External Laptop Battery Charger for ASUS M9xx W7xx, A32-M9, A32-W7 A33-M9 A33-W7
ASUS W7 Series ASUS M9 Series Ideal for charging your spare battery outside the laptop. - with built in reverse polarity protection (if battery cable is connected incorrectly). - LED flashes fast, color RED -> no communication with the battery.