Interesting; do they require a special charger?

On Thu, Jul 3, 2025 at 3:58 PM Erik Keever <[email protected]> wrote:

> 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
>>>>
>>>

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