HP Voyager series calculator battery query

[HP-12C]

Hi

Are the CR2032 cell or LR44 cell batteries used in the HP Voyager series corrosive?

Or are there different types of these batteries that are and are not corrosive?

I am just concerned if batteries should be left for long periods of time inside my HP-12's

Thanks for the help

[Steve Simpkin]

I would recommend “357” Silver oxide batteries over the LR44 Alkaline batteries. They last longer and I have never seen a 357 battery leak. I don’t recall seeing a CR2032 or any Lithium coin battery leak. As always, stick to good name brand batteries.

[brouhaha]

(07-23-2023 10:46 PM)HP-12C Wrote:  Are the CR2032 cell or LR44 cell batteries used in the HP Voyager series corrosive?

Very old Voyagers use three button cells.
Silver oxide are best: 357 or SR44
Alkaline will work: A76 or LR44

Old Voyagers use one coin cell, CR2032.

Newer Voyagers use two coin cells, CR2032.

[HP-12C]

Thank you both for the responses, it is very helpful as I am about to change out the batteries in several units.

[rprosperi]

I agree with all of the above advice, but emphasize using good/best quality batteries such as Energizers; I've also heard Varta are good. But note that I've personally seen every type of battery mentioned leak over (sometimes much) time, with the unique exception of Silver-Oxide 303/357 Energizer batteries.

2032 battery leaks are fairly rare, but it does happen in long-ignored devices. LR44 are similar, but they can and do leak, though typically leaking much less 'gunk' than common cheap alkaline cells.

Spend a bit more for good quality cells, your devices will appreciate it and are worth it.