Migs Posted December 18, 2013 Share #1 Posted December 18, 2013 Advertisement (gone after registration) Friends: What is the reasoning behind the 80% led on the charger? If the battery is full then why mislead with 80% led lit? Plus sometimes I charge a battery and both leds blink crazy for a while? Is there something wrong with my battery? Thanks amigos Migs Quote Link to post Share on other sites More sharing options...
Advertisement Posted December 18, 2013 Posted December 18, 2013 Hi Migs, Take a look here What is the reasoning behind the 80% led on the charger?. I'm sure you'll find what you were looking for!
sanyasi Posted December 18, 2013 Share #2 Posted December 18, 2013 I assume it is there in case you are in a hurry and can't wait for a full charge. It let's you know that you nevertheless have a fair amount of power supply for the camera. It is a source of information. 6 Quote Link to post Share on other sites More sharing options...
Hannes Lummes Posted December 18, 2013 Share #3 Posted December 18, 2013 Yeah, I got to agree that the logic is misleading. The 80% light should turn of when the battery is full. If there were more lights, like for example 50%, 80% and full, they would better form a "bar graph" and could stay on without causing head scratching. But OTOH, Leica does have bigger issues to deal with. Quote Link to post Share on other sites More sharing options...
NikonJeff Posted December 20, 2013 Share #4 Posted December 20, 2013 (edited) Yeah, I got to agree that the logic is misleading. The 80% light should turn of when the battery is full. If there were more lights, like for example 50%, 80% and full, they would better form a "bar graph" and could stay on without causing head scratching. But OTOH, Leica does have bigger issues to deal with. Like the lack of a "Calibrate" or "Refresh" button/mode on their chargers… Just to add another to the list Edited December 20, 2013 by NikonJeff Quote Link to post Share on other sites More sharing options...
jaapv Posted December 20, 2013 Share #5 Posted December 20, 2013 When it is 100% full it is certainly 80% full as well, so the LED should be on. You failed your German logic test… 4 2 Quote Link to post Share on other sites More sharing options...
Jeff S Posted December 20, 2013 Share #6 Posted December 20, 2013 When it is 100% full it is certainly 80% full as well... Well, if it's at least 80% full, then isn't it also at least 0% full? Jeff 4 Quote Link to post Share on other sites More sharing options...
pop Posted December 20, 2013 Share #7 Posted December 20, 2013 Advertisement (gone after registration) Well, if it's at least 80% full, then isn't it also at least 0% full? Jeff Yes, that's why the black LED is lit by that time as well. 2 1 Quote Link to post Share on other sites More sharing options...
PeterP Posted December 20, 2013 Share #8 Posted December 20, 2013 Well the 80% light gives you a sense of progress don't it, that said the battery is probably also very usable at that point. So if you are in a hurry, or charging in you car and cannot keep it running any longer - voilà! Some of my chargers blink at different rates to show charge, my 1DX charger has LEDs marking progress (with a LED for 80% I might add). Quote Link to post Share on other sites More sharing options...
chrism Posted December 21, 2013 Share #9 Posted December 21, 2013 I bought two new batteries recently, thinking that my two current spares are getting old, and the batteries in the MM and the M9, whilst younger, still date to the time of the cameras' introductions. I ordered them online from a large photo dealer in Toronto who shall be nameless. The familiar silver boxes arrived, labelled "M8 Battery". So much for their turnover of Leica stock. If they won't take a charge they will be going back. Chris Quote Link to post Share on other sites More sharing options...
jcraf Posted December 21, 2013 Share #10 Posted December 21, 2013 I bought two new batteries recently, thinking that my two current spares are getting old, and the batteries in the MM and the M9, whilst younger, still date to the time of the cameras' introductions. I ordered them online from a large photo dealer in Toronto who shall be nameless. The familiar silver boxes arrived, labelled "M8 Battery". So much for their turnover of Leica stock. If they won't take a charge they will be going back. Chris I reckon that they have just never got round to changing the packaging label. As you're no doubt aware, the part number (14 464) is the same for M8/M8.2/M9/M9-P/M-E and MM. I bought one last week from my dealer for my MM, box labelled 'Rechargeable Battery M8'. Seems fine, holds charge etc. But I agree, no apparent way to determine age, and they do slowly degrade from the date of manufacture which I guess is your concern. Quote Link to post Share on other sites More sharing options...
