What's a good replacement for 3.6V 1/2AA PRAM battery?

[Shymon184]

I took this battery out of my Macintosh CC before it started leaking, and I'd like to find a replacement for it. I've searched local stores and they don't sell these, so I'm asking what's the best replacement for this kind of battery?

 

[Challenger 1983]

I just bought a pair of these

https://www.amazon.com/Synergy-Digital-Combo-Pack-Compatible-Dogwatch/dp/B06XQ7V7R2/ref=mp_s_a_1_4?dchild=1&keywords=3.6+volt+lithium+battery&qid=1604150589&sr=8-4
 

Really anything with 3.6v will work, if you are handy then you could rig up your own battery holder away from the board to prevent corrosion.

 

[ttb]

I've used the Saft 1/2 AA cells mentioned above with success. In machines that I think I may forget about, I've desoldered the 1/2 AA holder and put in a CR2032 holder in its place:

https://www.digikey.com/en/products/detail/keystone-electronics/1058TR/5118854

The CR2032s are a nominal 3.2V but appear to work fine. They have less capacity but rarely leak and are cheap/readily available.

 

[Bendix]

I took 2 AA batteries and soldered one of these holders to the outside of the clamps of the original holder:

https://www.amazon.com/-/de/dp/B07TB4HDYH/ref=zg_bs_18007817011_13

Fixed the new holder somewhere inside the SE with a strap.