Battery charger
 

Just noticed that the CB-2LWE clip-in battery charger which is an accessory for the HV-30 (and HV-20 presumably) is the one which is supplied with Canon digital still cameras like the EOS 400D. So I've got one already.

So what? Well up to now I've had to charge the HV-30 batteries in the camera but now I can charge them separately - while shooting if need be.

Just thought I'd share this in case there's somebody else with a HV20/30 and an EOS series still camera who hasn't realised this either.

Does that mean the Rebel batteries work as well?

Thanks for the tip!

Yes (just tried it) but NB-2LH supplied with EOS 400D is 720mAH whereas the BP-2L13 supplied with HV-30 is 1200mAH. The Rebel batteries are going to last just over half as long so size does matter in this case.

I use the BP-2L24H which is 2400 mAH for the HV-30.