user57281: I've a CR2032 battery connected to DS3231 module as backup battery, when module is connected to 5V the battery voltage is at 4.3V and without power 3.7V.
That means the module is trying to charge the nonchargeable battery, i couldn't find a chargeable (LIR23032) battery to buy and after some research someone in forums suggested to remove the diode from the module...

If i keep using the CR2032 battery for long run 24/7, how long will battery last? is there a chance of explosion?
is there any other way than modifying the module it self?


user4143: 
If i keep using the CR2032 battery for long run 24/7, how long will battery last? is there a chance of explosion?

Yes. Recharging a non-rechargeable battery is dangerous. It should be avoided at all costs.

is there any other way than modifying the module it self?

You have to prevent the power getting to the battery. That power is fed through a diode (hence 4.3V, which is 5V minus 0.7v for a silicon diode forward voltage).  Without knowing what the module is, I can't tell you if there is any other way that modifying it - however I would guess that no there isn't. You need to stop that power getting to the battery, and that can only be done at some point between where the power comes in to the module and the battery itself - and the simplest method is to remove the diode.
The purpose of that diode is to prevent power from the battery from trying to power the rest of your circuit when you remove the main power. Removing the diode will have no adverse affect.  You just won't be able to charge a rechargeable battery in future.

57281: <p>I've a CR2032 battery connected to DS3231 module as backup battery, when module is connected to 5V the battery voltage is at 4.3V and without power 3.7V.</p>

<p>That means the module is trying to charge the nonchargeable battery, i couldn't find a chargeable (LIR23032) battery to buy and after some research someone in forums suggested to remove the diode from the module...</p>

<ol>
<li><p>If i keep using the CR2032 battery for long run 24/7, how long will battery last? is there a chance of explosion?</p></li>
<li><p>is there any other way than modifying the module it self?</p></li>
</ol>
 4143: <blockquote>
  <p>If i keep using the CR2032 battery for long run 24/7, how long will battery last? is there a chance of explosion?</p>
</blockquote>

<p>Yes. Recharging a non-rechargeable battery is dangerous. It should be avoided at all costs.</p>

<blockquote>
  <p>is there any other way than modifying the module it self?</p>
</blockquote>

<p>You have to prevent the power getting to the battery. That power is fed through a diode (hence 4.3V, which is 5V minus 0.7v for a silicon diode forward voltage).  Without knowing what the module is, I can't tell you if there is any other way that modifying it - however I would guess that no there isn't. You need to stop that power getting to the battery, and that can only be done at some point between where the power comes in to the module and the battery itself - and the simplest method is to remove the diode.</p>

<p>The purpose of that diode is to prevent power from the battery from trying to power the rest of your circuit when you remove the main power. Removing the diode will have no adverse affect.  You just won't be able to charge a rechargeable battery in future.</p>
