I have both the K40 and the K40M. For both lights, when I remove the batteries for charging I usually check the voltages first.
(I do this for all my lights that run more than one cell).
So far, the voltages have always been within 0.1 - 0.2v of each other.
Btw, I don’t like the idea of in-light charging and always use a separate charger. I believe that if the batteries were not charged equally (in-light charging), one is less likely to notice it because the temptation to use the flashlight immediately without checking the individual battery voltage first is greater. That’s something that I always do as well.
Just my 2 cents worth…
The USB charging system that they have has to be pretty simple, it would just be an h-bridge for every cell, I’ve spent some time thinking about it since before they anounced their version. My guess is that they are using questionable parts, or need a better board design with equal resistance between the cells when switching polarity.
I would be interested in buying this flashlight if the price is good and only after Acebeam has resolved the cell recharge/discharge voltage imbalance problems mentioned by FlashPilot on post #1.
Specs updated
Products specifications
LED Cree XHP70 LED with a lifespan of 10+years of run time
Luminance 5000LM
Beam Throw 124100cd Throw 700M
Waterproof IPX-8 2M
hmm… probably cheaper for me if I just open up my K40M and replace the MT-G2 LED with XH-P 70 on Sinkpad II from LEDDNA, I wonder if they use the same driver as it looks like it’s the same body as K40M
I was hoping for around $160-170. I’m sort of torn between this and the Meteor. I doubt you’d be able to tell the difference between 6300lms and 5000lmns, but the extra throw on the K60 would be very noticeable.
I know, I know. But the meteor isn’t easily fitting in my pants pocket, so both the Meteor and the K60 would be ‘grab and go’ lights for me. I don’t like plunger type lights, so the list of factory lights that make 5000+lmns in an unoffensive tint is pretty short.
K50 has 90.2mm head, with an overdriven XM-L2 it can throw about 800m.
K60 on the other hand comes with 88mm head (is the reflector smaller as well?), with XHP-70 and OP reflector it can still throw 700m?
Very good point. I hope review units get out at some point so we can verify. When Acebeam first published data, they had a crazy runtime (like 5 hours) for the High mode. They since retracted that information. I hope they don’t have to retract any of the power data.
