Roland's batteries!

In case you were not aware, Roland also had batteries with their own brand!


I became aware of that when I had to open my Roland TR-909, and it was a bit surprising to notice the batteries were actually branded Roland...

But as you can see from the photo I took back then, they really had Roland batteries!
And since they seem to be still working, they can't be that bad either ;)

Roland's own batteries! Inside a Roland TR-909!

I'm just not sure if those were sold separately, or only bundled together with their own gear...

Anyone else still uses batteries from there?