Hi, just FYI, here’s the previous thread on this topic:
Copied from that thread, here are some measurements. Sorted by length:
- Nitecore HC50: 86.2mm x 33mm (max) x 29mm (min)
- DQG Tiny 18650 II: 87mm x 25mm (head) x 22mm (body)
- ZL SC62: 96.5mm x 24.4mm (head) x ??mm (body)
- Brass beauty: 97mm x 21mm
- Roche F6: 112mm x 27.5mm
- S-mini: 114mm x 22mm
- Convoy S4: 115mm x 23mm
- Convoy S3: 115mm x 24mm
- Roche F12: 115mm x 24mm
- Convoy S7: 116mm x 23.6mm
- Ultrafire HD2011: 117mm x 24mm
- Solarforce T1: 123.5mm x 24mm (head) x 22mm (body)
- Convoy S2: 124mm x 24mm
- Solarforce L2m: 136mm x 32mm (head) x 25.4mm (body)
These are all “small” 18650 lights, but the definition of small seems to vary quite a bit.
If I sort them by approximate volume (length * head diameter * tail diameter), the brass beauty comes out as the smallest (at 42.7 cm^3) and the HC50 is the second-biggest (at 82.5 cm^3). The L2m is, of course, the biggest (110.5 cm^3).