The Secure Battery The integrated electronics protect the cell from overcharging, overload, short circuit, and deep discharge. Therefore, the battery is perfectly safeguarded against improper handling, ensuring a long lifespan. The Perfect Replacement for Batteries The high-quality lithium-ion (Li-Ion) battery from ANSMANN is the ideal substitute for 1.5 V alkaline disposable batteries or rechargeable 1.2 V NiMH batteries. While some battery-operated devices have issues with the lower output voltage of NiMH batteries, the 1.5 V Li-Ion battery is fully compatible with alkaline batteries. In addition to being rechargeable, it also impresses with built-in electronics that provide a consistent output voltage of 1.5 V for more than 95% of the operational time. When the battery has about 5% remaining capacity, the output voltage is reduced to 1.1 V to signal to the user that the battery should be replaced. Easy Charging via USB Thanks to the integrated USB-C charging port, no additional chargers are necessary! This allows 4 micro AAA batteries to be charged simultaneously with just one cable. This ensures safe and simple charging through all available USB charging options. The indicator on the positive terminal of the battery blinks during the charging process. Once charging is complete, it lights up continuously. Lightweight, Low Self-Discharge, and High Cycle Stability The micro AAA Li-Ion battery is extremely durable and can be recharged up to 1200 times even under tough conditions. Due to its very low self-discharge, the battery retains its energy over an extended period, even when not in use. In addition, the weight of the Li-Ion cell is significantly lower compared to traditional battery technologies (e.g., NiMH/PB) at the same performance level.