Lights. CREE XML XM-L T6 / U2 etc Thread

[mrmacmusic]

Some batteries failed and set on fire due to corroded or failed protection cells. Best method is to charge away from combustable material, and don't leave them unattended - i.e. if you go out turn the charger off.

Precautions are to seal the battery with tape to stop water ingress. I usually charge my battery with it still attached to the bike, just plug the charger in near by. I then store them when not using them in summer in a tin biscuit box.

You have to be careful with all lipo batteries for the reason above. Also if you notice damage, eg dented or 'bloated' cells, then bin them. I wouldn't worry, but regularly inspect them and keep an eye on them during charging. Don't forget these whack out alot more juice than an AA battery, hence 'extra care'. - I've seen AA's overheat when shorted by accident - did wonder why my office started smelling, and the Tesco torch was very hot to touch even off - the batteries had shorted. Had to bin the batteries as the chemicals had leaked out.

Thanks again fossyant – I think that's very helpful advice for anyone with these battery packs

I don't leave mine unattended when charging and have been checking the pack, although to be honest, you're really not going to see anything through the shrink-wrap, except perhaps detect bloated cells or excess heat (which I'd check for with all batteries anyway).... Think I'll follow your advice though and properly seal my battery pack to prevent water ingress – rains a lot here

 

[RhythMick]

Thanks again fossyant – I think that's very helpful advice for anyone with these battery packs

I don't leave mine unattended when charging and have been checking the pack, although to be honest, you're really not going to see anything through the shrink-wrap, except perhaps detect bloated cells or excess heat (which I'd check for with all batteries anyway).... Think I'll follow your advice though and properly seal my battery pack to prevent water ingress – rains a lot here

I wonder if it's worth using silicone sealant? On the other hand don't want to prevent airflow and thus cause overheating.

 

[fossyant]

I wonder if it's worth using silicone sealant? On the other hand don't want to prevent airflow and thus cause overheating.

Air pressure should still get out next to the cable exit. The main concern is to seal off the ends so water doesn't get in there.

 

[Deleted member 20519]

Does the light get duller until the battery dies?

 

[musa]

Does the light get duller until the battery dies?

Battery life will affect the lights performance

 

[MrGrumpy]

thats the worry with these battery packs you are unable to balance out the charging on a per cell basis. So 1 or 2 cells could get overcharged in the pack of 4 because the other 1 or 2 or still needing charged up? Torches would appear a better and safer way (not totally),as you are charging up cells individually. Just for info, I split up an old laptop battery pack for cells and got some out of it, however a couple when on charge got very hot, so binned them. They should not get hot!

 

[fossyant]

Quite happy with it for £27. Battery now charged. Like the 3 power modes, and it's good that you have to hold in the button to get the manic flash, as you don't have to cycle through it to adjust brightness.

 

[billy1561]

Quite happy with it for £27. Battery now charged. Like the 3 power modes, and it's good that you have to hold in the button to get the manic flash, as you don't have to cycle through it to adjust brightness.

So that's how you do it !

 

[Hacienda71]

Should I get one of these to replace my ageing MJ808

 

[wanda2010]

Nope.

If you didn't have a cooker you could use it fry an egg, maybe

 

[fossyant]

Should I get one of these to replace my ageing MJ808

Good god.

 

[musa]

See through walls or cut your dinner up with it

 

[musa]

how long does delivery date bought on the 17th so much for next day or two day
there are certainly china links with the same registered there contact details go back to china

 

[Nigelnaturist]

how long does delivery date bought on the 17th so much for next day or two day
there are certainly china links with the same registered there contact details go back to china

If you got it from the link, it only took mine 2 days, but the 17th was a Sat so post Mon, you should have got it, though might be today (Thur).

 

[potsy]

Should I get one of these to replace my ageing MJ808

SMIDSY alert.