I brought two Lumintop B01 lamps after following "Ebike light powered by 18650 pack"
https://yacf.co.uk/forum/index.php?topic=122911.msg2719606#msg2719606Seemed that two lamps and four batteries could be a good PBP battery option.
I was concerned that the quoted run-time maybe 'optimistic' so here is my light tester
I'm really only interested in the medium 260 Lumen setting. Datasheet quotes 11h15min with a 21700 cell
Test runtimes : light 'A' 9h50m 'B' 10h21m. At this point the light switches to low power (15 Lumens) After 12 hours it was still running when I gave up.
Testing the B01 with a bench PSU : Medium power draw is 1.65 Watts (0.44A@3.74V), the lamp switches to low power (15 lumens) at 3.0 volts*.
I meausured battery 'A' using an active 1.6 watt constant power load, 9h24m to 3.0 volts (15 w/h).
Capacity to 2.5v was 16 w/h.
The 21700 is nominally 18.5 w/h to 2.5 volts, cell A is 86% of nominal capacity. CBA to test B using the active load.
My Schmidt is away for repair so this will be my PBP lighting setup I expect a lot of night riding Northern France late August worst case is 5x9 hours, 21:00-06:00
Weight; 70g per 21700 cell - lamps are 82g each.
Quote below from original Ebike topic
Picked up a Lumintop B01 flashlight on aliexpress which takes a 21700 cell and has a "designed according to STVZO" beam. Yet to try it on the road but it has a 11 hour medium 260 lumen mode which could work well.
That looks like a neat little thing. I'd rather have an all in one light, instead of wires to a separate battery pack. And USB-C charging built in is handy.
Wondering if it is any good. The mount looks a bit flimsy, does it hold it in place securely?
It is a bit cheaper than the equivalent Fenix bike lights anyway.
Haven't been for a ride with it yet but hoping it is good as it seems the easiest option (with x number of spare 21700 cells). Hoping to try it out tonight.
It's got a downward pointing emitter and a reflector so hopefully the beam pattern is good.