MEC
–Energietechnik GmbH
INSTRUCTION MANUAL
Nova-100IS
Vers.: 3/2015
Page 3 of 4
www.mec-energietechnik.com
5. Operation
ATTENTION:
Before operating please make sure that the power cable and the charger including the charging cable show no damages and make
sure that the mains supply complies with the specification.
Please consider the charging instructions from the battery manufacturer before charging.
If you want to connect the charger to the battery, please have a look to the following points:
Make sure that the device is switched off and disconnected from the mains.
Connect the terminals to the battery.
Connect the power cable to the mains supply and switch ON the device.
6. Charging the battery
The charging process starts automatically and runs through the following four charging phases:
1. Charging phase: auto wake-up
This charging step is indicated by
blinking alternately of the Charge-LED
(4)
and Full-LED
(5).
Explanation:
The precharge phase starts automatically at deeply discharged batteries (where the BMS is off). During this phase, the
charger use controlled current pulses. That tries to reactivate the BMS and bring the battery in a voltage where it is possible to start the
charging process.
2. Charging phase: soft start
This charging step is indicated by
constant lighting of the Charge-LED
(4).
Explanation:
During the soft start phase the charger reduces charging current, in order to extend battery lifetime.
3. Charging phase: constant current
This charging step is indicated by
blinking slowly of the Charge-LED
(4).
Explanation:
During the constant current phase, the battery is being charged to ~80% of its capacity.
4. Charging phase: constant voltage
This charging step is indicated by
blinking quickly of the Charge-LED
(4).
Explanation:
During the constant voltage phase the battery is being charged to its maximum capacity.
After reaching the maximum capacity the
green Full-LED is constantly shining.
The charger can now be disconnected from the battery or remain connected to the battery (see Auto-restart function).
Auto-restart function
As long as the charger remains connected to the battery, the device will automatically restart the charging process after 30 days or a
drop in battery voltage below 3.8V / cell.
Disconnect the charger from the battery
a) Switch off the battery charger;
b) Disconnect the battery charger from the battery;
When disconnecting the battery from the device during charging process, please disconnect the charger from the mains
immediately. A continuation off the charging process is equal to a new charging cycle; all relevant points of the Operating
Instructions have to be considered.
After disconnecting the charger from the mains, please
wait at least 5 seconds
until reactivating the device
– otherwise this
may result in damage.
Battery care:
- Never expose the battery to high temperatures, as this causes permanent battery capacity loss.
- Never deep-discharge or overcharge the battery, cells can be damaged irreversibly.
- If possible, always disconnect the battery from the load when being stored over long periods of time.
- Store battery in a dry and cool place at about 40-60% of its rated capacity.
Please consider the charging instructions from the battery manufacturer!
7. Errors and Troubleshooting
Table 1: General errors:
Error description
Solution
No LED lighting or blinking after connecting mains
Check if charger is connected to mains supply
Check function of mains supply
Green Mains- LED is on, charger is connected to battery and
the charging process don’t start
Check connection to battery
Check if battery is damaged or deeply discharged
Error- LED blinking (N x blinking / 2 sec pause)
Please see the table below for error description