ON THE WAY&reg;6Pcs Protected BRC 16340 2000mAh Rechargeable 3.7V Battery w/ICR protection with 16340 Dual-Slot Digital Smart Charger ON THE WAY6Pcs Blue Rechargeable 3.7v 2000mAh 16340 Li-ion Batteries with 1Pc Dual Charger for 16340. These fully protected 16340 cells simplify usage with their integrated ICR, perfect for your single cell application but not for pack building. The 16340 Digital Smart Dual Charger can Charge 1, or 2 16340 Batteries at a Time. Great usage for LED lights, flashlight, photo camera, headlamps etc. 16340 rechargeable battery features a button top making it particularly compatible with many flashlight applications.