Bad Battery Detection

Energizer Universal Charger is a versatile, fast-charging station designed for NiMH rechargeable batteries of all standard sizes (AA, AAA, C, D, and 9V), ideal for home healthcare and clinical settings using multiple medical device types . Key specifications: charges 4 AA batteries in approximately 5 hours; accommodates 2 or 4 AA, AAA, C, or D batteries or 1 or 2 9V batteries simultaneously; LED light bar shows real-time charging status; built-in safety features include auto shut-off (Delta V cutoff), reverse polarity protection, bad battery detection, and overcharge protection . Features compact design with built-in adapter and detachable cord for easy storage; ENERGY STAR certified for energy efficiency . Compatible with all standard NiMH batteries (Energizer Recharge batteries recommended). For clinicians, this charger is indicated for NiMH batteries only—do not use with alkaline, carbon zinc, lithium, or NiCd batteries. WARNING: For indoor use only. Not intended for use by young children without supervision. Never use extension cords .