problem in the past, but has seemingly gotten worse lately. They're effectively unusable now for professional work as i look foolish c...
Solution SummarySteps to Resolve Speedlite 600EX-RT Low/Change Battery Issue:Turn the Speedlite power switch to the Off positionRemove the SCH-E1 Color Filter HolderTurn the Speedlite power to the On position DetailsAfter recently purchasing a new C...
