Who said anything about conventional coin cells?
You need VL2330 cells, which are not the sort of things you buy from camera shops and supermarkets. They can, however, be bought from specialist suppliers for relatively little, and even appear on eBay from time to time if the usual electronics suppliers do not take your fancy. They can also helpfully be found with soldering tabs if you take the trouble to look for them.
That is all there is in the backup battery of most mid-to-late-90s PowerBooks, apart from the wiring. The 2400c is a rare exception, having a different arrangement altogether, but then, it was unique in lots of ways.
Wallstreets, though not immune from anomalies related to a dead backup battery, are sanguine enough in life without one even for serious use. A very occasional power management reset can be necessary, but a Wallstreet will not give you the kind of trouble a Pismo, a 2400c, a Duo, or a 5300 is prone to pose for you without one. I used a Wallstreet daily for years with a dead backup battery, wrote a book on one, lost nothing of what I wrote as far as I recall, and thus found it virtually trouble free. Conversely, I just today used a Pismo with a dead backup battery, and lost hours of work when it refused to wake from sleep; it required a hard restart, presumably because the power management got confused. Must ... fix ... Pismo.
Unfortunately, a Wallstreet takes six of those little cells. The Pismo only takes four.
You need VL2330 cells, which are not the sort of things you buy from camera shops and supermarkets. They can, however, be bought from specialist suppliers for relatively little, and even appear on eBay from time to time if the usual electronics suppliers do not take your fancy. They can also helpfully be found with soldering tabs if you take the trouble to look for them.
That is all there is in the backup battery of most mid-to-late-90s PowerBooks, apart from the wiring. The 2400c is a rare exception, having a different arrangement altogether, but then, it was unique in lots of ways.
Wallstreets, though not immune from anomalies related to a dead backup battery, are sanguine enough in life without one even for serious use. A very occasional power management reset can be necessary, but a Wallstreet will not give you the kind of trouble a Pismo, a 2400c, a Duo, or a 5300 is prone to pose for you without one. I used a Wallstreet daily for years with a dead backup battery, wrote a book on one, lost nothing of what I wrote as far as I recall, and thus found it virtually trouble free. Conversely, I just today used a Pismo with a dead backup battery, and lost hours of work when it refused to wake from sleep; it required a hard restart, presumably because the power management got confused. Must ... fix ... Pismo.
Unfortunately, a Wallstreet takes six of those little cells. The Pismo only takes four.