netmonk

Junior Member

Posts: 14

Threads: 3

Joined: Aug 2017

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Total Cells:

Total Capacity: 0.00 kWh Location:Posts: 14Threads: 3Joined: Aug 2017Reputation: 0 Total Cells:Total Capacity: 0.00 kWh #1

I started to collect laptop batteries, since more than one year. After an initial rush, where i collected almost 300 18650, i paused all this, mostly due to lack of place (im always amazed to watch those Californian DIYer's video, where their garage are almost double the surface of my own appartment, living in suburb area of Paris with a family of 4, need to arbitrage between space and passion).



Anyway, after revising my ambition, i paused my collect, until one of my colleague complained about a fresh submarine camera with a defective battery on arrival. He had a lot of trouble with the chinese seller to at least get a new battery pack (3s2p), i suggested him that i would be able to fix it with some of my good harvrested cells.



I was not even successful to resell my collected 18650 (although i put an announce here), so i found it was a good opportunity to do something usefull with those, instead of accumilating dust on shelf.



For doing that cleanly i had to get some strip for soldering, therefore i did a big order on banggood (which i also use for buying quadcopter part and electronic).



Yesterday received everything, and old projects switched back to front of my head.



So after putting little children in bed, and having charged my big LIPO of the kweld spot welder, i build this 4s5p battery pack.

Nothing very fancy, compared to those huge projects, but im pretty happy i didnt start a fire in my appartment, and i was very excited to see my battery well functionning at first plug, with the balance/charge meter.







So far, my only disappointment is that i use a TS80 iron, (the big brother of TS100). This model is powered by USB qc3.0 (which can deliver up to 12v2A). I wanted my battery pack to be able to power my iron when im out on the field flying my quadcopters.

For doing that i bought an DC-DC usb converter:



But i was unable to correctly power the TS80 reaching maximum 9v1A. With the normal power, i can reach 400degree in less than 10 seconds.

With the battery pack it takes almost 5 minutes.

So im looking a little for helps, if someone is able to find specs of this converter, my hypothesis is that 16v is not enought to have stable 9v2a with this chip.



May be i should do another pack 4s5p with the remaining 18650, to use them is serie.



So far, it charge very fast my mobile (9v1.5a).



Next step will be to buy some small solar panel, and implement a standalone charging system for this pack.



A little video charging: Hello there.I started to collect laptop batteries, since more than one year. After an initial rush, where i collected almost 300 18650, i paused all this, mostly due to lack of place (im always amazed to watch those Californian DIYer's video, where their garage are almost double the surface of my own appartment, living in suburb area of Paris with a family of 4, need to arbitrage between space and passion).Anyway, after revising my ambition, i paused my collect, until one of my colleague complained about a fresh submarine camera with a defective battery on arrival. He had a lot of trouble with the chinese seller to at least get a new battery pack (3s2p), i suggested him that i would be able to fix it with some of my good harvrested cells.I was not even successful to resell my collected 18650 (although i put an announce here), so i found it was a good opportunity to do something usefull with those, instead of accumilating dust on shelf.For doing that cleanly i had to get some strip for soldering, therefore i did a big order on banggood (which i also use for buying quadcopter part and electronic).Yesterday received everything, and old projects switched back to front of my head.So after putting little children in bed, and having charged my big LIPO of the kweld spot welder, i build this 4s5p battery pack.Nothing very fancy, compared to those huge projects, but im pretty happy i didnt start a fire in my appartment, and i was very excited to see my battery well functionning at first plug, with the balance/charge meter.So far, my only disappointment is that i use a TS80 iron, (the big brother of TS100). This model is powered by USB qc3.0 (which can deliver up to 12v2A). I wanted my battery pack to be able to power my iron when im out on the field flying my quadcopters.For doing that i bought an DC-DC usb converter: https://www.banggood.com/10pcs-DC-Buck-M...2252201709 But i was unable to correctly power the TS80 reaching maximum 9v1A. With the normal power, i can reach 400degree in less than 10 seconds.With the battery pack it takes almost 5 minutes.So im looking a little for helps, if someone is able to find specs of this converter, my hypothesis is that 16v is not enought to have stable 9v2a with this chip.May be i should do another pack 4s5p with the remaining 18650, to use them is serie.So far, it charge very fast my mobile (9v1.5a).Next step will be to buy some small solar panel, and implement a standalone charging system for this pack.A little video charging: https://www.instagram.com/p/BqTFatQBSdV/ Find Reply netmonk

Junior Member

Posts: 14

Threads: 3

Joined: Aug 2017

Reputation:

Total Cells:

Total Capacity: 0.00 kWh Location:Posts: 14Threads: 3Joined: Aug 2017Reputation: 0 Total Cells:Total Capacity: 0.00 kWh #2



I will try to put them in serial and power the usb converter to see if it will power my TS80.



What would be your criteria for saying it's well balance charged ?

Currently i have

- 4.20v

- 4.13v

- 4.13v

- 4.12v



Is it ok ?



Edit: While charging i burn a the parallel board, when i tried to plug the serial cable while balance cables where still plugged in the parallel board.

But, cause there is always a but, i also have an advanced battery tester from ISDT. And while reading the spec, i realised that it was possible to use it as an usb charger supporting qc2/qc3.

So directly i tested to power my TS80 solder iron, and it worked like a charm, with both pack in serial, or just with one pack :







Damn im happy.

Conclusion: this chip from banggod is nothing but support qc3.0. I just did another one pack 4s5p this evening.I will try to put them in serial and power the usb converter to see if it will power my TS80.What would be your criteria for saying it's well balance charged ?Currently i have- 4.20v- 4.13v- 4.13v- 4.12vIs it ok ?Edit: While charging i burn a the parallel board, when i tried to plug the serial cable while balance cables where still plugged in the parallel board.But, cause there is always a but, i also have an advanced battery tester from ISDT. And while reading the spec, i realised that it was possible to use it as an usb charger supporting qc2/qc3.So directly i tested to power my TS80 solder iron, and it worked like a charm, with both pack in serial, or just with one pack :Damn im happy.Conclusion: this chip from banggod is nothing but support qc3.0. Find Reply