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Making use of old Lithium batteries

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Phil Grant14/09/2014 19:57:52
107 forum posts
21 photos

Hi,

You can purchase a ready made single cell charger on the auction site, it has mini usb socket and soldermpads to put your own connection wires, best of all it costs around £2.

I use it with some 1850 cells removed from old laptop batteries, I leave it charging over night.

I post some links if anyone's intersted.

Ian S C15/09/2014 12:50:56
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7468 forum posts
230 photos

V8eng, your method of sorting TVs is the same as Dad used as a Radar mechanic during the war, the shock often got things going. I think the same system was used when he came home and became a radio technician with the NZ Broadcasting Service. It definitely works with valve radios.

Ian S C

jason udall15/09/2014 12:55:37
2032 forum posts
41 photos
As would re seating the bottles...but then duff connections aren't confined to valves machines...but semiconductor stuff doesn't ..generally...see the same temperature cycles as valve gear or have heavy components in sockets.
John Shepherd15/09/2014 17:26:23
222 forum posts
7 photos

This might be a bit extreme but it shows the amount of energy in a small package: **LINK**

I have witnessed the results of a few Lithium battery explosions (Not rechargeable Lithium Ion) and the amount of devastation a single AA sized cell can cause is unbelievable. The AA incident was an accident caused by a single cell being reversed charged in a battery pack and caused personal injury and put a workshop out of action for some time. Other battery explosions I have seen have been controlled experiments and believe me you would not want to drill into a Lithium cell.

If you are going to play with Lithium cells/batteries of any type please take care. If Boeing can get it wrong......

dcosta15/09/2014 18:32:28
496 forum posts
207 photos

Hello all,

You can see ***HERE*** some consequences of a Lithium Ion battery explosion in my garage/workshop.

Dias Costa

Neil Wyatt15/09/2014 19:13:31
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19226 forum posts
749 photos
86 articles

John is right to remind us of the safety issues.

i would contend that using a chip like the Maxim one is the best possible way to make a charger knowing it has a good reliable basis and a glance at the datasheet will show there's very little to go wrong.

Main message has to be don't charge damaged cells and don't try and restore or charge lithium-ion or li-poly with anything other than a charger designed for the task.

Neil

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