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- K40M vs E40R
Acebeam K40M vs Fenix E40R
What K40M does better (2) and where E40R wins (1) — every spec side by side.
Why is K40M better than E40R?
- Beam distance (ANSI FL1)500 m vs 242 m2.1×
- Peak beam intensity62,500 cd vs 14,640 cd4.3×
Why is E40R better than K40M?
- Maximum output3,000 lm vs 5,000 lm+67%
Specifications
Side by side
| Light output | ||
| Maximum output | 3,000 lm | 5,000 lm |
| Peak beam intensity | 62,500 cd | 14,640 cd |
| Beam distance (ANSI FL1) | 500 m | 242 m |
| Light source | LED | LED |
| LED & beam | ||
| LED maker | Cree | — |
| Number of LEDs | — | 4 |
| Colour temperature | — | 6,500K |
| Battery & charging | ||
| Battery | — | 21700 Li-ion |
| Battery capacity | — | 5,500 mAh |
| Maximum runtime | — | 89.5 h |
| Rechargeable | — | Yes |
| USB-C charging | — | Yes |
| Battery level indicator | — | Yes |
| Build & durability | ||
| Protection rating | — | IP68 |
| Water protection (IPx) | — | IPx8 |
| Magnetic tail / base | — | Yes |
| Size & weight | ||
| Length / height | — | 138 mm |
| Head diameter / width | — | 35 mm |
| Body diameter / depth | — | 26.4 mm |
| Weight | — | 220 g |
| Modes & features | ||
| Brightness levels | — | 5 |
| Switch | — | Rotary / scroll wheel |
| Strobe | — | Yes |
| Lockout | — | Yes |
| Mode memory | — | Yes |
