Ultrafire torch - new problem
mathematics
Posts: 453
My Ultrafire torch flashes and changes mode when riding on any kind of rough stuff - I am lead to believe this is due to the battery being loose and rattling around. Does anyone know if this is the case and if there is a fix for this?
This only happens with one of the torches - the other is fine. The batteries, incidentally, are the 18650 type.
Chris
This only happens with one of the torches - the other is fine. The batteries, incidentally, are the 18650 type.
Chris
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Comments
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Wrap some paper around the battery and out it back in so is wedged in tight.0
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supersonic wrote:Wrap some paper around the battery and out it back in so is wedged in tight.
Great plan! Giving that a go - thank you0 -
The light changes mode because the cell moves and the contact is broken - that's how the clicky-clicky tailcap works. So wedge the cell in more securely - I use electrical tape - and if necessary add a spacer to the cell to make it 'longer'... I have some rare-earth magnets.
Vitus Sentier VR+ (2018) GT Grade AL 105 (2016)
Giant Anthem X4 (2010) GT Avalanche 1.0 (2010)
Kingley Vale and QECP Trail Collective - QECP Trail Building0 -
When mine started doing the same thing mid-ride, I bodged a fix by inserting a 5p coin behind the battery to take some slack out of the system.0
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Next problem - I have some ultrafire 18650 batteries that are flat but the charger says they are charged, they defo have no charge in them - the wont operate the torch!!
Any ideas please? Are they shot?0 -
mathematics wrote:Next problem - I have some ultrafire 18650 batteries that are flat but the charger says they are charged, they defo have no charge in them - the wont operate the torch!!
Any ideas please? Are they shot?
Yeah, it happens sometimes. Of course, it could be the torch not working - have you ascertained that it's not at fault by using it with a different battery?0 -
yeah works with my other battery - the cells that wont take charge are protected - has that got anything to do with it?0
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Torchy has what looks like some pretty decent info on cells and lights on his site... he's an eBay seller too, but the tests seem fair enough. http://www.torchythebatteryboy.com/p/18650-batteries-chargers.htmlVitus Sentier VR+ (2018) GT Grade AL 105 (2016)
Giant Anthem X4 (2010) GT Avalanche 1.0 (2010)
Kingley Vale and QECP Trail Collective - QECP Trail Building0 -
mathematics wrote:yeah works with my other battery - the cells that wont take charge are protected - has that got anything to do with it?
Had this happen with some 26650 Lion batteries. The protection circuit kicked in and i just couldn't get them to unlock the battery so i just cut off the protection circuit with a knife (it's only held on to the bottom of the battery by the outer shrink wrap).0 -
Thank you.
I trawled a battery forum and found that you can reset the protection by putting a paper clip + to + and - to - with a charged cell. Now the cells are charging!0 -
Bartimaeus wrote:Torchy has what looks like some pretty decent info on cells and lights on his site... he's an eBay seller too, but the tests seem fair enough. http://www.torchythebatteryboy.com/p/18650-batteries-chargers.html
Great link, thanks.mathematics wrote:I trawled a battery forum and found that you can reset the protection by putting a paper clip + to + and - to - with a charged cell. Now the cells are charging!
Also very useful information!0
