panasonic 18650 ncr1 3400ma 5 year discharge test

[soundwave]

i use 6 of these in a power bank that has been used to charge phones and used to power bike lights ect over the years so as i got it all out will be interesting to see how many mha are left in the cell after all this time.

 

[guerney]

 

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it wont explode im afraid it is a discharge test to see what the capacity is 5 years later from 3400mah from new.

 

[guerney]

it wont explode im afraid it is a discharge test to see what the capacity is 5 years later from 3400mah from new.

With laptop batteries not charged for 5 years, the prognosis is poor - I usually throw them away. That being said, I've got an extremely rare battery for a very old laptop which I might try replacing the cells of. Otherwise new batteries for it are £135 plus duty etc. Bloody Sony!

 

[guerney]

I could do with a cheap but effective soldering gadget for the cells. At least the cells should be easy to source.

 

[soundwave]

they are out of my 6 cell power bank that you can remove the cells from.

5v 2a usb
8.4v 8a light connector.

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[soundwave]

I could do with a cheap but effective soldering gadget for the cells. At least the cells should be easy to source.

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stock is low everywhere and prices are rising on everything!

 

[guerney]

Fogstar Batteries | The UK’s #1 Lithium Battery Retailer

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stock is low everywhere and prices are rising on everything!

The cells in the Sony laptop battery pack are small and slim, haven't opened it up yet - I have a second battery pack which I might be able to salvage good cells from, but that has never been charged because the seller sent me the wrong version... but I was refunded. Cells should be similar if not the same, whatever they are - they look likely AAA sized li-ions of some sort. I'll open the packs up to see.

 

[guerney]

I'm not spending this much on a new one, that's for sure:

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[soundwave]

The cells in the Sony laptop battery pack are small and slim, haven't opened it up yet - I have a second battery pack which I might be able to salvage good cells from, but that has never been charged because the seller sent me the wrong version... but I was refunded. Cells should be similar if not the same, whatever they are - they look likely AAA sized li-ions of some sort. I'll open the packs up to see.

lol 3 aa batts will give you 50ma from each batt my heated gloves takes 3 and just about lights up the leds

 

[guerney]

The very slim pack did manage to power it for about 2 hours when new, barely manages 45 minutes now. I've got a much higher capacity version too which works great, I charge it every six months, lasts over 4 hours with laptop going full pelt, 8 hours browsing or running office apps, and that pack definitely contains 18650 cells. I'll find out what those mysterious AAA sized liion cells are...

 

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The very slim pack did manage to power it for about 2 hours when new, barely manages 45 minutes now. I've got a much higher capacity version too which works great, I charge it every six months, lasts over 4 hours with laptop going full pelt, 8 hours browsing or running office apps, and that pack definitely contains 18650 cells. I'll find out what those mysterious AAA sized cells are...

well good luck getting to the cells most of the time it is a cell salvage mission as most of the time you destroy the batt getting the cells out. and done on purpose!

id do that first b4 you get any new cells and even then the bms could kill itself if the power is removed.

 

[guerney]

The value of that laptop is going up:

Sony Vaio P series - Wikipedia

en.wikipedia.org

It might be worth the same as it's original price, in about 20 years lol.

 

[soundwave]

The value of that laptop is going up:

Sony Vaio P series - Wikipedia

en.wikipedia.org

It might be worth the same as it's original price, in about 20 years lol.

id throw it in the bin lol but if you want to keep it alive good for you

 

[guerney]

well good luck getting to the cells most of the time it is a cell salvage mission as most of the time you destroy the batt getting the cells out. and done on purpose!

id do that first b4 you get any new cells and even then the bms could kill itself if the power is removed.

Very interesting. It's worth a go keeping it alive - it's actually very useful, has a sim slot, keeps track of my work emails, I actually can work on the hoof, reprograms my Bafang on the road, it's a hard working little thing. The new ultrabooks are all too damn big, else I'd get a GPD Pocket, which is too big for any pocket. Can't do everything with phones yet...

It's about to get an SSD (M2 drives are cheap these days), which use less power. Thankfully, nothing is glued in, unlike many new laptops.

 

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Very interesting. It's worth a go keeping it alive - it's actually very useful, has a sim slot, keeps track of my work emails, I actually can work on the hoof, reprograms my Bafang on the road, it's a hard working little thing. The new ultrabooks are all too damn big, else I'd get a GPD Pocket, which is too big for any pocket. Can't do everything with phones yet...

It's about to get an SSD (M2 drives are cheap these days), which uses less power. Thankfully, nothing is glued in, unlike many new laptops.

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[guerney]

The most repairable laptops are old Thinkpads - i7 CPUs, full HD screens can be added, trackpads upgraded, motherboards replaced with brand new ones, BIOSs replaced, new keyboards and battery packs easily obtained, and they're built to last. Anyway, this is all a segway from your battery cell revival investigation...

 

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you get what you pay for and well impressed tbh

 

[guerney]

Do you have a link for that? Does it have FM radio?

 

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