About this item Smart Charge Uses smart chip technology to safely switch to trickle charge near full capacity, preventing overcharging, overheating, or damage to NiMH batteries. Intelligent Safety Protection Automatic power-off and thermal protection prevent overheating, monitored by red/green LED charging indicators. Independent Charging 8 isolated circuits charge 1-8 AA/AAA batteries simultaneously, compatible with mixed NiMH/NiCD sizes. USB High-Speed Charging With a Type-C input, charge anytime, anywhere. Trickle Charge Mode Uses trickle charge to maintain long-lasting performance and maximize battery capacity. Clear LED Indicators Smart LEDs show charging status: Red = Charging, Green = Complete, Flashing Red = Battery Error (damaged or non-rechargeable). Dimensions: 3.05 x 6.1 x 1.14 inches.