Topic: CR123A battery external

[schtaaf]

Hi,
I have a termometer placed on a (private) dock so I can keep track of the water temperature telling me when I have to do something about the ice when/if the fiord freezes over.  The termometer communicates with my WeatherStation II which in turn puts the weatherdata on a web-site, a solution that have last several years.

However, the CR123A battery lasts only close to 5 months making the termometer lose connection.  As the dock with the termometer is unaccessible until June, I am looking for a solution that keeps it alive for a longer period.  Perhaps a 'box' with 2 batteries coupled in parallell.

Is there something like that out there?

[davidmc36]

https://www.thingiverse.com/thing:487437

Make the springs and what not for contacts out of just about anything.

I am sure there must be a dummy battery to print also to slip into the unit.

[johnd]

https://batteryeliminatorstore.com/products/cr123a-wired-active-cell

seems likely to fit the bill, albeit not cheap for what it is and with only 3 feet of wire. So be sure to thoroughly waterproof any connections if exposed to the weather.

[jaltman]

It looks like this could be wired for series or parallel and then put in a box; https://www.amazon.com/DGZZI-2-Slot-CR123A-Battery-Storage/dp/B08R36DLXB

Jim

[schtaaf]

The battery eliminator thing looks interesting, I will have to make a watertight box with two CR123 batteries inside.  I can do that!

Thank you all for helping!

[Mattk]

Instead of duplicating the CR123 use either 2*C or 2*D cells which have a much higher combined storage capacity.