Alemite 343152 is an 18 VDC battery wall charger for 18 V li-ion batteries used in battery-powered grease gun models 595-a and 595-b. It is a 60-minute charger that monitors the battery during the charging process to enhance battery life. The charger features an LED indicator - red is on for 1 second when the charger is plugged in; 4 Hz flash when in trouble mode; 1 Hz/5 Hz flash when in temperature mode. The Green LED is on - 1 Hz flash when charging; always on when battery is fully charged. Li-ion battery technology has many advantages, including the following: a) 3-times as many charges (compared to NiCd batteries); B) no Memory Effect - The battery can be charged at any time, for any length of time, without loss of capacity; C) 5-times less self-discharge - li-ion batteries can be stored for months without losing charge; D) Fade-Free power - li-ion batteries have consistent level of performance. Alemite offers a large selection of high quality grease gun accessories to ensure durable and reliable performance. Alemite grease guns are built to perform in demanding applications. Unique, innovative designs ensure excellent performance and strong attention to quality production provides maximum durability. With the most outstanding range of products offered, Alemite grease guns and accessories will maximize your lubrication productivity.