This is a 3d printed, reusable adapter for the obsolete K battery
(KK - 4.5V, 538, 7R31, 7K31, RPX31), my own design.

It simply takes 3 of the common LR43 batteries (not included), making it easy to revive pocket instamatic and Minolta pocket cameras, or other devices that used K batteries.

An original K battery (red) is shown in the photos for comparison and is not included.

Please note that due to the nature of 3d-printing and the fact that I might be updating the design, the adapter you receive might have small imperfections and look slightly different (also in colour).


Shipment costs are for normal, untracked mail. PostNL offers a reliable service. Upon request I can offer a registered, tracked service, please contact me for the exact cost. Buying with the standard shipment method is accepting that no tracking information can be provided.



Please keep in mind that this is a private sale, I cannot provide a guarantee for or accept returns
For non-EU buyers, please note that any import duties and other taxes are not included in the item price or the shipment cost. The buyer is responsible for these charges.