good questions
respect for your taking the time to learn more
my thumbnail impressions (not an expert)
LiIon safety in a nutshell
do not drain the battery/cell below 2.5 volts. IF this happens, there is a risk that during recharge the battery will overheat and explode. (IF the overdischarge created electrical reversal inside the cell)
LiIon types
ICR cells require protection…
IMR and INR are safer chemistries, and are often unprotected.
Lights designed for high output, call for high drain cells, and those are unprotected. Anduril lights tend to have built in LVP (LowVoltageProtection)
If the IMR/INR cells are used in a light with built in low voltage cutoff… then all is well for the battery.
separate from issues related to overdischarge, lets consider heat
Anduril lights are capable of high brightness and high heat. They should therefore only and always, be carried locked out.
It is bad for the battery to overheat, so, never tailstand the light on high output levels. Instead, always hold the light in hand, when using hot outputs, and turn the light off, before it gets too hot to hold.
There are also thermal regulation features in Anduril, that let you set the step down temperature, lower… And it is possible to set the ceiling output, to a low enough level not to burn delicate parts. Anduril also lets you select the startup brightness… it can be set low enough not to burn holes in stuff.
just for illustration… what not to do
- Set the light up to come on at turbo, disable thermal stepdown, and drop the light in your pocket, unlocked…
2. When using the light on Turbo, when it steps down, turn it off and back on, over and over again. Wear Gloves, and just hold the end of the tail, where it is coolest. Thereby defeating the thermal stepdown and creating a dangerous overheating condition.
If you read this far, I imagine you can see the errors of those ways
Enjoy your KR4!