If you ever get the chance, try the Ultrafire DV-S9? 26650, triple O-rings at the tail, magnetic slider for moonlight-to-turbo. Quite nice for ~15bux(US).
Wondered why the huge discrepancy in NiMH D cells. I know the Rat Shack ones were essentially NiMH AA cells but mounted in a D-sized shell (ie, same capacity for AA and D!), but wondered if I could assume something similar for the D cells you mentioned.
THe 2500mAh or so D cells tend to be very light.It never crossed my mind that they may be a shell with an AA inside. I’ll need to look into that, literally.
Long time ago I had some Radio Shack NiCad D’s - 4400mA. Used them for diving in a 4xD light (18W) almost every weekend for probably 8 years. Then got some 8x Radio Shack 4500mA NiMh. These have a 2002 date on them. They got used the same way for ~ 10 years. I still have them and use them in emergency lanterns. At last capacity test they came close to spec, ~4300mA. Hefty batteries, reliable as hell. I’ve had a number of different D’s during that period, but none that could do the weekly long haul like these. They sure as hell are not AA in a D-shell. Maybe they changed them later, but these were excellent.
I’ve read, but not tested, that D-Eneloops are shells.
I’ve had good results from a year+ hard use of the C-Centura LSD.
I had lousy results from the blue 10K, but they were an eBay deal and may have been stored/abused. They lasted 2-3 years and performed poorly with lousy retention. OK if used immediately after filling.
Yeah, back when they were widely available on eBay I bought some of the Tenergy LSD cells
— light blue with a lower case letter “e” on the side. They were on deep discount in large batches.
(At the time they were discontinued, no longer for sale on Tenergy’s site, replaced by the white ones now available)
They were, most of them, terrible — lost capacity fast on the shelf. Maybe one in eight or ten was good.
I read somewhere later that a lot of them had been in outdoor metal shipping box storage that sat too long in the heat.
Well, I have both LSD D cells from Tenergy and Imedion to power my Fenix TK70 modded by saablaster.
It’s been quiet a long while since I have refreshed them but when I will have time in the near future I will take a discharge test in my iCharger and get a Logview graph of its discharge performance, perhaps at 7amps, though from simple discharge tests I have done when I initially got the Imedions and 15 months of so thereafter, I remember I am not happy with its capacity retention. Both cells have undergone break-in
and eventual refresh processes in both iCharger and Maha C9000 using adaptors.