Let me start by saying that there’s no comparison.
The R60C beats the DT70 in every way shape and form.
Even the beam is a softer tint. Like 5000 Kelvins.
So I didn’t spend my nickels in vane.
Now the question:
The DT70 comes with 4 Imalent 3000mAh, protected.
I use this light every day to search for the dogs in the yard. Never more than 8k lumens.
Now when I’m trying to compare the 2 lights, and try to take it to it’s original 16k lumens,
it will go for a millisecond. Then turn off the whole contact. I hafta unscrew and screw it again.
The batteries are fully charge to 4.18v. So they take a full charge.
I’m suspecting the protection chips. It was fine when I bought it, like 6 yrs ago.
Can I use unprotected batteries instead?. Will they damage the light?.
Definitely sounds like the batteries, if they’re six years old they won’t quite be the same either, capacity will be somewhat lower and you’d have greater internal resistance, so yes protection circuits will trip earlier.
It likely could just be one battery that’s degraded significantly more than the others that’s causing the trip, this is where a quality charger and battery tester is useful to find out what’s going on.
With a light that puts out that many lumens you’d also be better off using fairly high drain unprotected batteries for better performance, although this comes at the expense of safety.
One other thing to consider is if at any stage you’ve left the batteries in the flashlight dormant for a long period, a lot of flashlights have parasitic drain which could ruin you’re batteries.
Unprotected batteries should not hurt the light - As long as-
A button top is not required by the battery configuration.
For example, the LT1, Q8 and SP36, all use a brass ring in the head to make contact with the positive end of the batteries.
When the battery tube is tightened, the positive end of the battery scrapes against the brass ring.
A flat top battery will be rubbing the insulation against the ring causing a possible short.
I’m not familiar with the D70 battery arrangement, so this may or may not be an issue.
There are button top unprotected cells available.
Also there are flat tops that stick out enough to be used safely, like the Sanyo GA cells.
All the Best,
Jeff
