Black Diamond Astro 300 Headlamp
- 300 lumens maximum output
- 3 AAA batteries
- BD 1500 rechargeable battery compatible, sold separately
- Full strength, dimming and strobe modes
- Brightness memory, one button control
Last refreshed Sep 10, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A compact AAA headlamp with dimming, strobe and brightness memory that also takes a rechargeable pack sold separately. Beam distance and runtime are not given.
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ASIN: B0H5RK4Z3LModel: Astro 300Category: Headlamps
Colors Available
Sizes Available
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Overview
A hiker or camper who wants a low-profile light gets a one-button headlamp here, held by an adjustable headband. It runs on AAA cells and offers full strength, dimming and strobe settings.
The compact build and brightness memory make for easy use on a trail or at a campsite, and the rechargeable option adds flexibility. The listing leaves out beam distance, runtime and a water rating.
Who it's for
A casual hiker, runner or camper who wants an everyday headlamp on easy to replace batteries will find the controls simple. Buyers who need published runtime or waterproof details should look at another listing.
Pros and cons
- Rechargeable pack compatible
- Beam distance not listed
- Rechargeable pack sold separately
- Runtime figures missing
Performance notes
Output depends on the mode chosen and on how fresh the batteries are, with dimming used to stretch the cells. A one-button interface cycles through the modes, and brightness memory returns the lamp to the last setting. Adding the rechargeable pack changes the power source rather than the light itself.
Specifications
| Brand | BLACK DIAMOND |
|---|---|
| Model | Astro 300 |
| Capacity & performance | |
| Light Output Maximum | 300 lumens |
| Power & efficiency | |
| Power Source | 3 AAA batteries |
| Battery Description | BD 1500 Li-ion battery and charger, sold separately |
| Construction & materials | |
| Color | BD Graphite |
| Compatibility & installation | |
| Mounting Type | Adjustable headband |
| Other details | |
| Light modes | Full strength, dimming, strobe |
| Number of Batteries | 3 |
| Controls | One button, brightness memory |
Frequently asked questions
How do I power the Black Diamond Astro 300?
It runs on 3 AAA batteries. It is also compatible with the BD 1500 rechargeable Li-ion battery and charger, which are sold separately.
What light modes does the Astro 300 have?
Full strength, dimming and strobe, with a brightness memory that recalls the last level.
Is the Astro 300 rechargeable out of the box?
No. It is AAA powered, and the rechargeable battery and charger are sold separately.
Is the headband adjustable?
Yes. The listing describes an adjustable headband for a comfortable fit.