PaulJohn Posted February 24, 2016 Share #1 Posted February 24, 2016 Advertisement (gone after registration) Most trips out with my M leave me with over 50% left on my battery. Should I try to let it run down more before recharging? I thought I heard somewhere that the battery condition will be better if it is allowed to empty before recharge. Obviously I don't wasn't to risk running out of battery and I don't want to carry a spare just for the purpose of keeping my batteries in slightly better condition. When do you charge yours? Link to post Share on other sites More sharing options...
Advertisement Posted February 24, 2016 Posted February 24, 2016 Hi PaulJohn, Take a look here Battery charging. I'm sure you'll find what you were looking for!
jaapv Posted February 24, 2016 Share #2 Posted February 24, 2016 No - it is best for Li-Ion batteries not to discharge the completel; .they will have the longest life if they are partially empty before recharge as often as possible. The thing you heard applied to NiCad batteries, those have a memory effect, but is notapplicable to your Mbatteries. Link to post Share on other sites More sharing options...
masjah Posted February 24, 2016 Share #3 Posted February 24, 2016 No - it is best for Li-Ion batteries not to discharge the completel; .they will have the longest life if they are partially empty before recharge as often as possible. The thing you heard applied to NiCad batteries, those have a memory effect, but is notapplicable to your Mbatteries. Although the user manual does suggest doing a total discharge - in the camera - every 25 cycles. Honestly don't know why they say this. Link to post Share on other sites More sharing options...
prk60091 Posted February 24, 2016 Share #4 Posted February 24, 2016 most Li-on batteries should be put on the charger before they hit the 40% mark (to maintain them optimally) the total discharge is recommended to "retrain" the computer in the batteries. I have done this on all my iDevices and cameras for several years now. I am NOT an engineer nor am I chemist-- but I read alot-- this is the distillation of my readings. YMMV Link to post Share on other sites More sharing options...
Steve Ricoh Posted February 25, 2016 Share #5 Posted February 25, 2016 I was informed 20 a 80% was optimum to prolong battery life (but in doing so you're subjecting the battery to an increased number of charge / discharge cycles - swings and roundabouts, possibly). I wonder if this is why the Leica supplied charger indicates when 80% is reached? Link to post Share on other sites More sharing options...
Herr Barnack Posted February 25, 2016 Share #6 Posted February 25, 2016 I recharge my batteries (I currently have two) when they get between 40% and 50%. Once in a great while, one will get down to 30-35% before I charge it. JMHO, but I think giving the batteries some variety in when they are charged is a good idea. Link to post Share on other sites More sharing options...
jaapv Posted February 25, 2016 Share #7 Posted February 25, 2016 Advertisement (gone after registration) http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries Link to post Share on other sites More sharing options...
Steve Ricoh Posted February 26, 2016 Share #8 Posted February 26, 2016 Interesting stuff from the 'battery university' - been better still if they had described the electrochemistry and the change in charge retention with less than ideal charging/discharging. Link to post Share on other sites More sharing options...
jaapv Posted February 26, 2016 Share #9 Posted February 26, 2016 They do - the site is quite extensive with various articles. Scroll all the way down in the index. Link to post Share on other sites More sharing options...
bencoyote Posted February 26, 2016 Share #10 Posted February 26, 2016 the total discharge is recommended to "retrain" the computer in the batteries. I have done this on all my iDevices and cameras for several years now. I'm not going to disagree with you too much but the design spec for iDevices is about 2 years. They optimize simplicity of operation vs longevity of the battery. With Leica I keep coming back to the concept of sufficiency. How long do you really need a Lithium Ion battery to last? It probably will last 300 or so cycles and maybe a few more if you occasionally discharge reasonably low and almost always charge to only 80%. Even with my most extreme photographic aspirations it gets much less of a workout than my car and my iDevices and it is a $200 battery. It will last years and compared to everything else with a Leica brand on it it is cheap even if it is marked up 4x over normal retail for a battery of that capacity. I'll probably be craving the next generation of M camera body before this one really wears out. Link to post Share on other sites More sharing options...
prk60091 Posted February 26, 2016 Share #11 Posted February 26, 2016 I'm not going to disagree with you too much but the design spec for iDevices is about 2 years. They optimize simplicity of operation vs longevity of the battery. With Leica I keep coming back to the concept of sufficiency. How long do you really need a Lithium Ion battery to last? It probably will last 300 or so cycles and maybe a few more if you occasionally discharge reasonably low and almost always charge to only 80%. Even with my most extreme photographic aspirations it gets much less of a workout than my car and my iDevices and it is a $200 battery. It will last years and compared to everything else with a Leica brand on it it is cheap even if it is marked up 4x over normal retail for a battery of that capacity. I'll probably be craving the next generation of M camera body before this one really wears out. habits good or bad are hard to break. I maintain the "good" battery conditioning habits for everything. Unfortunately I maintain my bad eating habits as well Link to post Share on other sites More sharing options...
PaulJohn Posted February 26, 2016 Author Share #12 Posted February 26, 2016 http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries Very helpful. Thank you. Link to post Share on other sites More sharing options...
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