The information in datasheets about cycle life is basically useless for any comparison. The reason why this information is given is the possibility of a warranty claim by the customer. The manufacturer would prefer not to provide this information at all for public.
For modern widely available HE cylindrical cells with >700Wh/l, the standard is 1000 cycles at 100% DoD (4.20-2.50V) with >80% nominal capacity left, 90-95% DoD (4.15-3.00V) after 1000 cycles ends >90% nominal. But of course if you like, you can still buy and use the cells with only 500 cycles at the same conditions.
These two cells have very similar properties. M50LT is slightly better in cycle life at 0.5C standard charge rate. 50G only beat M50LT at higher charging rate up to 1C continuous. You can also check that 50G is quite popular in automotive as Lucid Air https://youtu.be/Ga0qMqUG2X4?t=547 (9:10 time) and I think Rivian used them as well. In general it can be said that almost all HE cells in 21700 format are good i.e. with the exception of Panasonic, which cycle life is still significantly worse when cycled at high DoD or continuous fast charge rate. So I would choose according to the current price.
Btw. In near future, there will be added M58T, 48X nad 50G to the chart.
I have one in a e07 fireflies flashlight. The top has been dented in as far as it can go. Its resting directly on the vent area. I have to add a magnet to charge it as it won’t make contact now.
If your torch has a strong spring or you occasionally drop it id add a 2mm magnet or something before using it.
Never had this happen before. Did someone say they have bottom vents too. Is it still ok to use?
This torch has a coil spring at each end so has concentrated some force onto the center of the thinner wider contact.
Hi there. I was unable to find an information how to understand lg inr21700 m50lt manufacturing date. Can anybody explain or share a datasheet with the explanation, please?