Canon BG-E3 *does* work with one battery

I just got the Canon BG-E3 battery grip for the EOS 400D.

Before buying it, I wasn’t able to find out whether it could work with just one battery inserted, sparing me the cost of an additional battery, but giving me the advantage of comfortable portrait-shooting and a better center of gravity with long, heavy lenses.

After receiving the BG-E3 yesterday, I can confirm that it does work with just one NB-2LH battery. I can think of a couple of use cases for this:

• You’re on a tight bugdet, and want the advantages of the battery grip, other than just extended battery life.
• You have two batteries, but you’re shooting in low temperatures that drain your battery faster than otherwise. You can keep one battery in your (warm) pocket, and periodically swap batteries to counter the cold-drain.

I ended up buying an extra NB-2LH anyway, but now you don’t have to