MINI POWER POWER PACK...

[mountainsport]

Hello All,

I would like to purchase these head lights
https://www.ebay.co.uk/itm/32000LM-3-Mode-12x-CREE-XM-L-T6-LED-Bike-Bicycle-Cycling-Torch-Headlight-Lamp-US-/332154261445?var=&hash=item4d55efcfc5

I would like to use a powerful battery pack with good running time. Can I use for instance Hobbyking batteries that can plug in directly into the male connector ? Or can someone please advise me on a better power bank option for these headlights .

MS.

 

[Powerbikes]

You could fashion something up from hobbyking but it would be easier and probably cheaper to just buy the battery pack from the same seller
https://www.ebay.co.uk/itm/Rechargeable-8-4V-12000mAh-4x-18650-Battery-Pack-For-Bike-Bicycle-Headlamp-Light-/332061950810

 

[mountainsport]

You could fashion something up from hobbyking but it would be easier and probably cheaper to just buy the battery pack from the same seller
https://www.ebay.co.uk/itm/Rechargeable-8-4V-12000mAh-4x-18650-Battery-Pack-For-Bike-Bicycle-Headlamp-Light-/332061950810

Thank you Powerbikes, for letting me know, That does sound more feasible.

MS.

 

[soundwave]

well i bought one of those lights and there utter crap and it did not even make it on the bike as stopped working when testing it and got a refund.

also the packs from china use fake cells so no where near there stated output.

i have this and use a separate charger for the cells.

https://www.ebay.co.uk/itm/NEW-Waterproof-4x18650-Battery-Storage-Case-Box-Holder-For-Bike-LED-Light-D1W5/332379123956?_trkparms=aid=555018&algo=PL.SIM&ao=2&asc=49480&meid=4c45753f19024908afb3c7aac9933939&pid=100005&rk=1&rkt=6&sd=152101697909&_trksid=p2047675.c100005.m2219
these are the best cells you can get for a light.

https://www.ebay.co.uk/itm/2x-Genuine-Panasonic-18650-3400mAh-Rechargeable-Battery-NCR18650B-Vape-UK-Stock/322901450041?hash=item4b2e6d1d39:g:rEYAAOSwsYpZ-8Yy

https://www.ebay.co.uk/itm/Nitecore-D2-Digicharger-LCD-1865018350-16340-14500-IMR-universal-smar-Charger-L/382276752316?_trkparms=aid=555019&algo=PL.BANDIT&ao=1&asc=20151016114640&meid=4b108b0581044068b528d87f4a96c40b&pid=100507&rk=1&rkt=1&&_trksid=p2045573.c100507.m3226

you can get a cheaper charger about ten quid if not wanting a display but total about 30 quid.

 

[danielrlee]

^+1

Some great advice from soundwave there.

 

[gwing3]

You could fashion something up from hobbyking but it would be easier and probably cheaper to just buy the battery pack from the same seller
https://www.ebay.co.uk/itm/Rechargeable-8-4V-12000mAh-4x-18650-Battery-Pack-For-Bike-Bicycle-Headlamp-Light-/332061950810

All I can say is be very careful. That pack is unbelievably cheap, you can't even buy genuine cells of that capacity for the price which is a clue. It's best to regard all cheap Chinese battery packs (even off-bran counterfeit individual cells as well) as little bombs waiting to explode and burn your house down.

You can afford to buy cheap lights but not cheap Lithium batteries or even worse packs. Much safer is to by genuine individual cells, a good charger, then charge them individually and put them into a battery holder. These https://www.ebay.co.uk/itm/Durable-8-4V-USB-DC-Ports-Bicycle-Bike-Light-Battery-18650-Holder-Case-Box/302484259511?hash=item466d7782b7:m:mt0xRbwP_GljWzQi_CH9STw are advertised all over ebay by various sellers. I bought a couple and only one functioned reliably but they are cheap and unlike battery packs don't explode if duff or abused

We really should have a sticky with this sort of caution on it somewhere here I think.

 

[gwing3]

well i bought one of those lights and there utter crap and it did not even make it on the bike as stopped working when testing it and got a refund.

also the packs from china use fake cells so no where near there stated output.

i have this and use a separate charger for the cells.

https://www.ebay.co.uk/itm/NEW-Waterproof-4x18650-Battery-Storage-Case-Box-Holder-For-Bike-LED-Light-D1W5/332379123956?_trkparms=aid=555018&algo=PL.SIM&ao=2&asc=49480&meid=4c45753f19024908afb3c7aac9933939&pid=100005&rk=1&rkt=6&sd=152101697909&_trksid=p2047675.c100005.m2219
these are the best cells you can get for a light.

https://www.ebay.co.uk/itm/2x-Genuine-Panasonic-18650-3400mAh-Rechargeable-Battery-NCR18650B-Vape-UK-Stock/322901450041?hash=item4b2e6d1d39:g:rEYAAOSwsYpZ-8Yy

https://www.ebay.co.uk/itm/Nitecore-D2-Digicharger-LCD-1865018350-16340-14500-IMR-universal-smar-Charger-L/382276752316?_trkparms=aid=555019&algo=PL.BANDIT&ao=1&asc=20151016114640&meid=4b108b0581044068b528d87f4a96c40b&pid=100507&rk=1&rkt=1&&_trksid=p2045573.c100507.m3226

you can get a cheaper charger about ten quid if not wanting a display but total about 30 quid.

