Sure, you could build a bunker, or use a charging bag:
Li-Po GUARD 25x33cm Safety Battery Charging/Storing Bag
(on the stove top, of course!)
This one has my vote
Sure, you could build a bunker, or use a charging bag:
Li-Po GUARD 25x33cm Safety Battery Charging/Storing Bag
(on the stove top, of course!)

A similar thing happened with my Nitecore i4. I ordered it online, so I had to wait a while to get a new charger :-/
I almost just wanted to get a refund and buy a different brand. I was just happy the vendor I ordered it from replaced it.
OP said the charger was back in the box -
New battery?
New charger?
Did you check polarity?
Not trying to bust your chops, is it the charger or the battery that went kablooey?
Well...not good...I recommend NiteCore based upon others testimony...might have to rethink that
Fooey
...technically we shouldn't be charging lithium batteries indoors.
I guess most people just assume they are harmless but they most certainly aren't.
I'm not meaning to be disrespectful or a know-it-all but surely I am not the only one that knows that it doesn't matter what safety features the charger/batteries have or what type of safety enclosure you use or where you operate it...
You never leave a lithium charger charging batteries unattended! You never charge if you are not 100% awake, aware, sober/clean & emotionally/mentally/physically capable of knowing how to use the product(s) safely, appropriately,what can go wrong & how to respond. You also don't use it if you don't have an appropriate fire extinguisher close at hand.


And as far as the fire extinguisher goes ... I am pretty sure you and I are the only two people on ECF that have one handy! I attribute this to the nerd in me. What's your excuse?

No sir. I have one in my kitchen and in my truck. Comes from having a friend that burnt his kitchen down due to throwing water on a grease fire
I bought him one too...
Wow, hope he didn't get injured! My next door neighbor did that. No injury in her case, but she knows now not to do that. It's amazing how many safety issues people are unaware of in general. I guess if these things happened more often it would raise awareness, but that's not a solution I wish for.
Human nature: it will never happen to me ...