AW, I have a Digilight NT9 furnished with batteries labeled:
"16340 Li-Ion Rechargeable Battery"
"3.7V 700 mAh with Re/Discharging with Control and Protection Circuit."
Is your battery this thread suitable?
In the Digilight charger which is labeled 8.4V 1A?
If not, what? Digilight is out of business.