Originally Posted by
nimdabew
I take battery estimates with a grain of salt. I have an MRO with its original battery that has been on constantly since April 2016 at setting 4. I can only surmise that it is a logrythmic scale on brightness settings and the battery on setting 4 will be dead around 2 years. I will see soon enough.
From Trij FAQ:
The MRO battery should last for 5 years of continual use at setting “3” (5 of 8). When left on at the brightest setting (“6”), the battery should last around 25 days. Note that extended use in extreme temperatures – either cold or hot – may reduce the battery life considerably.
Also, if you are worried about the battery dying, and you are putting this on a duty rifle, then change the battery on your birthday and half birthday. I would put it on a backup or fun rifle only, but that's just me.
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