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PR1aW Battery Life at 100 mW
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Does anyone have a feeling for Alge PR1aW photo cell battery life when the radio is at full power (100mW)?

The manual has a chart which states ~28h operation for NiMH 2700 mAh batteries, but I suspect that it's for a radio power of 10mW.

Thanks.


Mark Jacunski
Cochran's Ski Club
 
Posts: 34 | Location: Colchester, VT | Registered: September 16, 2013Report This Post
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This is a re-post from another thread, but it really belongs here.

Actually, I realized that by doing a little algebra with the stated battery times with and without the radio, I can arrive at the answer.

Battery life for 2700 mAh NiMH batteries with 1 pulse/minute at -20C (-4F):

No Radio: 57h (from manual)
Radio at 10 mW: 28h (from manual)
Radio at 25 mW: 16h
Radio at 50 mW: 9h
Radio at 100 mW: 5h


Mark Jacunski
Cochran's Ski Club
 
Posts: 34 | Location: Colchester, VT | Registered: September 16, 2013Report This Post
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That's not enough battery life for comfortable buffer. And based on optimal condition new NiMH batteries too, no doubt. This and the other post about spotty wireless connection and attendant missed pulses make me glad we put in the big effort over three summers to put in buried dedicated wiring to all our timing locations (16 in all) spread over technical and speed courses. If we were doing lots of low-key club or recreational group events, I could see the wireless system as being worth it.


Apex Ski Club
Penticton, BC
 
Posts: 46 | Location: BC, Canada | Registered: May 02, 2010Report This Post
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