I bought one of these:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160438173336&ssPageName=STRK:MEWAX:IT
but only using it for my USNPre2 so far. I want to try it with the pre and the 680. One thing you will not like is the lack of any kind of charge indicator
This is the same battery I use with my DR680. It's been reliable, so far.
How long did you run it? How many channels did you use? Was phantom power on?
Well, the longest I've had occasion to run it so far was about 2.5 hours with 6 channels (4 channels phantom and 2 channels line in) at 24/48. Since there's no battery meter I had no way of knowing how close I came to draining the thing.
I have two of these and I have run it for 6.5 hours and then stopped it, but I don't know how much juice it had left. That time I had two channels with phantom power.
I have used them in really cold weather and they work fine.
There is a problem with both of them that is annoying...
When I switch it on and have it close to 680 there is a signal that gets recorded... I don't have to have it connected to 680. I can hear the signal just holding it close to my ear.
It ruins the recordings... getting a signal at 4000, 8000, 12000, 16000hz and so on...
The problem is solved by getting the battery away from 680 and a 1/2 meter is enough. The default cable must be stretched fully to avoid the signal. I have made my own cable now with angled connectors and it's a bit longer than the cable that came with the battery.
It's a drawback to not be able to have it in the same case. Especially when both of them fitted in the extra pocket on the 680 case. I just have to remember to take them out and put them away from the recorder when i use them.
Does anyone know how to fix this? It guess it's the on/off switch that is bad. I haven't opened them up yet.