Ay Up V4 Adventure Light Review

Lights Shootout Pro Reviews

Reviewed by Brian Mullin http://www.gramslightbikes.com/

I have been enjoying the Ay Up V4 Adventure lighting system, which has excellent batteries, innovative lights and great mounting systems. Its entities are lightweight, compact, easy to use, and the kit comes with just about every accessory required, all packed into a nice plastic pod. The helmet system is a breeze to use, and the trick twin lights can be adjusted independently giving one a variety of usages. The handlebar system is sturdy, and it’s easy to pop the light and battery on and off the bike as needed.

Ay Up V4 Adventure
The kit comes with almost every imaginable item required, from the helmet and handlebar mounts, to a nifty headband, three batteries, two twin lights, a home and car charger and red colored caps for the lights, etc., all enclosed in its bright orange plastic pod.


Here is a breakdown of the kit:

  • 2 x Lights
  • 2 x Handlebar mounts
  • 4 x Light mounting bands
  • 1 x Gecko Light kit
  • 1 x Gecko battery kit
  • 2 x HALF EPIC high / low & flashing batteries
  • 1 x Half Epic battery pouch
  • 1 x Half Epic lock down strap
  • 1 x EPIC high / low & flashing battery
  • 1 x Epic battery pouch 1 x Epic lock down strap
  • 1 x 110V – 240V Adaptor
  • 1 x Dual Channel Lithium Polymer Charger
  • 1 x 12 Volt Adaptor (Cigarette Lighter Adaptor)
  • 1 x Extension cable 1200mm long, enables battery to be placed in backpack or pocket
  • 1 x Handlebar rubber packer kit to suit Diameters 25mm & 32mm bars
  • 1 x Bundle of 4 cable ties
  • 1 x Headband kit
  • 2 x Red Saxon caps
  • 1 x AY POD case
  • 1 x Wrist band
  • Documentation – instructions


The kit comes with three Lithium Polymer batteries, two 1/2 Epic 1250 milliampere-hour (mAh) and one Epic 2600 mAh, and each is rated at 7.4 Volts. The batteries have a nice soft bright orange rubber cover over the switch, which itself has a positive feel when clicking. The batteries have four modes, High, Low, Flashing and Off, and they are easy to engage following a simple pattern. From the Off mode, click once for High, and again for Low, and you cycle between them if needed, and then hold the switch for 2 seconds to turn Off. To engage the Flashing mode, just hold the switch for 2 seconds while in Off, and click again to turn Off. I really liked that there wasn’t a Flashing mode when cycling between High and Low. Battery life was pretty consistent, and for the 1/2 Epic I got 3 hours on High and 6 hours on Low, while the Epic gave me 6 hours on High and 12 hours on Low. The kit comes with a nice battery charger that can do two batteries at once, and in addition it comes with a car cigarette lighter plug, for on the road charging. Charging took around 3-5 hours each, depending on how far they were drained and whether it’s a 1/2 Epic or Epic battery, the latter taking longer to charge.

Battery Life Testing (estimated output):
1/2 Epic – 3 hours full power, 1 hour partial power (50-70%)
1/2 Epic – 4 hours full power, 2 hours partial power (50-70%)
Epic – 7 hours full power, 2 hours partial power (50-70%)

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About the author: Brian Mullin

Brian likes to push the limits in all the sports he obsesses in, whether it's mountain biking, whitewater kayaking, skiing, or sport climbing. He takes those same strengths and a good dose of insanity to his reviewing and writing on mountain biking products, creating technical, in-depth articles. Whenever he's not on the bike, he might be found watching MotoGP racing, otherwise look for him out on the trail.

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  • Mark Ferris says:

    I have had a set of Ay-ups in various forms for what must be 4 years now. I have 3x lights and a silly amount of batterys and chargers etc. I use the lights on road commuting (country lanes and city), off road MTBing, and with the headband everything from DIY when you need a hands free light, putting the trash out, working in the dark in the garden, and taking my dog out walking in the depths of night. In all the best lights ever! I know they are not the most powerfull but the ease of use and flexibility is ace.

    Off out now to walk the dog (midnight and raining in Surrey) using my Ay-up lights on a headband :-)

    Mark Ferris

  • Paul says:

    Meh. Used to be at teh top and now overpriced and under powered. These suit adventure runners better than riders.

  • Brian Mullin says:

    The current LED’s are under powered, but their new versions are supposed to have a 40% increase (the specs are usually accurate), which moves them up slightly in the ranks, the pricing isn’t that bad when you consider you get an entire kit, you get 3 batteries, 2 lights, 2 mount systems and the headband, etc. Great kit for the adventure racer, and riders that frequent the woods and tight singletrack.

  • Dave, Edinburgh says:

    Underpowered? Has the darkness got darker where you’re riding? :|

    I’ve had Ay-Ups since 2008, they’re still good for 40mph descents on the road with the original batteries. I don’t necessarily think they’re the best, but, well, I can’t go much faster than that anyway!

    • David Whitmon says:

      I agree Dave. I run them on my Velomobile and I can cruise at 35 mph on the flats. It doesn’t take much of descent for me to hit 40 to 50 + mph.

  • Brian Mullin says:

    It is only in direct comparison to the competition, you get spoiled and expect more from the light output.

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