CR2016 Lithium battery pack number of batteries:20 pcs Lithium Button Cell Battery CR2016-Long Barrery Life,CR2016 Battery Executive standard:GB/T 8897.2-2008 CR2016 3V Lithium battery also known as: DL2016, CR2016N, ECR2016, BR2016, BR2016-1W, CR2016N, KCR2016, LM2016 Lithium battery CR2016 Usage: Votive Candles,Tea Light Candles,Watch, computer, calculator, IC cards, electric key and other electric products CR2016 Lithium battery Lightweight, High Voltage and High Energy Density