Battery alternative for DS3231 ?

[mfalkvidd]

According to the specs, the DS3231 rtc module wants a LIR2032, which is a rechargeable 3.6V lithium coin cell battery.

Can I use a regular CR2032 instead? My guess is that I can't, at least not without disabling the battery charging circuit on the DS3231. CR2032 are readily available where I live, but the LIR seems hard to find.

Alternatively, does anyone know where to get the LIR2032 shipped to Sweden?

https://www.aliexpress.com/item/5PCS-DS3231-AT24C32-IIC-RTC-Clock-Timer-Memory-Module-For-Arduino-Replace-DS1307/32649240960.html

[bjacobse]

https://www.batteribyen.dk/lir2032-1-stk-2812

[EDIT] I have removed Ebay sellers

[mfalkvidd]

@bjacobse have you had any luck getting ebay sellers to ship lion batteries? I've had the order cancelled multiple times.

[Nca78]

Hello, it seems you have to cut a trace to disable charging.
https://forum.arduino.cc/index.php?topic=278270.0

[mfalkvidd]

@Nca78 sweet, thanks!

[bjacobse]

@mfalkvidd
The first link was to a Danish site, they seems to sell :-)
I have removed the chinese ebay links, since they wont sell overseas/airfreight

[scalz]

for LIR batt, maybe amazon, or i think conrad may have some but then the price...

[tbowmo]

I believe that the chinese can't send batteries with lithium, due to aviation rules..

Normally you are not allowed to put lithium batteries in checked in bagage either, when flying.

[mfalkvidd]

I desoldered the 201 resistor, found that easier than cutting the trace. Works great.