What was found
CABIN EMERGENCY LIGHTS BEGAN TO FLASH DURING CRUISE. IT WAS BROUGHT TO OUR ATTENTION BE PAX. REMOVED FAULTY FWD EMERGENCY LIGHT BATTERY, P/N: 7450L5-00, S/N: 006102. REMOVED FAULTY AFT EMERGENCY 7450L5-00, S/N: 006097. INSTALLED NEW FWD EMERGENCY LIGHT BATTERY. P/N: 7450LS-00, S/N: 007421. INSTALLED NEW LIGHT AFT BATTERY, EMERGENCY BATTERY P/N: 7450L5-00, S/N: 007209. ALLOWED TO TOP. CHARGE. OPS CHECK GOOD. WORK PERFORMED IAW EMBRAER PHENOM 300 AMM 33-52-01.