Black Diamond Cosmo Headlamp vs Black Diamond Storm+ Headlamp
Black Diamond Cosmo Headlamp ($44.95) vs Black Diamond Storm+ Headlamp ($99.95) — side-by-side specs, weight, pros and cons to help you pick the right headlamp.
Spec-by-spec
| Spec | Black Diamond Cosmo Headlamp | Black Diamond Storm+ Headlamp |
|---|---|---|
| Price | $44.95 | $99.95 |
| Weight | 88g | 114g |
| Max output | 350 lumens | 750 lumens |
| Max burn time | 200 hours | 80 hours |
| Power | 3 x AAA or BD 1500 rechargeable (sold separately) | — |
| Waterproofing | IPX7 | IP67 |
| Charging | USB-C with optional BD 1500 battery | — |
| Weight | 88 g (Black Diamond spec) | 114 g (Black Diamond spec) |
| Battery | — | Serviceable 2200 mAh Li-ion, USB-C |
| Modes | — | RGB, adjustable brightness, SOS, strobe |
Pros & Cons
Black Diamond Cosmo Headlamp
- Light at 88 g
- Dual fuel: AAA or rechargeable pack
- Dimmable red LED
- IPX7
- Rechargeable battery sold separately
- 350 lumens is modest
- Dual-button interface takes a moment to learn
- No lockout listed on the spec sheet
Black Diamond Storm+ Headlamp
- 750 lumens in 114 g
- IP67 dust and water sealing
- Digital lockout prevents pack-burn
- Serviceable rechargeable battery
- Price is high for a headlamp
- Battery capacity is modest for the output
- Two-button control with many modes
- Heavier than the Cosmo
Black Diamond Cosmo Headlamp is the better value at $44.95. Both are part of our curated headlamp index — tap through to check current pricing.