Dolgin Engineering TC40 4-Position Charger for Sony NP-FM500H Batteries

The TC40 Battery Charger is electrically compatible with all 7.2V Li-Ion camera batteries rated 2200 mAh or higher. The modular design allows for different battery models to be charged when the appropriate adapter plate is fitted (This model is used to charge Sony NP-FM500H batteries). With the appropriate power cord, the charger can be powered by a 12V automobile power source. Compatible with Non-OEM batteries.

Batteries
The charger is capable of charging 4 batteries at the same time. It accepts Sony NP-FM500H batteries. The charger must be configured with the appropriate plate to match the battery style. The battery must to be rated at least 2200 mAh capacity, as smaller size battery packs are not designed to accept the charger fast charge.

Charging time
The time to full charge depends on the battery pack rated capacity, its state of charge prior to insertion and its age. A fully discharged new 2200 mAh battery will be fully charged (more than 90%) in about 2.5 hours. A 5600 mAh pack will take approximately 3.5 - 4 hours to charge (4.5 -5 hours when 2 batteries in the same bank are being charged). Since a depleted battery pack absorbs charge current faster, than a partially charged one, most of the charge energy is absorbed during the initial stage of charging and then the rate of charge levels off towards the end.

Charge channels
LEDs indicate each battery's state of charge. Dynamic Power Management (DPM) minimizes battery charge time. By dynamically adjusting battery charge current, more current is allocated to the deeper discharged of the two batteries (in the same bank). Through this process both batteries are ready to use at about the same time.

Charging
Upon plugging the charger in into an electrical source the green and red LEDs will blink every 3 seconds to indicate the charger is powered on. Insert a battery into the battery plate and the charger will initiate the charge routine. While charging is in progress, the red LED will illuminate. Approaching charge completion, the Green LED will blink at 90% readiness level and will be steady ON completion.