About this deal
The first method I'm going to show is using Isopropyl. Isopropyl is what is known as a synthetic alcohol and can be found in things like shaving creme, antiseptic and industrial applications.
We switch on each torch to its brightest setting and record how well it lights up a set area at distances of 5 metres, 10 metres, 25 metres, 50 metres, and 75 metres.
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We also use Cambridge gloves to investigate any particular challenges users with limited hand movement might find with the torches but so far have found none are extra difficult.
We charge up the rechargeable torches and use fresh batteries for those that require them, and then switch them onto their brightest settings to time how long they last before running out of battery or having significantly reduced brightness.
Dealing With Sticky Rubber
We subject each torch to a heavy shower for several minutes and inspect the lamps and battery casings for water ingress. We also compare how widely and evenly all the torches we test spread light at a distance of 10 metres.