I use rechargeable, lithium AA's that have a male USB-A connector inside each battery. They usually last about as long as it take me to fill up the memory of my Model 102 journaling, so I change batteries and transfer files at the same time. The built-in usb connectors are really nice, because I never need space for a charger; I just plug them into my pc. However, there's usually little time for warning between the low-battery light, and the system not turning on. The memory will still be there for awhile after the system refuses to power on though, so I make sure to keep some batteries charged to swap them in, during that time frame. The batteries can be a little difficult to find but searching for "usb rechargeable AA" does bring them up amongst a sea of usb-C batteries.
-february On Thu, Jul 3, 2025, 10:07 AM Erik Keever <[email protected]> wrote: > Hi folks, > > I'm sort of curious, in the modern era the M100's use of 1.5V alkalines is > somewhat of a wasteful habit and they are slowly becoming less available > than they used to be as everything goes LiIon. > > Lithium batteries with builtin 1.5V regulators are nice for sure, but > given that its switching converter is apparently known for not being the > most reliable part of it (and seeing as it's driven by a discrete > darlington, is probably not exactly the most efficient power circuit ever > designed either), has anyone ever engineered a replacement with a modern > 2-output POL regulator that would take 4 stacked lithiums as input? > > -- Erik >
