Phil Grant | 14/09/2014 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 C | 15/09/2014 12:50:56 |
![]() 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 udall | 15/09/2014 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 Shepherd | 15/09/2014 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...... |
dcosta | 15/09/2014 18:32:28 |
496 forum posts 207 photos | Hello all, Dias Costa |
Neil Wyatt | 15/09/2014 19:13:31 |
![]() 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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