It goes thru batteries like crazy so I have a rechargeable USB-output power unit (for running a laptop, recharging phones, etc) that I mainly use. But it will run on AAs you just need to have a lot if you plan a long day at the range with it.
Clint -
As it turns out, the external battery pack is an attractive feature for me. One reason my
ProChrono was having difficulty was a low battery. (No "Low Battery" indicator.
) So, the only option with most any chrono is to keep a pile of batteries around because they all operate on 9V. It appears
LabRadar is the only chrono that works on a voltage other than 9V, and thus the only one that accepts external power.
I see that LabRadar sells their own external battery pack. And one review inferred it had to be
that particular battery pack. But if it goes in through a Mini-USB, then it would almost need to accept ANY phone charging battery pack.
So please tell me about your external power pack. Is it the official LabRadar pack, or a generic lithium battery ?