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<blockquote data-quote="Pdvdh" data-source="post: 1375749" data-attributes="member: 4191"><p>Not sure why my AA battery use was so limited. The batteries were out of the box new. It was 30*F on my first use. That may have cut into the Duracells? Alkaline batteries don't perform great in colder temperatures.</p><p></p><p>Dunno... I had the unit programmed to remain armed for 80 seconds. I fired 14 shots. I probably also armed the unit an additional 3-5 times, as I was learning on-the-job while reviewing the owner's manual, etc... I armed it and on the 14th round, the unit recorded that bullet velocity, and then the screen said unable to arm due to low battery power. Received a message that said to plug in a USB power pack for additional use - which I did. I bought the USB power pack at the same time I purchased the LabRadar. Glad I did or my first outing would've been pretty limited.</p><p></p><p>Another reason I think the limited battery life may have been cold weather related, is after removing the Duracell batteries at the house, I checked their remaining voltage after they had come to room temperature and all the batteries read around 1.45 volts - which I thought should have been sufficient. When new, I think they read 1.55 to 1.65 volts. Anyhow, I did not test the battery voltage while they were still chilled to 30*F, so they may have been unable to function further due to the cold outdoor temps.</p><p></p><p>I finished up using the USB Lithium power pack, and their still seemed to be plenty of power remaining. Like 4 of the 5 indicator leds were lit up. The powering solution is straightforward. Now I'm impatiently awaiting the Bluetooth App option for remote arming. That will be a VERY nice upgrade.</p></blockquote><p></p>
[QUOTE="Pdvdh, post: 1375749, member: 4191"] Not sure why my AA battery use was so limited. The batteries were out of the box new. It was 30*F on my first use. That may have cut into the Duracells? Alkaline batteries don't perform great in colder temperatures. Dunno... I had the unit programmed to remain armed for 80 seconds. I fired 14 shots. I probably also armed the unit an additional 3-5 times, as I was learning on-the-job while reviewing the owner's manual, etc... I armed it and on the 14th round, the unit recorded that bullet velocity, and then the screen said unable to arm due to low battery power. Received a message that said to plug in a USB power pack for additional use - which I did. I bought the USB power pack at the same time I purchased the LabRadar. Glad I did or my first outing would've been pretty limited. Another reason I think the limited battery life may have been cold weather related, is after removing the Duracell batteries at the house, I checked their remaining voltage after they had come to room temperature and all the batteries read around 1.45 volts - which I thought should have been sufficient. When new, I think they read 1.55 to 1.65 volts. Anyhow, I did not test the battery voltage while they were still chilled to 30*F, so they may have been unable to function further due to the cold outdoor temps. I finished up using the USB Lithium power pack, and their still seemed to be plenty of power remaining. Like 4 of the 5 indicator leds were lit up. The powering solution is straightforward. Now I'm impatiently awaiting the Bluetooth App option for remote arming. That will be a VERY nice upgrade. [/QUOTE]
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