XVive U2C Battery Kit (BU2)

I've used Thomann for many years, so when I realised that my XVive U2C units were over 10 years old, I thought it time to renew the batteries. I had no hesitation in ordering from Thomann because I've always had excellent service. The batteries arrived in a couple of days. I had no trouble fitting them, the only small worry was that the plastic ring around the jack plugs where they exit the units needed quite a lot of effort to get off and needed a bit of tape around the shaft of the plug to ensure that they did not slide off. I've recharged them at least 15 times since fitting and played live through them the same number of times. All works great. Thanks.

I had to return this battery replacement kit because it didn’t fit my Version of Xvive U2. In other words, it was incompatible although the description says it’s for the U2 model. My Xvive U2 is already a few years old and when trying to use the kit it became clear that the screwdriver didn’t fit the 3 tiny screws. And on my Xvive U2 receiver and transmitter the batteries are soldered to the board. So no way to unplug the original battery. I think Thomann should inform that this kit is only for updated versions of the U2.

My Xvive U2 set is now 4 years old and have been used on a daily basis. So, no complaints about the quality of the batteries but they don’t last forever.
I ordered a set of replacement batteries and received them (as always) correctly packaged and quick. So far so good.

The replacement is however not that easy! Dismantling these tiny devices requires some degree of precision and patience. The screws are tiny and the screwdriver that was in the package did not fit the screws. Luckily for me, I have a set of micro screwdrivers but I hope that the one in my package was a one off and that others are luckier.
The package comes with several replacement parts as they know that there are breakages possible.

The most dangerous part of this operation is taking the old batteries out. They are stuck with double sided sticky tape to the print board and I mean they are stuck!
My advice is to wiggle the batterie from left to right as far as possible and with great caution.
The cover of these batteries is aluminium foil, so not very protective. If you put a sharp object underneath the batterie to lift it out you take a serious risk to damage the batterie and it can start overheating, even catch fire. So be very careful because these are lithium batteries that can seriously heat up and start a fire when forced.

Once replaced I tested the old batteries in my garden and a simple poke with a screwdriver without using much force, caused a spark. The batterie became so hot that it would burn you if you tried to touch it. You don’t want that to happen indoors!

I honestly think that Thoman should warn potential buyers before they place an order. A question of safety!

However, replacing these batteries with great care is a lot cheaper than buying a new set, so well worth it. But once again BE VERY CAREFUL!