Nedis BANM9HF91B 8.4V 250mAh NiMH Review - Compatibility - Dimension sensitive?

[Kiriakos GR]

Few month ago I tested my luck by buying, two ANSMANN 8.4V 280mAh.
Both products demonstrate good performance at electrical tests, but both failed winning the title of best choice for dimension sensitive applications. 

Dimension sensitive application:
They are a number of products out there, these having a very narrow battery compartment.
Such a narrow battery compartment, this keeps compatibility with all 9V Alkaline (metallic cage).

Unfortunately for us interested using a NiMH as Alkaline replacement, we facing tough times.
8.4V NiMH with narrowed down (Slim) dimensions, they are easy to be found, at smallest available capacity.

This period of time I decided to make one last experiment at my cost.
Nedis BANM9HF91B this is widely available in Greece, and I just ordered one, so to test it mostly regarding dimensions compatibility.

History facts:
Nedis BANM9HF91B this is latest distributed product of Nedis (2018~2020~2026).
Nedis at 2015, they attempted selling NiMH cells under HQ branding, for unknown reason HQ branding this were abandoned.
Even so, all these 8.4V 250mAh NiMH, branded as HQ or Nedis, they have something in common, they appear as slightly thinner, according to few traces of product specifications, at seller's listings.

Nedis this changed ownership few months ago, and no one knows for how long they will continue distributing NiMH Cells.
Currently they are the only brand in EU, with the offering of two years warranty.

At the price of 10.90 € with VAT, I did not hesitate to pull the trigger, so to perform this review regarding it compatibility, at dimension sensitive applications.  https://www.e-shop.gr/nedis-banm9hf91b-rechargeable-battery-e-block-84v-250-mah-1tmx-p-ANA.NDS0022

In five days I will get back with my analysis results. 

8.4 V DC | 250 mAh | Precharged |E-Block
Height:  48.7mm  or 48?
Length: 25.7mm  or 26?
Width:  17.2mm  or  16  or 15.75mm ? (depth)
Weight 39 g or 39.11 g? 

[overvolt]

EU DECLARATION OF CONFORMITY --- attached  (16-9-2024)