Thank you for your feedback, what is your runtime ?
I tried searching around for some runtime numbers and found this: TK's Emisar D4V2 review - #264 by ToyKeeper
I don’t have the equipment to measure lumens so I can’t just setup my light around 1000 lumens and see how long it lasts for you. I’m guessing someone on the forum has done extensive runtime testing and can help you with those numbers. It is a fairly small light (barely larger then an 18650) that is capable of putting out 4000ish lumens depending which emitter you select. However its size also means it gets hot quickly at that high output level.
If you are mounting it to a bike, maybe you can fabricate a mount that also has a good bit of metal around the head of the light to help dissipate heat.
Of course a light with a larger head would be able to run at a higher lumen output but also be heavier and more difficult to mount to a bike I would think.
Sorry I’m not more help. Hopefully more experienced people can chime in.
@luka1002, Hi and welcome to BLF.
Would be helpful if you tell us your idea of a price range which would be acceptable for you.
In the past I tried a lot on my handlebar during night rides. Good regulated, and highly efficient compact lights are often pricey.
I am ready to spend about 60 euros.
Sofirn SP 33 v2 is regulated (link ), else v3 is FET (link ). The latter has built in charging. Uses a 26650 format (or 21700 un-protected).
Addendum; Soifrn also has the option of shipping with an included battery - check the distributers in AliExpress.
Thank you, i think that regulated will last longer with same battery, do you agree ? FET is brutal in a matter of lumens.
Usually regulated does not mean longer lasting (and FET is not the only comparison).
But this flashlight (sp33 v2) has very good regulation.
It will give you roughly 1000 lumens for one and a half hours.
Any smaller flashlight or smaller battery will not be able to achieve this.
Depends on use of turbo. Both have their pros and cons. If you already have a good fast charger, the v2 is a good contender, albeit excellent for the price.
There are some lens filters available too. New Sofirn SP33 V3 !! post #162.
All good bike lights have separated batteries and using like 4x18650. For driving you need much more brightness . You dont need to carry all battaries in your pocket so its logical to have separated pawerfull battery pack fixed on bike
Are you sure you need 1000 lumens on mid? That will mean you’re looking at lights rated for 2000 or even 4000 lumens. My dedicated bike light is rated for 2 hours at 350 lumens and is adequate for the riding I do. I also use a Convoy S2+ or BLF A6 with an elliptic TIR optic or stock Sofirn SC31B and get acceptable performance. My rides are on unlit bike paths, lit and unlit suburban streets, and country backroads.
Can you name one? ( separated batteries and using like 4×18650).
Yes, i have bought NITECORE UMS4 as charger. Can you please name pros & coins of Fet & Regulated ?
@Johm thank you.
@Photonica well i need 1000lm, in this situation it will be on high but i have turbo for one step up if needed.
FET - higher output but drops as voltage drain (in turbo). V3 has high at 1600 lm compared to 1000 lm for v2.
V2 has timed step down on max (turbo) but is thermally regulated on v3. UI is has ramp mode also on v3, v2 is only stepped (which I prefer for bike).
Your charger if only at 1 amp will take much time to charge. V3 built-in is 2 amp (half the time) when you forget to charge and notice is low prior to a run.
Another vote for the Lumintop B01. I use one to commute, and it runs forever on a 50E 21700. Not 1000 lumens though.
Have you looked at cheap soda can lights like the Sofirn Q8 or SP36
The SP36 review found it stayed above 1000 lumens for over an hour, and above 500 lumens for over two hours.
The other drawback is that the beam shape is not optimal for biking. If you’re on streets and seeing oncoming traffic, you may need to fashion an aluminum foil or plastic shield.
thank you for explanation. Charger is capable of:
Output Current QC Mode:
3,000mA*1 (MAX)
2,000mA*2 (MAX)
1,000mA*4 (MAX)
Since i have 4 Samsung 18650 3500mAh i will use this mode (1A) only once, every other time i will charge only one or maybe 2 (3A or 2A) so it will be ok.
Lumintop B01 seems to be safe option with a little less lumens... I like Sofirn more, but shipping time to Croatia is 2 months ... I ll make decision today . Thx to you all for helping.
Looks like 2+ hours on high for that one. Short Review of Sofirn SP33 v2 with XHP50.2 - #4 by Pok
Nice 
Onroad or offrad?
Mike