M10 Dual Battery Charger

[scott kirkpatrick]

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I think they are simple high-rate chargers with a safety cutoff that leaves them at about 85-90% of full charge.  Since they cut off after the fast charge part is done, leaving them on overnight will not change anything.  Their measurement capability is relevant.  I have checked the voltage reading while they are charging with a better digital voltmeter and the Nitecore value is correct.  The listing of watt-hrs added during charging is presumably an accurate test of how depleted the battery was, except for the amount missing because of the charger's early stopping.  When my Nitecore charger is finished, I see about 85% full on the M10's battery monitor, and when I put them into a Leica charger, the yellow light goes on and the blinking green charger light shows that charging continues at a lower rate for half an hour or more.  The same occurs with SL and CL batteries.

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[Guest]

4 minutes ago, scott kirkpatrick said:

I think they are simple high-rate chargers with a safety cutoff that leaves them at about 85-90% of full charge.  Since they cut off after the fast charge part is done, leaving them on overnight will not change anything.  Their measurement capability is relevant.  I have checked the voltage reading while they are charging with a better digital voltmeter and the Nitecore value is correct.  The listing of watt-hrs added during charging is presumably an accurate test of how depleted the battery was, except for the amount missing because of the charger's early stopping.  When my Nitecore charger is finished, I see about 85% full on the M10's battery monitor, and when I put them into a Leica charger, the yellow light goes on and the blinking green charger light shows that charging continues at a lower rate for half an hour or more.  The same occurs with SL and CL batteries.

Thanks, good info. I'm a simpleton really, I put the battery in and wait for "Full" to appear. The Leica charger provides a better gauge I think, and it gets there more quickly. That 10 to 15% shortfall could be significant, up to the user though. They're OK is if you need two batteries charging at the same time and are great for that.

[scott kirkpatrick]

Recently with the Nitecore charger I have been finding that once the battery has been brought up quickly to 85% or so, and the charger has halted, I can remove and replace the battery, and the charger will continue to charge, this time more slowly.  The result the second time is likely to be rated 100% on the M10 monitor.

[pico]

It appears that the Nitecore does not communicate with batttery's chip. Is that a good thing?

[jdlaing]

2 hours ago, pico said:

It appears that the Nitecore does not communicate with batttery's chip. Is that a good thing?

In a word yes.

 

[farnz]

11 hours ago, pico said:

It appears that the Nitecore does not communicate with batttery's chip. Is that a good thing?

No, because it needs to communicate with the battery's chip to understand the fill level so as not to overcharge it when Li-Ion batteries can become dangerous.

I would be very surprised if the Nitecore charger doesn't communicate with the M10 battery because Nitecore chargers provide a lot of data on a small LCD screen and that data is reliant on talking to the battery.

Pete.

[scott kirkpatrick]

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The Nitecore readout shows the battery voltage, the current (milliamps) flowing into the battery to charge it, and the integrated current delivered during a charge cycle (milliamp-hours).  If you compare the milliamp-hours with the battery's stated capacity you can see the fraction of total charge that was restored.  But it is probably using the external voltage measurement to decide when it needs to stop so that it will not overcharge.  The latest Nitecore charger does seem to have both a fast and a slow charge profile, and using both allows a more complete charge.  But I doubt that Leica has shared the specifics of the safety chip inside their battery with anyone besides the charger and battery maker (even though it is probably a pretty standard design by now).

[georhey]

Not sure if anyone is still looking for a USB charger but I found something that has been working for me.  I found this step up converter cable https://www.amazon.com/KUNCAN-Converter-Cable-Voltage-2-1mm/dp/B01ID90K4A/ref=asc_df_B01ID90K4A/?tag=hyprod-20&linkCode=df0&hvadid=198062682203&hvpos=1o1&hvnetw=g&hvrand=13962344598008113274&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1013701&hvtargid=pla-319814661088&psc=1

on Amazon that allows you to plug your usb battery pack into the car charger port on the M10 charger.  Cable was $7.99 and I've been using it for a few weeks now with no issues.  Hope this helps someone.

 

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[Guest]

Use something similar, an Anker 20,000 mHa battery pack, it also has a DC out port, as well as USB, which is switchable between 9V and 12V, avoids having to step up the USB voltage to use with the Leica charger.  The Nitecore charger just runs off the USB port as is.

[budjames]

I have the Nitecore dual M10 battery charger. It works great and I love the LCD display that shows charging status and amperage.

Regards,
Bud James

Please check out my fine art and travel photography at www.budjames.photography or on Instagram at www.instagram.com/budjamesphoto.

[marcg]

The Nightcore dual M 10 USB charger is excellent.

I started a thread on this some time ago. Two or three people have given some fairly detailed information about it.