- Sep 23, 2018
I think I'll buy 2 of those Efest 16340 850 mAh batteries. I really need the batteries to arrive in December. I think I'll also buy that Opus BT-C3100 charger you've been talking about. It costs 30 euros on aliexpress https://www.aliexpress.com/item/Opu...lgo_pvid=269e23c7-8f11-4c0b-baf6-32c345ad6293 So with the Opus charger I wouldn't over discharge the batteries? The problem is the charger would arrive after the batteries. The batteries will be precharged so I assume I could use them in my laser before the charger arrives, couldn't I?If you end up with unprotected cells, it is still possible to over discharge your batteries before you become aware of it. You would do better with protected cells as they will shut off before they become over discharged. I suspect you can get items from GearBest where you are and they have some good chargers on their site.