Mike, I recently got a 4 pack of these including charger,
https://www.amazon.com/messule-Rechargeable-Lithium-Batteries-Constant/dp/B0CZ3YLRS7 But there's probably fifty kinds for sale on Amazon, mostly from shops with pseudorandom characters for names. One inclined to suspicion might even imagine they were all from the same factory. Can confirm they work perfectly with my M100 and last a good long time. Their output does droop with discharge as I do get a brief window of low-batt warning, but it's pretty short. -- Erik On Thu, Jul 3, 2025 at 11:20 AM Mike Stein <[email protected]> wrote: > I use 2 sets of IKEA LADDA rechargeables which seem to be Eneloops under a > different name but at half the price: > Panasonic Eneloop vs IKEA LADDA | Are They The Same? > <https://www.slrlounge.com/panasonic-eneloop-vs-ikea-ladda-are-they-the-same/> > > Also, there's info out there somewhere about adjusting the M100's low > battery light and cutoff to better match NiMh batteries' 1.2V vs 1.5 > > I have some 1.5V AA rechargeable batteries at home which AFAIR are ZnFe > technology but their shelf life isn't great and they seem to have > disappeared from the market, replaced by those regulated Lithiums; anybody > know anything about those? > > On Thu, Jul 3, 2025 at 1:14 PM Tom Cronin <[email protected]> > wrote: > >> It doesn't answer your question directly; I use Eneloop >> rechargeable batteries in my M100 and M200 and note excellent battery life >> without any problems. >> >> On Thu, Jul 3, 2025 at 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 >>> >>
