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DoDonPachi Dai Ou Jou WL Battery/BL questions

Steelflight

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I finally got my favorite shmup. The PCB had the battery removed. Its the white label version.
First search show that i dont really need a replacement.
When it comes to the BlackLabel version rom U36 i do need a battery.
My questions are, can i use some coincell battery instead of the barrel one?
I read that the BL rom hack are not perfect. Crashes can happen. Is there another hack i should use?
For the new battery with hacked BL Rom i dont have to worry when the battery is empty? I can switch anytime from BL to WL with just switching the U36? Anything i have to be aware?
 
Correct - you do not need a battery for White Label.

The original Black Label PCB holds the encryption key in nvram. Once the battery dies, the nvram is cleared (along with the encrytion) and the PCB will display ROM error.

I've not heard of crashes running a Black Label conversion ROM on a white label PCB. I've heard that some of the bootleg PGM carts can have issues.
I finally got my favorite shmup. The PCB had the battery removed. Its the white label version.
First search show that i dont really need a replacement.
When it comes to the BlackLabel version rom U36 i do need a battery.
My questions are, can i use some coincell battery instead of the barrel one?
I read that the BL rom hack are not perfect. Crashes can happen. Is there another hack i should use?
For the new battery with hacked BL Rom i dont have to worry when the battery is empty? I can switch anytime from BL to WL with just switching the U36? Anything i have to be aware?
 
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