May the mod reviewing this first post here move it to a separate thread if it's not appropriate to add to this Eneloop mega-thread.
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Newbie here (be gentle). Web-searches kept pointing to candlepowerforums as THE place for expertise on NiMH rechargeable batteries . . .

May be uncommon retail here relative to the "Eneloop" designation, but there are several Fujitsu/FDK battery models listed at (somewhat-end-user-ordering-friendly) industrial suppliers of electronic components (at least the data sheets for each are headed either "FDK Twicell" or "Panasonic").

Can anyone comment (or point to a url) on common "Eneloop" names for the type of model numbers found for AAs at such a source (examples below)? The only two bits of info I could find implied that retail package HR-3UTHCEX could be 3rd or 4th gen Eneloop Pro and that HR-3UTG could be 1st gen Eneloop (although 1900/2000mAh is such a common spec). If it's noteworthy, 10x more HR-3U-2500 and HHR-210AAC4B batteries are in stock (late 2019), relative to the others.

Thanks!

Here are some of the numbers and specs for AA 1.2V mentioned (forgive the formatting).

individual cells name minimum/typical size approx cycles
HR-3U-2500 TWICELL 2300/2500mAh 14.35mm x 50.4mm 31g no "up to" cycles listed
HR-3UWX TWICELL 2400/2500mAh 14.50mm x 50.4mm 30g no "up to" cycles listed
HR-3UTG TWICELL 1900/2000mAh 14.35mm x 50.4mm 27g no "up to" cycles listed
BK-200AAB9B PANASONIC 1900/2000mAh 14.50mm x 50.5mm 29g no "up to" cycles listed
HHR-210AAC4B PANASONIC 2000/2080mAh 14.50mm x 50.5mm 29g no "up to" cycles listed
HR-3UTCEX(4B) "retail" 4 pk FUJITSU 1900/2000mAh 14.35mm x 50.4mm 27g packaging: 2100 cycles
HR-3UTHCEX(4B) "retail" 4 pk FUJITSU 2450/2570mAh 14.50mm x 50.4mm 30g packaging:
500 cycles

(AAAs listed were typically 700 and 780 mAh)