I assume “electrical store” here is a mistranslation of “electronics store,” and not a hip new name for the vending machines in Mega Man Battle Network 4. [Source]
In 2004, Capcom released packs of Mega Man Zero 3 modification cards in Japan. Using these cards with the Game Boy Advance’s e-Reader unlocked special in-game features. For instance, one of of cards replaced the computer in Ciel’s laboratory with a soda machine.
In case you’re curious, here’s the modification card in question…
What to choose: BlackHole Cola or ZeroG Punch?
Strangely, these unused 3D models appear in the code for Mega Man Battle Network 5 for the DS—strangely because MMBN5 is a 2D game. Anyway, there’s a 7-Eleven (which seems a bit out of place in the Mega Man universe) and a bunch of soda machines. [Source]
I just realized I have a soda machine from the Mega Man Legends beta in the archive, but I didn’t have one from the final release. So, here it is!
Choo, choooo! Hop aboard the soda machine train with Mega Man Battle Network 6!
Wow, what battles—and what soda machines—in Mega Man Battle Network 4!
As soon as I get a status update on that penguin, I can devote my full attention to this soda machine from Mega Man Battle Network 6.
You can’t expect to keep a government research facility running without caffeine and sugar. Fortunately, there’s a soda machine on hand in Mega Man Battle Network 5’s SciLab.
Swing by the vending machine at Koto Mart in Mega Man Battle Network 2 and grab a soda-pop! [Source]
Proper hydration is the key to becoming a successful NetBattler in Mega Man Battle Network 3!
You’re bound to get parched battling an enemy with a name like DustMan. Good thing Mega Man Battle Network 6 has plenty of soda machines! [Source]
Mega Man Battle Network asks the age-old question, “Is a soda machine without any soda still a soda machine?” Answer: Yes, of course it is.
Mega Man pauses to consider a soda machine in the Mega Man Legends/Rockman DASH beta. Apparently, it was distributed as a demo to members of the Capcom Friendly Club in August 1997. Capcom ultimately went with a different design for the final release.