It has a spring on the driver so flat tops will work fine.
18650 cells can vary a lot depending on the model. So if it can maintain a certain voltage under load it will give the full output.
If you want the most run time at 4.5A (regulated output) you need an unprotected high drain battery. There are many to choose like 30Q, VTC6.
If you use a high quality protected battery it will have an extra voltage drop which means it will fall out of regulation sooner. So less time at 4.5A. You would need protection circuits capable of 7A, I think.
Both types will work to give full output, though. If your not sure about a certain battery just ask.
There is a bit of difference since the 30Q is a high drain and the GA is a high capacity.
I like to use HKJ’s battery comparator. Load up both batteries, set it to show 5A and you can see that the 30Q will have less voltage sag giving you more regulated run time. The GA will give you more unregulated runtime.
In the real world you might not notice these differences. Both are good batteries.
I would stay away from the Panasonic NCR18650B, though. I had this picture already so I figured I’d post it.
Even at 3A, the Panny B has big voltage sag. At 5A the sag is even greater. The GA, 35E and MJ1 are all good high capacity cells if you need max runtimes down to the low voltage protection.
I prefer sticking to high drain and swapping batteries once it gets down to 3.7v or 3.6v.
You just need to wait for Martin to send you the purchase info. He’s in Austria so he might be asleep right now. Are you in the same time zone?
Still, if you signed up this morning it seems like he should have sent you the info earlier today. There are plenty of lights, so no need to rush. I’m sure he will contact you soon.
Well, yes…actually Austria and Germany are in the same time zone and very close together. We even speak the same language.
No need to rush…I can certainly wait. I was just a bit suprised how many people wrote today something like “yeah, just ordered”, so I was wondering if there’s anything else to do from my side.
Thank you JasonWW!
I’m still looking for a runtime on high estimate - would this calculation give a good approximation? 3000mah = 3ah, 3ah/4.5a = 0.66hr, so 40min on high.
It’ll be more complicated than that because at some point the voltage will drop below the threshold required to maintain the 4.5A current draw. At that point, brightness will start decreasing, but so will current draw.
End result is the total runtime will be longer than 40 minutes, but the runtime at max brightness will be less.