We take a look back at the Princeton Tec Impact XL dive light and how it did after many years of use. In this video, I’ll share my long-term review of this popular dive light, including its features, performance, and durability.
Last time, I damaged my LED drop-in module because it was rated only for up to two CR123 cells (6V). Two 16340 cells is already 8.4V. Now, I take a closer look at the damaged LED drop-in module and replaced it with a module rated for not just two but three 16340 cells. and that did the trick!
I see if it’s possible to replace CR123 (3.2V) lithium batteries with 16340 lithium-ion batteries (4.2V) on a SureFire G2 Nitrolon with an LED module. Do not try this on a halogen module!
 The Impact XL is an underwater flashlight that can also be used for above-water outdoor activities or, if you prefer, an above-water flashlight that can also be used for underwater activities. Per manufacturer specifications, it is waterproof up to 100m. It has a single Luxeon LED bulb which can throw 170 lumens of light as far as 50m. 4 AA batteries provide burn-time of up to 50 hours. Its tough plastic body is clad in molded rubber for grip as well as additional protection. A lanyard loop at the tail end allows for the attachment of a lanyard, wrist strap, or clip. The switch is a rotating bezel. It has enough rotations to minimize the chance of opening and flooding the batteries while underwater. However, you turn it in to activate so there’s a chance, albeit pretty small, that a push, say from water pressure, will move the head in and activate. Other than that, I’ve no real complaint about this light. Highly recommended.
The Impact XL is an underwater flashlight that can also be used for above-water outdoor activities or, if you prefer, an above-water flashlight that can also be used for underwater activities. Per manufacturer specifications, it is waterproof up to 100m. It has a single Luxeon LED bulb which can throw 170 lumens of light as far as 50m. 4 AA batteries provide burn-time of up to 50 hours. Its tough plastic body is clad in molded rubber for grip as well as additional protection. A lanyard loop at the tail end allows for the attachment of a lanyard, wrist strap, or clip. The switch is a rotating bezel. It has enough rotations to minimize the chance of opening and flooding the batteries while underwater. However, you turn it in to activate so there’s a chance, albeit pretty small, that a push, say from water pressure, will move the head in and activate. Other than that, I’ve no real complaint about this light. Highly recommended.
Rating: 4/5