Claris A2 Pro Review: A 1,000-Lumen Flashlight That Runs on Three Battery Types

Introduction

The Claris A2 Pro is a 1,000-lumen flashlight with an unusual pitch: it can run on three different battery types. Depending on what you have on hand, it accepts AAA cells, an 18650, or a 21700, which in theory makes it a flexible choice for an emergency kit. In practice, that flexibility comes with compromises worth understanding before you buy.

This is not a small light. At roughly six and a quarter inches long, it needs the extra length to accommodate a 21700 cell, and the fit and finish look reasonably solid for the class.

What Is the Claris A2 Pro?

In the box you get the flashlight itself, a USB-C recharging cable with a nice silicone cover over the port, and a lanyard with spare O-rings. The included battery is a 21700 rated at 4,000 mAh, which is on the lower side when many modern 21700 cells hold 5,000 mAh.

The user interface is simple. It uses an electronic switch and has mode memory, so the light comes back on at whatever brightness it had when you turned it off. Output steps down in a low, high, medium pattern, and switching between levels is easy. Holding the switch for 0.8 seconds locks the light out electronically, and for long-term storage you can also unscrew the tailcap for a mechanical lockout, which is the method the manual recommends.

Beam Quality and the Zoom Trade-Off

The defining hardware feature is a spherical lens that concentrates the beam and keeps the output even along its path. The zoom function lets you focus the beam into a very tight pattern, so you can use the A2 Pro for close-up work or for reaching far into the distance, similar to a dedicated thrower with a well-defined hotspot.

That zoom capability is also the source of its biggest weakness. Because the moving lens assembly cannot be fully sealed, the light carries only an IPX4 rating. That is fine for rain, but it is not waterproof, and submerging it even briefly is not something you can count on it surviving. Marketing that calls a light waterproof while listing IPX4 is worth being skeptical about.

Three Battery Options, With Strings Attached

With the 21700 installed, the A2 Pro reaches its full 1,000-lumen maximum. Swap in an 18650 using the included adapter and the ceiling drops to 700 lumens, a difference that matters far less in everyday use than the logistics of making the swap at all.

That is where the multi-fuel design gets awkward. To run AAA cells or an 18650, you need to carry specific plastic adapter components. The plastic is necessary so the parts are non-conductive, but it also makes them fragile in a bag, and losing one piece means losing that fuel option entirely. Some competing lights, such as the Streamlight ProTac 1L-1AA, accept multiple battery types natively while staying waterproof, with no extra parts to keep track of.

Things to Consider Before Buying

The multi-fuel concept fits the emergency-preparedness use case well: in a real emergency, you may not know whether you will have access to power for recharging, or which spare cells you will find. Being able to burn whatever is available is genuinely appealing.

The problem is that many real emergencies happen around water, and a light you cannot trust when wet is a poor fit for exactly that scenario. Add the loose adapter components and the plastic parts that can break in a bag, and the practical value of the flexibility shrinks.

Buying Advice

If you specifically want a zoomable, multi-battery flashlight and you will use it in dry conditions, the A2 Pro is a genuinely interesting design with USB-C charging and a simple, mode-memory interface. If waterproofing matters to you at all, look elsewhere, because IPX4 will only hold up to rain.

Conclusion

The Claris A2 Pro deserves credit for trying something uncommon: a bright, zoomable light that runs on three battery types with USB-C recharging. But the required adapter pieces, the fragile plastic components, and the IPX4 rating undercut the very emergency-readiness story this light seems built for. It is an interesting experiment rather than an easy recommendation.