2.This D-AA650Bx4 4.8V 900mah battery ni-cd is specifically designed for Exit / Emergency Lights
3. Works for the following models: Compatible with LITHONIA D-AA650Bx4 Dual-Lite 0120859 Ni-CD AA 400mAh 4.8V OSI OSA145 Dantona Custom-145-18 Dantona Custom-145-10 EJW-NI-CAD All Fit E1021R 4.8v 650mah Ni-CD AA 4.8v 800mah Ni-CD AA BYD D-AA650B-4
4.Over-voltage, over-current, over-charge, and short-circuit protection