Olight i5R Review: The AA Flashlight I Underestimated

Introduction

A while back, a quick first look at the Olight i5R led to an early verdict that turned out to be wrong: that the rechargeable version was not worth the extra seven dollars over its non-rechargeable sibling. Spending more time with it tells a different story. This is a much better flashlight than first impressions suggested, and for anyone shopping for a AA-powered everyday carry light, it deserves a place on the shortlist.

Who This Flashlight Is For

Physically, the i5R is nearly identical to the previous-generation i5T. Same approximate weight, same pocket clip, and the only visual difference is a subtle patterning at the top of the head. Everything meaningful has changed inside, and that is where the value lives.

If you want a compact AA light that runs long, charges conveniently, and handles a variety of battery types without fuss, this one fits that brief well. Frequent flashlight users get the most out of it.

The Battery Is What Changes Everything

The i5R ships with a proprietary Olight battery that charges over USB Type-C. It is rated at 1,400 mAh and runs at 2.4 volts, which is unusual for this size class, where you normally see 1.5-volt disposable lithiums or 3.7-volt high-drain cells. That 2.4-volt chemistry is central to why this light behaves so differently from the old model.

It also works with ordinary AA batteries, including off-the-shelf disposable lithiums and alkalines, with no risk of damage thanks to the updated electronics. That flexibility is part of what makes it easy to live with.

Emitter and Beam Quality

The lens is unchanged, but the emitter is not. The previous generation used a cool white emitter around 6,500 Kelvin; the i5R moves to a neutral white around 5,000 Kelvin. In practice this is noticeably easier on the eyes and simply more pleasant to use for extended periods.

Runtimes That Stand Out

This is where the i5R separates itself. With an AA battery, high mode holds about 10 minutes before stepping down to 150 lumens, three times as long as the older model, with a total runtime of a little over two hours. Starting output on standard AAs is lower at around 225 lumens, but it sustains that output much longer.

With the included proprietary battery, high output starts at 350 lumens, holds for 10 minutes, and then runs at 150 lumens for roughly three hours total, about an extra hour over a standard AA. On the 15-lumen low setting, runtime jumps from 15 hours to 35 hours, more than double the previous generation.

Disposable lithiums behave surprisingly well too: starting output is just under 350 lumens, then it runs at 150 lumens for about five hours, which is remarkable endurance for a light this size. Alkalines stretch even further, with reported runtimes around 20 hours at reduced output.

Perhaps the strangest and best behaviour comes with the proprietary battery: instead of two modes, the light runs a single mode of roughly 200 lumens that never steps down. After 45 minutes it was still holding 200-plus lumens and was barely warm to the touch, suggesting the electronics are converting more energy into light rather than heat.

Things to Consider Before Buying

The mode spacing is the main compromise. There is no moonlight mode, and the low modes are 15 and 150 lumens, which some may find too coarse a spread. The neutral white emitter is around 5,000 Kelvin and is not the highest color rendering available, though it is a big step up from the previous cool white.

Buying Advice

The i5R comfortably earns a spot in a personal top ten of AA flashlights, held out of the top five only by the lack of a moonlight mode. The endurance alone puts it in rare company for its size.

For frequent flashlight users, this is an easy recommendation. Waiting for a sale is a sensible move, since the rechargeable version regularly drops to a very approachable price, and at that point the value becomes hard to argue with.

Conclusion

The early impression that the i5R was not worth the seven-dollar premium over its predecessor simply does not hold up. Between the nicer neutral white beam, dramatically longer runtimes, flexible battery compatibility, and unusually efficient output, the Olight i5R is one of the more compelling AA-powered flashlights available right now.