Beam Comparison - Headlamp


Battery Life vs. Beam Distance - the above graph shows how beam distance at the brightest setting degrades as battery life runs down. We use the ANSI FL-1 battery run-time spec, which says run-time for the high mode is finished when brightness degrades 90% from its initial value. The ANSI standard is more stringent than what headlamp manufacturers use. They consider high mode run-time still OK so long as there's enough battery to produce light as bright as a candle placed 2 meters away (0.25 lux). We think the manufacturer's approach is deceptive and misleads consumers to believe the high output mode produces a long-distance beam much longer than it actually does.

                                       Black Diamond Icon: we measured the maximum beam distance as 82 meters and the ANSI battery run time for the high setting as 9.4 hours.
                                       Coast HL7: we measured the maximum beam distance as 131 meters and the ANSI battery run time for the high setting as 3.4 hours.

Side-by-Side Comparison


Rank #2 #1
Product
Black Diamond Icon
Read the Review
Winner of our Editors' Choice award  the Coast HL7 impressed us with a combination of high-power beam  great close-proximity lighting  relatively light weight  and low-price.
Coast HL7
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Awards    Editors' Choice Award 
Price $74.96 at Backcountry
Compare at 5 sellers
$29.53 at Amazon
Overall Score 
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72
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Pros Bright, wide spotlight, clear/smooth optics, long battery life, robust designIncredible brightness and beam control, great value
Cons Heavy, bulky, and expensiveShort battery life
Weighted Metrics Black Diamond Icon Coast HL7
Trail Finding - 20%
10
0
9
10
0
8
Close Proximity - 15%
10
0
6
10
0
8
Battery Life - 15%
10
0
8
10
0
5
Brightness - 25%
10
0
7
10
0
9
Weight - 15%
10
0
2
10
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4
Ease Of Use - 10%
10
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8
10
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8
Product Specs Black Diamond Icon Coast HL7
Measured Max Beam Distance 82 m 131 m
Claimed Distance 100 m 152 m
Measured High Mode Run-time (ANSI) 9.4 hrs 3.4 hrs
Claimed High Mode Run-time 75 hrs 3.8 hrs
Claimed Low Mode Run-time 175 hrs 80 hrs
Weight 232 g, 8.2 oz 128 g, 4.5 oz
Battery Type 4 AA 3 AAA
Water Resistance IPX 7 (waterproof to 1m) Water-resistant
Manuf Claimed Lumens 320 lumens 196 lumens
Beam Type Flood/Spot Flood
Red Light Yes no
On/Off Switch Lock Yes No