I think Its an expensive waste to purchase the box and circuit everytime a battery fails especially as the cell pack simply unplugs. After making this video I have now been informed that the separate battery pack is available though I could not find this option before the whole block with electronics was ordered else I would not have made this video. Don’t get me wrong Nagra makes quite incredible top quality gear but I was somehow expecting some very clever Tech in the battery box considering it’s price. I understand that these batteries have to pass many quality checks and special circuitry is required as Li-Po batteries can be quite dangerous if not used or charged correctly. It is therefore not wise to replace these yourself unless you seek the correct replacement parts that were designed for this specific item. If something goes wrong then you are risking the possible damage of your Nagra recorder.