runtime
I’m guessing from my “having to fix the bathroom light at 11pm using only the MTE 900 to light the room as I’ve turned all the electric off” test I ended up doing the night before last, around an hour or so on full, so probably 2 or 3 + on medium, and by all accounts about 10 hours on low.
Given that the batteries work out about £3.50 each, I’d say that’s not so bad. With the added advantage that if a battery gets stuffed, you’re not stuck with a custom powerpack.
Oh, and yes, I was angry about the bathroom light. But the MTE (shone at the ceiling from the floor) was able to light the room really well – more so than the ceiling light!