Unfortunately, not really low self-discharge

Because I'm interested in the topic LSD batteries and I wanted to know, keep that manufacturers of these types of batteries also deliver what they promise, I have a long-term measurement of 4 different 9V batteries made with this property. The capacity was measured (among other things) after 1 day, 45 days and 1 year (why 45 days? - I have simply forgotten to measure after 30 days). The measurements were performed with my Conrad Charge Manager 2015.

However, I have only one copy per manufacturer tested, so I can not comment on the manufacturing tolerances of course.

The Ansmann battery had after about 1 year, only about 47% of its initial capacity. While he has absolutely after this period even more than the GP. However, it can be assumed that he then falls back towards this. Against the Varta he has been heavily drained at this time.

With me now creeps presumption one that the Ansmann battery and tecxus battery not be actual LSD-battery, which can mean that after a few charge cycles, the self-discharge rate significantly increased (see. The Wikipedia article on LSD Batteries).

The Varta battery has obtained the best results in the comparison together with the GP Recyco +. However, the former has a larger capacity and is therefore my favorite.

Here is the table with the results:

Manufacturer / Product ID / initial capacity / Selbstentl. 45 d / Selbstentl. 1 a
GP ReCyko + / 15R8HB / 204.4 mAh / 12.33% / 22.26%
tecxus READY TO USE / BB-BC / 313.4 mAh / 13.59% / 50.93%
Ansmann max e / 6F22 / 328.1 mAh / 11.00% / 47.33%
VARTA READY TO USE / 56722 HR9V / 265.5 mAh / 12.20% / 23.62%

PS: No, in Amazon reviews you can obviously create ;-( no reasonable Tables But Copy & Paste and spreadsheet are your friends ....