Psion netBook Battery Service: Difference between revisions
Create battery service page: pack specification, rebuild procedure and cited manufacturer guidance |
Recategorise as a Repair Guide to match Psion Revo Battery Replacement; rename a misleadingly-named reference |
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The original method is: sand a small patch of the terminal to give the solder something to key to, apply a drop of flux, and tin it '''in half a second, no more''', cooling the cell immediately afterwards with a cotton pad soaked in alcohol. The author is explicit that overheating a Li-ion cell may damage it.<ref name="libatt" /> | The original method is: sand a small patch of the terminal to give the solder something to key to, apply a drop of flux, and tin it '''in half a second, no more''', cooling the cell immediately afterwards with a cotton pad soaked in alcohol. The author is explicit that overheating a Li-ion cell may damage it.<ref name="libatt" /> | ||
That works, and people have done it successfully. But it puts a soldering iron against a live lithium cell for a period judged by eye, and a cell's internals begin to degrade well below the temperature at which solder flows. A '''mini spot welder and pure-nickel strip''' delivers a 1–10 ms pulse that heats only the surface, and it is the method [[Battery Refurbishment]] recommends for exactly this reason. A collector re-celling a netBook Pro pack in 2023 reached the same conclusion independently: "Since there are 3 batteries in there, I'm going to try using a spot welder this time."<ref name=" | That works, and people have done it successfully. But it puts a soldering iron against a live lithium cell for a period judged by eye, and a cell's internals begin to degrade well below the temperature at which solder flows. A '''mini spot welder and pure-nickel strip''' delivers a 1–10 ms pulse that heats only the surface, and it is the method [[Battery Refurbishment]] recommends for exactly this reason. A collector re-celling a netBook Pro pack in 2023 reached the same conclusion independently: "Since there are 3 batteries in there, I'm going to try using a spot welder this time."<ref name="hpcf-recell">[https://www.hpcfactor.com/forums/forums/thread-view.asp?tid=21108&start=1 HPC:Factor forum thread], September–October 2023, in which a collector re-celling one of these packs states the intention to spot weld rather than solder, and notes 18650 sourcing.</ref> | ||
If you do solder anyway: | If you do solder anyway: | ||
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[[Category:Psion]] | [[Category:Psion]] | ||
[[Category: | [[Category:Repair Guides]] | ||