As with all lithium-ion batteries, the Ultra-M 4.0 Ah does not have a memory effect. It can be charged at the user’s convenience without having to wait for the battery to totally discharge and does not lose any of its charging capability.
These lightweight, compact batteries feature Metabo’s patented air-cooled charging technology that cools the battery pack to a level temperature during charging using guided air flow ducting.
This unique charging technology increases productivity by shortening the charging process and helps sustain the life of the battery by keeping individual cells cooler during the charging process.
The Ultra-she Ultra batteries, the Ultra M 4.0 Ah batteries feature Metabo’s state-of-the-art cell monitoring system, Electronic Single Cell Protection (ESCP), that electronically monitors the individual cells during the charging and discharging process to prevent damage as well as to prolong battery life. The batteries and charger are covered by Metabo’s three-year warranty; if they don’t charge, they are replaced at no cost.
Metabo, a leading international manufacturer of professional grade portable electric power tools and abrasives for industrial, construction and welding applications, has international headquarters in Nurtingen, Germany and U.S. headquarters in West Chester, Pennsylvania. The company has focused its product development on technological advancements in electronic circuitry and mechanical design, which has resulted in high performance, durable electric power tools. The name Metabo is German for “metal-boring,” symbolic of the company’s first tool — a metal-boring tool — manufactured in 1924.