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[mr.wilson]

Originally Posted by fkshiu

Has anybody tested how long these puppies last before the batteries die?

Someone told me once but I forgot. It was well over 12 hours though. This model may last longer than the B11. http://www.bigalsonline.com/BigAlsUS...ybackupairpump

This one claims about 72 hours of battery life (two x D). http://www.seaquestmarine.com/Life_A...p/won_la50.htm