New Magicshine battery runtime (not impressed)
#76
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I have not seen a connector issue so far.
I have the green/red indicator version of the 900 lumen light from 2009, not the latest one with other colors of battery level.
I noticed when it was red, I could unplug it and it would be green for a long time.
I've concluded that my replacement Geoman battery is much worse than the original one recalled.
It does only 30-40 min on high after a full charge before the light and indicator were both off.
Must be a bad battery.
got out the old DVM: the orig charger is 8.48VDC open circuit, the newer one is 8.51VDC open circuit... similar.
Last evening, having run on low mode for >2 hours after the indicator first started going red, I unplugged the battery, it measured 7.35VDC open circuit. The next morning, after being plugged in all night powering the indicator only, the battery measure 1.4VDC open circuit.... It seems my battery does have 1/3 of the rated capacity.
I think I will buy a new battery from somewhere, ... don't know where, are there good options?
I have the green/red indicator version of the 900 lumen light from 2009, not the latest one with other colors of battery level.
I noticed when it was red, I could unplug it and it would be green for a long time.
I've concluded that my replacement Geoman battery is much worse than the original one recalled.
It does only 30-40 min on high after a full charge before the light and indicator were both off.
Must be a bad battery.
got out the old DVM: the orig charger is 8.48VDC open circuit, the newer one is 8.51VDC open circuit... similar.
Last evening, having run on low mode for >2 hours after the indicator first started going red, I unplugged the battery, it measured 7.35VDC open circuit. The next morning, after being plugged in all night powering the indicator only, the battery measure 1.4VDC open circuit.... It seems my battery does have 1/3 of the rated capacity.
I think I will buy a new battery from somewhere, ... don't know where, are there good options?
#77
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https://www.geomangear.com/index.php?...age=page&id=23
If you want to buy a second one, I can recommend this one:
https://www.ebay.com/itm/New-WATERPRO...item4154fe4bce
Mine lasted 12 months (over 100 recharge/discharge cycles). A backup battery is a very good idea for all these 2s2p 18650 batteries, because they typically don't last more than 6-12months.
Don't be surprised if the replacement GMG battery behaves like the one you have now. I've had two of them, and neither one seem to work as well as the originals.
#78
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Thanks for the advice.
Yes, now that I know it's a real battery capacity issue and not just a lower voltage causing the warning light to come on early, I need a new unit.
Are you saying that these new batteries are typically less than 1/2 the capacity of the originals like the one I have?
Yes, now that I know it's a real battery capacity issue and not just a lower voltage causing the warning light to come on early, I need a new unit.
Are you saying that these new batteries are typically less than 1/2 the capacity of the originals like the one I have?
#79
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I haven't really used the light much, but at least as far as my measurement went ... the capacity was at least 90% of what it should be.
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Geoman sent me a 3rd charger, as my original and the replacement one they sent me would not charge my battery. They tested the new charger with 3 separate batteries to ensure it worked. I received it quickly, charged it overnight, and tested the battery. It lasted 3 hours and 40 minutes before shutting down. The status light on the back of my light-head works now that the battery is charging correctly. I can't praise Geoman enough for their great customer service!
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I've used the MS light for 2 years now, this year, my battery was recalled, then I got a new one in the summer. I found out that the MS light running on low was not lasting as long as it should before I saw the red indicator light come on. I suspected the new battery replacement was defective, but I could have also had a light head going bad over time. In the end, the light head died after 60 minutes runtime on low, all lights out, tripped the battery protection circuit probably.
So, was the battery bad, or was the lighthead drawing too much current, making it look like a battery had a low capacity, or both? For me, it's too late to know.
I have a new battery now, and a new lighthead, so we'll see over time how it goes.
The next time, I would rather spend $200 on a light that is more reliable.
So, was the battery bad, or was the lighthead drawing too much current, making it look like a battery had a low capacity, or both? For me, it's too late to know.
I have a new battery now, and a new lighthead, so we'll see over time how it goes.
The next time, I would rather spend $200 on a light that is more reliable.
#82
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I've used the MS light for 2 years now, this year, my battery was recalled, then I got a new one in the summer. I found out that the MS light running on low was not lasting as long as it should before I saw the red indicator light come on. I suspected the new battery replacement was defective, but I could have also had a light head going bad over time. In the end, the light head died after 60 minutes runtime on low, all lights out, tripped the battery protection circuit probably.
So, was the battery bad, or was the lighthead drawing too much current, making it look like a battery had a low capacity, or both? For me, it's too late to know.
I have a new battery now, and a new lighthead, so we'll see over time how it goes.
The next time, I would rather spend $200 on a light that is more reliable.
So, was the battery bad, or was the lighthead drawing too much current, making it look like a battery had a low capacity, or both? For me, it's too late to know.
I have a new battery now, and a new lighthead, so we'll see over time how it goes.
The next time, I would rather spend $200 on a light that is more reliable.
#83
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I found that the connector on the new battery pack is not quite right. It mates with the light connector OK but not too well with the charger connector. It often doesn't make proper contact (and as you know, if it's not plugged in the light glows green). I'll look at it, it's glowing green, I wiggle the connector, twist it, pull it halfway out, etc, and it'll turn back to red in some position. Eventually after a few hours it'll charge to where it won't turn red anymore, then it's REALLY charged.
That was the one problem with the new pack.
That was the one problem with the new pack.
They said that some early chargers and new batteries had compatibility issues and that that might be my issue, but I have the same behavior with the new charger.
I fiddle with the connection and it shows a red light on the charger. Thinking about changing all the connectors to a different style.....
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