I just did the same as Colin, it works perfectly and cost me only a few pounds.

Colin, thanks a lot for having shared your experience !

Kind regards,

Jean-Sebastien

Great, Jean-Sebastien. Glad it worked for you too.

I've certainly not experienced any problems at all with it to date.
 

Hi guys,

I'm new here. Reading this thread has been very helpful for replacing my Beolink 7000 battery. Thank you for sharing all your hints and experience!! As I was looking for a battery replacement pack, I found this on ebay:

This is an old thread, however this information is still of use. I have had excellent success ordering from Cheap Battery Packs (cheapbatterypacks.com). You select a configuration step by step, and they build up a battery pack for you. The terminals are properly welded on with a solder tab if you specify "no wires" and "no plug". Here is an example part number: C-5-ELITE1700AA-Flat Pack-No Wire-No Plug. It cost about $22. 

A couple of tips - remove the lower cover, and pull off the round fuse while doing the soldering. The pack comes wrapped in a thick clear plastic - which is there to keep you from shorting the terminals (easy to do). However, the plastic keeps the batteries from properly nestling into the remote. So I remove the plastic, then immediately put electrical tape across the terminals. I always find the longest part is routing the wires after I'm done to make sure the cover will close properly. 

I just want to say - I have recently repaired a couple of these and was shocked to see the batteries charge at a rate of near 300mA, for a good number of hours until a predetermined voltage is reached. The charge process is then pulsed every few seconds as if to determine cell voltage. I am not surprised that there are so many problems with replacement batteries! I would only use good quality branded stuff like the original Sanyo types!