That chargers fine but, if you haven't seen it already, you might take a look at the Litekala Engineer 500 analysing charger. I put up some early info on it on BLF and quite a few folks there now use it, although everyone has their favourites.

 

[soundwave]

remember that 18650 case has no short circuit protection so make sure the cells go in the right way round otherwise things get hot, tho it does melt the springs b4 it goes bang lol.

this is that light and stopped working after this and as you can see total crap.

 

[Powerbikes]

I didn't even consider the fact they will be cheap knock offs. Plenty of documented cases of cheap lithium batteries exploding too.
I think Soundwave has posted the best option there.

 

[Nealh]

A HK lipo only make sense if you are already set up for them, though tend to be bulkier then 18650's.
A basic lipo charge is only a tenner or so.

 

[EddiePJ]

I had roughly three dark winters and 6,000 miles of use in extremely arduous, wet and muddy conditions from my cheapo Chinese battery pack.

My pack performed without fault, and it was only an incident involving the spokes of the front wheel, that convinced me to let both the battery pack, and the Fenix BT20 rest in peace. The Fenix was certainly a good light. I'm also surprised at how little water damage that there was within the battery pack.

I'm currently trying without success to resurrect the Fenix, just so that I can use it for some comparative testing against my superb Magicshine Eagle F3, and a certain 'non best' light.


.

 

[soundwave]

I had roughly three dark winters and 6,000 miles of use in extremely arduous, wet and muddy conditions from my cheapo Chinese battery pack.

My pack performed without fault, and it was only an incident involving the spokes of the front wheel, that convinced me to let both the battery pack, and the Fenix BT20 rest in peace. The Fenix was certainly a good light. I'm also surprised at how little water damage that there was within the battery pack.

I'm currently trying without success to resurrect the Fenix, just so that I can use it for some comparative testing against my superb Magicshine Eagle F3, and a certain 'non best' light.


.

what is wrong with the light ? as it is just a driver and a led at the end of the day.

 

[EddiePJ]

No idea at the moment. It was working before the incident, and now it isn't.

The power lead was shredded, so I guess that something must have shorted out.

 

[soundwave]

it could be just depends how heavy the impact was but you wont know unless you take it to bits.

leds are easy to replace on the pcb but if the driver is broken then be a right pita to get a replacement driver as there custom to each light.

 

[Deleted member 4366]

I would use this one with six good quality 18650s. You could use one of the 4 cell ones as long as you have decent (high drain) 18650s:

https://www.ebay.co.uk/itm/Useful-8-4V-Waterproof-Battery-Pack-Case-House-Cover-For-Bicycle-Bike-Lamp-SY/362136679680?hash=item5451073500:m:m66GcCULDr00khywb5okO4A

As a precaution against over-draining, I'd get one of these and fit a voltmeter into the second socket:

https://www.ebay.co.uk/itm/2-IN1-Y-type-Power-adapter-Cable-Battery-For-Head-Bicycle-light-Bike-Lamp/201392265704?epid=1388808072&hash=item2ee3ea19e8:g:p9MAAOSwcwhVJikI

Switch off at 7V to be sure you haven't over-drained.
https://www.ebay.co.uk/itm/Waterproof-Round-Panel-DC-12V-Car-Boat-LED-Digital-Display-Voltmeter-Meter-J-C/192357216297?hash=item2cc9623029:g:XrcAAOSw-0xYZJ6I

 

[soundwave]

I would use this one with six good quality 18650s. You could use one of the 4 cell ones as long as you have decent (high drain) 18650s:

https://www.ebay.co.uk/itm/Useful-8-4V-Waterproof-Battery-Pack-Case-House-Cover-For-Bicycle-Bike-Lamp-SY/362136679680?hash=item5451073500:m:m66GcCULDr00khywb5okO4A

As a precaution against over-draining, I'd get one of these and fit a voltmeter into the second socket:

https://www.ebay.co.uk/itm/2-IN1-Y-type-Power-adapter-Cable-Battery-For-Head-Bicycle-light-Bike-Lamp/201392265704?epid=1388808072&hash=item2ee3ea19e8:g:p9MAAOSwcwhVJikI

Switch off at 7V to be sure you haven't over-drained.
https://www.ebay.co.uk/itm/Waterproof-Round-Panel-DC-12V-Car-Boat-LED-Digital-Display-Voltmeter-Meter-J-C/192357216297?hash=item2cc9623029:g:XrcAAOSw-0xYZJ6I

mine cuts off when the voltage is low and the led flashes also when it is getting low so no need to monitor the voltage

i just ordered the 6 cell case as just what i was looking for

 

[anotherkiwi]

Prices coming down!

https://www.nkon.nl/rechargeable/other/sanyo-ncr20700b-lithium-battery.html