![]() When you self-test every time you turn the unit ON, you read the remaining charge value in percentage. Not a bad thing at all, except for a beacon. BUT - they last and last and last and then, instead of more slowly losing their charge, they drop right off to patooey. but I use them for everything else.īecause, lithium batteries are great and last a lot longer, especially in the cold. Why I don't ever use lithium in a beacon. Batteries are cheap and they last a while in there. I don't run anything but alkaline in my beacon, and replace them when it gets <75%. When the slope of that line exceeds some amount, the battery's "dead". ![]() Load the battery down to 100mA, 200mA, 500mA and take voltage measurements. Just putting a voltmeter across an unloaded battery will give you a good voltage measurement because the impedance of the meter is so high. Drop in a set of "Jing-Zao" or similar, probably won't last as long and might leak.īest way to test a battery is to chart the voltage to current. As long as you go with a name-brand battery you're probably OK. Occasionally, devices won't work at all (Voltage changes too much with load).īetween different brands of alkaline. Most of the time the only thing you'll notice switching between them is the battery meter reads different. The current-vs-voltage curves are different betwteen alkaline, NiCd, NiMH, LiIon, LiPoly, gel cell, lead-acid, etc.
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