The Fenix HP35R is a search-and-rescue headlamp, and it is sized like one: up to 4,000 lumens across spot, flood, and combined modes, twelve brightness levels, a built-in red safety light, and a quick-release battery case carrying two 5,000 mAh cells that also charges your phone. It is the most capable headlamp we sell and the one you buy when a night in the field is a real possibility. Here is what it does, the two versions, and who it is for.
Fenix HP35R specs
| Spec | Detail |
|---|---|
| Max output | 4,000 lumens (spot + flood) |
| Modes | Spotlight, floodlight, combined; four levels each (12 total); red safety light |
| Controls | Glove-friendly rotary and electronic switches |
| Battery | Quick-release case, dual 5,000 mAh cells; doubles as a power bank |
| Runtime | Up to 500 hours on low |
| Charging | USB-C |
| Protection | IP66, 2 m impact resistance |
| Versions | Standard, and SAR with flame-retardant rubber headband and NVG-shroud helmet mount |
| Price | $229.95 |
Spot, flood, and both
The HP35R has separate spot and flood emitters and lets you run either or both. Spot alone for scanning a hillside, flood alone for working close, both for the full 4,000 lumens when you need to light a whole scene. Each mode has four levels, and a rotary switch you can turn in gloves selects them, with an electronic switch for the rest. The red safety light on the back is for being seen, not seeing, and matters more than it sounds on a road or a rescue line at night.
The battery pack
Two 5,000 mAh cells ride in a quick-release case on the back of the head, which is where the weight belongs on a lamp this powerful. That pack gives up to 500 hours on the lowest level, and it doubles as a power bank: plug a phone or radio into it in the field. Charging is USB-C.
Standard vs SAR
Both versions have the same output and functions. The SAR version is slightly larger and adds a flame-retardant rubber headband and a helmet mount compatible with an NVG shroud. The standard version can also go on a helmet with Fenix's ALG-03 or ALG-04 bracket, sold separately. Buy the SAR if you wear a helmet with a shroud for work; buy the standard for everything else.
Durability
IP66 water resistance and two-meter impact resistance. It is heavier than a running lamp, by design, and not the lamp for a jog. For that, the HM65R-T V2.
Who should buy it
Search and rescue, fire, utility, and anyone who needs a headlamp that can run all night, light a whole scene, and charge a radio. It is overkill for a walk with the dog, and that is the point.
Frequently asked questions
How bright is the Fenix HP35R?
Up to 4,000 lumens with spot and flood combined.
What is the difference between the HP35R and HP35R SAR?
Same light. The SAR is slightly larger with a flame-retardant headband and an NVG-shroud helmet mount.
Can it charge my phone?
Yes. The dual-cell battery case doubles as a power bank.
How long does it run?
Up to 500 hours on the lowest setting.
Is it waterproof?
IP66 rated, with two-meter impact resistance.
The bottom line
The Fenix HP35R is the headlamp you buy for the night that goes wrong. Two beams, twelve levels, five hundred hours, and a battery that charges your phone.
Related reading
Fenix HM71R headlamp review
Fenix HM65R-T V2 headlamp review
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