For these kinds of numbers they tend to use 1000mAh for AA cell, what used to be call 'heavy duty' and this radio is 20-25mA, so you are looking at easily at le

For these kinds of numbers they tend to use 1000mAh for AA cell, what used to be call 'heavy duty' and this radio is 20-25mA, so you are looking at easily at least 70 hours on alkaline cells. http://ukradio.info/SRF-59/ http://ukradio.info/SRF-59/