I am in a possession of a Samsung Digicam S 700, typically peacefully residing in the glove compartment of my car. I need the camera very occasionally (say, once a month) for everyday-type of photos such as photos of friends, family, nature, contents of the whiteboard, small text on contracts I'm signing, etc. The used batteries are NiMH, of an AA Eneloop type. The maximal charge of a single battery is about 1700 mAh – 1800 mAh as of today; the original maximal charge was 1900 mAh.
When my batteries are charged one day before usage or less, the camera works without any problems for 10-20 photos, a short video, or more. No problem. Same when I'm using fresh Alkaline cells.
However, if the batteries have been charged about a week before usage or more, the camera can be turned on, but this action apparently drains so much power that the camera usually stops working right after being turned on; the lens remains pulled out. With the same batteries, the lens cannot be retracted again; the remaining charge is apparently not sufficient to turn the camera on again (one has to recharge the batteries first to reach that goal). With a lot of luck, in seldom cases, after being turned on, the camera continues working, and one can press the big shooting button to try to take one photo, but, after pressing the button, the camera turns off, with the lens still outside. Again, one cannot turn on the camera and retract the lens with the same pack of batteries (one has to re-charge them first).
If the battery pack is stored outside of the camera, the interval between charging and shooting can be prolonged by 1-2 days, not more. I tried to replace the battery pack by two non-Eneloop NiMH batteries with capacity 2100 mAh per battery; the result was the same. I tried to use Alkaline batteries instead: the first usage for taking a few photos was o.k., but the second usage a few weeks later did not succeed: the camera could be turned on, but after being turned on, the camera was dead with the lens outside as described above.
Some old, non-digital cameras had an internal capacitor which took the necessary charge from the battery while the camera had been turned on. The capacitor served as the intermediate power source for the next photo. Inside that old camera Alkaline cells could be stored for several years, and the camera still worked after being turned on. If that camera with an intermediate power source were digital, I would be happy with it. However, I am unaware of such cameras today.
My question: given that I would like to shoot photos once a month at previously unknown times (and would ideally like to keep batteries inside the camera to maintain the current date, though it's not a must) rather than recharge the batteries the day before using the camera, is there any trick that would still make this Digicam useful to me for the aforementioned purpose?
(Or should I get rid of this Digicam? In this case, which camera of approximately the same size as Samsung Digicam S 700 would not have the aforementioned issue? Or would a smartphone be a better solution than a Digicam despite not having a flash and a not having a retractable lens?)