edwardkaraa Posted January 3, 2014 Share #11 Posted January 3, 2014 The manufacturing week and year are imprinted on the battery itself. Quote Link to post Share on other sites More sharing options...
jip Posted January 3, 2014 Share #12 Posted January 3, 2014 Like the lack of a "Calibrate" or "Refresh" button/mode on their chargers… Just to add another to the list U don't need Calibrate or Refresh modes with modern battery's... this was something from the NIHM battery era. 1 Quote Link to post Share on other sites More sharing options...
zeitz Posted January 4, 2014 Share #13 Posted January 4, 2014 Jip, not exactly true. Nikon retains the calibration function for its Lithium-ion DSLR batteries, such as the D4. Calibration assures that the charger and the camera read the battery state correctly. I've had to use calibration a couple of times on my D2x. Quote Link to post Share on other sites More sharing options...
jaapv Posted January 4, 2014 Share #14 Posted January 4, 2014 On a Li--Ion battery the main use of a full (well, not totally full, draining it to 0% can kill it and will certainly shorten the lifespan considerably.) discharge is to reset the charge level readout. The longest lifespan can be obtained by never letting the charge level drop under 20%. The batteries have no memory effect like NiCads. Quote Link to post Share on other sites More sharing options...
DigitalHeMan Posted January 4, 2014 Share #15 Posted January 4, 2014 Apologies for piggybacking off of this thread, but my question is related, and rather than start a new thread...... Recently I have charged two batteries - at the time of charge the first one was around 20% charged according to my M-E, and the other one was just under 50% charged. However both of them were showing as 80% charged as soon as I put them in the charger. Is there any reason for this? Faulty battery/charger? Both batteries are fairly new and probably haven't been charged more than ten times each..... Quote Link to post Share on other sites More sharing options...
jdlaing Posted January 4, 2014 Share #16 Posted January 4, 2014 Apologies for piggybacking off of this thread, but my question is related, and rather than start a new thread...... Recently I have charged two batteries - at the time of charge the first one was around 20% charged according to my M-E, and the other one was just under 50% charged. However both of them were showing as 80% charged as soon as I put them in the charger. Is there any reason for this? Faulty battery/charger? Both batteries are fairly new and probably haven't been charged more than ten times each..... Was the 80% light on solid or flashing? Quote Link to post Share on other sites More sharing options...
Einst_Stein Posted January 4, 2014 Share #17 Posted January 4, 2014 Yeah, I got to agree that the logic is misleading. The 80% light should turn of when the battery is full. If there were more lights, like for example 50%, 80% and full, they would better form a "bar graph" and could stay on without causing head scratching. But OTOH, Leica does have bigger issues to deal with. The battery will never reach 100% full. Whatever the circuits thinking it is full, it could be 99%, 97%, 90%, ..., This also depends on the aging of the battery. For practical reason, 80% is just that magic number, meaning the battery is "almost full". Albeit it's a very conservative mark. The actual fullness should be somewhat higher than that, Quote Link to post Share on other sites More sharing options...
DigitalHeMan Posted January 4, 2014 Share #18 Posted January 4, 2014 Was the 80% light on solid or flashing? Solid 1 Quote Link to post Share on other sites More sharing options...
jip Posted January 5, 2014 Share #19 Posted January 5, 2014 It's a fast charger, like most devices these days (think of iphones, ipad, laptops, smartphones etc etc.) They charge up til 70-80% in a short time... then the last 30-20% takes just as long as the whole first 70-80%... meaning if ur in a hurry knowing its at 80% is a good thing. Quote Link to post Share on other sites More sharing options...
NickyB Posted March 15, 2023 Share #20 Posted March 15, 2023 When the battery is full does it show no lights at all? Quote Link to post Share on other sites More sharing options...
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