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Old 06-28-2017, 05:11 PM #1
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Default 10280 battery charger review

Hi, I got a request to do a review on a 10280 battery charger I had made for me by a member. It's a custom build made from a button cell charger. The lights on the front blink blue as it's charging, than turn green when the battery fully charged. Like the way the builder used two small magnets to hold the ends to the battery when it's being charged, makes it real simple to use the charger. Also like the little holder for the magnets when not in use. I use it for two of my builds that take the 10280. A key chain mini build kit from Jayrob that takes one 10280 http://laserpointerforums.com/f39/fs...ery-42564.html and one built by BlackOps that take two 10280's A Work of Art It's a small charger but it seem to work just fine and do a great job, had it for about a year and no problems















Hope you enjoy the small review.

Ps, if anyone has any small builds like this, they'd be willing to sell, shoot me a PM and see if we can work something out. thanks


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Old 06-28-2017, 06:24 PM #2
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Default Re: 10280 battery charger review

Cool Bob, neat charger! That's a pretty good idea with the cylindrical magnets, I would've never thought of that. Is that solder holding the wires on? Didn't know you could solder to magnets! Good stuff
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Old 06-28-2017, 06:39 PM #3
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Default Re: 10280 battery charger review

Quote:
Originally Posted by ElectricPlasma View Post
Cool Bob, neat charger! That's a pretty good idea with the cylindrical magnets, I would've never thought of that. Is that solder holding the wires on? Didn't know you could solder to magnets! Good stuff
You know I was wondering how he did that myself? It looks like solder??? maybe it was that solder paste? Would like to know that myself. Maybe I can shoot him a PM and ask?
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Old 06-28-2017, 07:00 PM #4
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Default Re: 10280 battery charger review

I remember a while back there was a similar thread regarding soldering magnets, it seems like it worked out pretty good.

How to make Magnetic battery connectors

Edit: Here's another one - charging adapters to fit ANY SIZE li-ion into an 18650 charger (Pila IBC or other)

BTW - I almot forgot, nice little review, Bob!
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Old 06-28-2017, 07:29 PM #5
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Default Re: 10280 battery charger review

Quote:
Originally Posted by BowtieGuy View Post
I remember a while back there was a similar thread regarding soldering magnets, it seems like it worked out pretty good.

How to make Magnetic battery connectors

Edit: Here's another one - charging adapters to fit ANY SIZE li-ion into an 18650 charger (Pila IBC or other)

BTW - I almot forgot, nice little review, Bob!

Thanks Bowtie !

I was unaware of these threads. will check them out. :
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Old 06-29-2017, 12:20 AM #6
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Default Re: 10280 battery charger review

Awesome yes I've soldered to magnets before sometimes it's handy to put on the end of your spring for a better connection!
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Old 06-29-2017, 12:27 AM #7
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Default Re: 10280 battery charger review

Quote:
Originally Posted by badboybilly View Post
Awesome yes I've soldered to magnets before sometimes it's handy to put on the end of your spring for a better connection!
It's a art I'm going to have to learn.
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Old 06-29-2017, 01:17 AM #8
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Default Re: 10280 battery charger review

Quote:
Originally Posted by BobMc View Post
You know I was wondering how he did that myself? It looks like solder??? maybe it was that solder paste? Would like to know that myself. Maybe I can shoot him a PM and ask?
Yes solder...

The magnets are small but relatively long. I just used an extra hot tip so that the soldering got done really fast. Did not demagnetize...
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Old 06-29-2017, 04:13 AM #9
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Default Re: 10280 battery charger review

Quote:
Originally Posted by jayrob View Post
Yes solder...

The magnets are small but relatively long. I just used an extra hot tip so that the soldering got done really fast. Did not demagnetize...
Thanks Jayrob, gonna have to practice my soldering a bit.
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Old 06-30-2017, 01:44 AM #10
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Default Re: 10280 battery charger review

You are lucky the magnets still work after soldering on to them really, since most Nd magnets lose magnetization somewhere in the order of 100 celcius (cooking them in water will ruin them after some time).

I guess one advantage is that they are usually nickel coated which takes solder pretty easily, and you can complete the connection without heating up and ruining the magnet entirely.

For anyone wanting to repeat this build it'd advise going about it differenty though: find some ferromagnetic discs that will take solder (such as coins), solder the wires onto those and then put the magnets in betwteen the coins and batteries.

Things like Nd magnets really are temperature sensitive, you an render them magnetically inert with boiling water or a solder attempt. There is no visible difference, apart from the magnetzation being gone. If they are nickel plated (as many are) they'll still be attracted by identinal magnets that have not been 'cooked' before since nickel is ferromagnetic to start with.
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Old 06-30-2017, 03:15 AM #11
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Default Re: 10280 battery charger review

Quote:
Originally Posted by Benm View Post
You are lucky the magnets still work after soldering on to them really, since most Nd magnets lose magnetization somewhere in the order of 100 celcius (cooking them in water will ruin them after some time).

I guess one advantage is that they are usually nickel coated which takes solder pretty easily, and you can complete the connection without heating up and ruining the magnet entirely.

For anyone wanting to repeat this build it'd advise going about it differenty though: find some ferromagnetic discs that will take solder (such as coins), solder the wires onto those and then put the magnets in betwteen the coins and batteries.

Things like Nd magnets really are temperature sensitive, you an render them magnetically inert with boiling water or a solder attempt. There is no visible difference, apart from the magnetzation being gone. If they are nickel plated (as many are) they'll still be attracted by identinal magnets that have not been 'cooked' before since nickel is ferromagnetic to start with.
I've repeated the process I described at least 10 times with no problems. The only thing I left out was to put a very small amount of flux on the end of the magnet, pre-load the tip with solder after it is nice and hot. (hotter than normal)

Then pull away from the magnet obviously as soon as the solder takes to it.

After you have your solder on the magnet, you can easily attach a pre-loaded wire to it...
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