Product no.: Woodstock3D
Old price 35.00 €
Battery holder case for the Woodstock family of calculators, made with 3D printing and springs in stainless steel 304 alloy
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Number of ratings: 6
Average rating: 4.3
from Walter Renes on 3/2/2022
Apart from the colour this is a perfect way to power my HP21. It fits exactly, and snaps into place with confidence. I use regular AA alkaline batteries without problems, : no need to charge anymore. The remark below about flat-top batteries is not correct: because of the long springs regular batteries fit in easily.
from David Campbell on 9/19/2020
Unfortunately I have not yet received this product so I am unable to rate it.
from Anonymous on 6/11/2020
Fits well in my HP21. Easy to use.
from Donn Dengel on 6/11/2020
The product fits correctly, accommodates the rechargeable AA cells properly, and the calculator works well again. The workmanship of the product is excellent.
Very accurately dimensioned
from Roy on 1/16/2020
These holders are a perfect fit. However it is worth noting that you should use **flat-top** AA cells, not the usual type with a button on the positive end. The original HP packs used flat-top cells. They are slightly shorter so the springs compress more, allowing the pack to be removed easily. Using button-top cells both the original packs and the Calculator Store packs are very hard to remove.
seems really ok, all fits best
from Dr. Peter Schüller on 7/9/2019
the qualitiy of the production seems really perfect. Unfortunately I had to realise that my HP 25 is defect, so the investition has been for nothing - but thats not your blame.
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