How long does it last @ 4000Lm?
1641233
I'm sorry, but I can't answer that question, since I never timed it. I can say that this is a super bright flashlight, with a beam of great range and width. I mainly use it to keep tabs on what my dog is doing in my back yard, and it lights up a great swath of the yard. I have been more than satisfied with the duration, and recharge the batteries about once a week, but I cannot quantify the battery light in terms of "How long does it last @ 4000Lm?". I have three sets of batteries, so I can pop a fresh set into the flashlight if its brightness begins to wane. I can say that it does not seem to have a sharp cutoff - the brightness just begins to slowly diminish.
1641234
What I do to help optimize and maximize ones initial investment in ones lithium ion rechargeable batteries to help realize its full potential anticipated 500 cycles; I recharge the lithium ion rechargeable batteries as an entire set of four batteries whenever the voltage of the cells falls down to about 3.5 volts; this helps to keep the batteries from being overly discharged, tends to help cut down on the lithium ion battery recharge times; this also generally helps to keep the lithium ion batteries as a set of four batteries in balance with the other three lithium ion batteries longer; which also tends to keep the lithium ion batteries in better healthy shape for as long as potentially possible. What I do to help optimize and maximize ones initial investment in ones lithium ion rechargeable batteries to help realize its full potential anticipated 500 cycles; I recharge the lithium ion rechargeable batteries as an entire set of four batteries whenever the voltage of the cells falls down to about 3.5 volts; this helps to keep the batteries from being overly discharged, tends to help cut down on the lithium ion battery recharge times; this also generally helps to keep the lithium ion batteries as a set of four batteries in balance with the other three lithium ion batteries longer;... » Read More What I do to help optimize and maximize ones initial investment in ones lithium ion rechargeable batteries to help realize its full potential anticipated 500 cycles; I recharge the lithium ion rechargeable batteries as an entire set of four batteries whenever the voltage of the cells falls down to about 3.5 volts; this helps to keep the batteries from being overly discharged, tends to help cut down on the lithium ion battery recharge times; this also generally helps to keep the lithium ion batteries as a set of four batteries in balance with the other three lithium ion batteries longer; which also tends to keep the lithium ion batteries in better healthy shape for as long as potentially possible. « Show Less
1641235
I'm sorry, but I can't answer that question, since I never timed it. I can say that this is a super bright flashlight, with a beam of great range and width. I mainly use it to keep tabs on what my dog is doing in my back yard, and it lights up a great swath of the yard. I have been more than satisfied with the duration, and recharge the batteries about once a week, but I cannot quantify the battery light in terms of "How long does it last @ 4000Lm?". I have three sets of batteries, so I can pop a fresh set into the flashlight if its brightness begins to wane. I can say that it does not seem to have a sharp cutoff - the brightness just begins to slowly diminish. I'm sorry, but I can't answer that question, since I never timed it. I can say that this is a super bright flashlight, with a beam of great range and width. I mainly use it to keep tabs on what my dog is doing in my back yard, and it lights up a great swath of the yard. I have been more than satisfied with the duration, and recharge the batteries about once a week, but I cannot quantify the battery light in terms of "How long does it last @ 4000Lm?". I have three sets of batteries, so I can pop a fresh set into the flashlight if its brightness begins to wane. I can say that it... » Read More I'm sorry, but I can't answer that question, since I never timed it. I can say that this is a super bright flashlight, with a beam of great range and width. I mainly use it to keep tabs on what my dog is doing in my back yard, and it lights up a great swath of the yard. I have been more than satisfied with the duration, and recharge the batteries about once a week, but I cannot quantify the battery light in terms of "How long does it last @ 4000Lm?". I have three sets of batteries, so I can pop a fresh set into the flashlight if its brightness begins to wane. I can say that it does not seem to have a sharp cutoff - the brightness just begins to slowly diminish. « Show Less
2254545
No more than four hours . I wouldn't recommend using much after that. I'm sure it would last up to six hours I just don't no it's effectiveness
270913
Mine lasted about 8 hours. I've only needed it a couple times. I was overall satisfied.
1127169
Can't find it from the manual. Suppose the life span of the battery depends very much on usage of special features like the lamp and altimeter. Otherwise, I would expect two years the minimum acceptable life span.
1825926
We have had ours for about 7-8 months... used every day and still running strong. It is LED so it should last for years ... works great too
1326624
I does last for a long time....I bought mine in Feb. and it is still going strong...normally they are supposed to last 50,000 hours and I am still counting.
409739
I assume you are asking about the life of the unit... I would give it at least 10 years, depending on how you treat it. If you are asking how long the battery lasts when not connected to a power supply, then the plot thickens... the battery time depends on how you have the 65LM set up. If you have all 3D maps, brightness set to really high, volume high, details on the map high, then the battery will last about an hour. If you have everything set to the lowest level but still useable, then the battery will last about 5 hours without a power supply. Any settings in between these will last relative to the settings. Hope this helps. I have two of these units and they are STURDY and STABLE. I have used Garmins for a LONG time, and every one of them is still working with NO PROBLEMS AT ALL. I only changed to get free Life Time Maps or for a larger screen size...
1616578
I bought mine 4 months ago. It still works so far. I'll let you know when it dies.
1172276
Same as below. About 2-3 hours when new. Now after 2 years about an hour. Still works ok, so not too bad.
450178
Hello Linda. I bought this battery just last year when the original died of natural causes. At most, this sucker last me about an hour to an hour and a half after it's been fully charged. Might not seem like much mind you, but I tend to use the internet a lot and stream things online, and different pages up at once. The less you use, the longer it'll last bit I was reall happy when I got it. And instalation is pretty simple. Let me know if this does/doesn't solve your riddle. I will try again for you. Please have a good evening.
1463716
I had one last about 3 years and I'd say it had at most 40 hours on it. I have others that are still working, but at these prices, there should be absolutely no failures at all - no excuses!
2009410
divide 6000.hrs by 24.hrs equal 250 days / so unless you run unit for 24.hrs for 250 days/ lamp should last at least a year .(good bet ! )
1675251
It lasts a good 6 hours at least. Source: I accidentally left it on overnight
1911795
it lasts about 3 to 4 hours , with about half a year of use it reduces to about 2.5 hours to 3 hours
1963278
It typically lasted 3 to 4 hours if I didn't attach USB devices to it. (I usually use about 85% of full screen brightness.)
947804
Sorry, no idea. The only thing I can say is my lasts for ages - I have been building stuff in my garage all day and it has lasted 8 hours straight.
576784
A very long time. I would say somewhere around 30 hours. The battery lasts forever though.