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Using thyristor regulation, the charging process can be actively controlled without being affected by variations in mains voltage.
The thyristors are controlled by a microprocessor, and by providing the charger with different charging programmes (charging curves), batteries with different characteristics can be charged.

The IU curve allows the charger to give full charging current, often I5 (the battery’s 5-hour current) up to 2.4 V/cell. This makes for shorter charging times than with a Wa charger, or in other words the same charging time but with one charger size smaller.

For 10 years, Micropower has delivered the TTMV charger for a number of different applications. The TTMV charger has been used both for charging valve-regulated batteries and a charger in AGV systems. A number of different charging curves have been developed in collaboration with battery suppliers.

The TTMV charger has been replaced by the MTM charger, which is a more modern variant with new functions such as a real-time clock, predefined charging curves, etc.