MPPT Shiner2410 User Manual Download

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Select such battery types as SLD/FLD/GEL/USE, and select the appropriate system voltage.
As shown in Fig. 4-1, the charging stages of lead-acid battery are: MPPT charging, constant voltage charging (equalizing/
boost/ﬂoating charging), and current-limiting charging.The constant voltage charging is divided into three stages:
equalizing charging, boost charging and ﬂoating charging:[MPPT charging] When the battery voltage has not reached the
target constant voltage value, the controller will perform MPPT charging. When the battery voltage reaches the constant
voltage value, it will automatically exit MPPT charging and switch to constant voltage charging (equalizing/boosting/
ﬂoating charging).
[Equalizing charging] Regular equalizing charging is good for some batteries. Equalizing charging is mainly to make the
charging voltage of battery higher than the standard supplementary voltage, besides, it can vaporize the battery electrolyte
to balance the battery voltage and complete relevant chemical reaction. Equalizing charging and boosting charging are
not repeated during one full charging to avoid excessive gas evolution or overheating of the battery.
Notes:
1) Since the equalizing charging of ﬂoored lead-acid battery produces explosive gas, the battery compartment must be
well ventilated.
2) Although the equalizing charging elevates the battery voltage, it may damage the level of sensitive DC loads,
therefore, it is necessary to verify that the allowable input voltage of all loads in the system is greater than the set battery
voltage value in equalizing charging.
3) Excessive charging and excessive gas evolution may damage the battery plate and cause the active substances on the
battery plate to fall off.Besides, excessive high equalizing charging voltage or excessive long equalizing charging
duration may damage the battery. Please set relevant parameters according to the speciﬁcations of the battery used in the
system.
[Boost charging] The duration of boost charging is 2 h (default). When the duration reaches the set value, the system will
switch to ﬂoating charging.

[Floating charging] Floating charging is the last constant voltage charging stage in the charging cycle of lead-acid battery.
The controller keeps the charging voltage constant at the ﬂoating charging voltage. At this stage, the battery is charged
with a very weak current to ensure that the battery is in full-charging. When the battery voltage is as low as the reconnect
voltage of boost charging, the system will exit the ﬂoating charging stage and re-enter the next charging cycle.

Fig. 4-1 Charging curve of lead acid battery

Charging
voltage

Time

Equalizing charging voltage

MPPT

Boost charging voltage

Floating charging voltage

Charging reconnect voltage

Constant voltage

Floating

Charging
current

Time

Select such battery types as LI/USE LI, and select the system voltage from 12V/24V.
As shown in Fig. 4-2, the charging stages of lithium battery are: MPPT charging/boost charging/
current-limiting charging.
[MPPT charging] When the battery voltage does not reach the target constant voltage value, the controller
conducts MPPT charging to charge the battery with maximum solar power, when reaches, it automatically
switches to boost charging.
[Boost charging] In the boost charging stage of lithium battery, when the battery voltage is lower than
the boost charging voltage, the system conducts MPPT charging or current-limiting charging, when
reaches, it switches to boost charging.

Time

Charging
voltage

Fig. 4-2 Charging curve of lithium battery

Charging

Boost charging voltage

MPPT

Constant voltage charging

1) Connect the temperature sensor to the corresponding temperature interface to achieve the high and
low temperature protection for the battery and the temperature compensation for the charging voltage
of lead-acid battery (no temperature compensation for the lithium battery); if the temperature sensor is
not connected, the default temperature is 25°C;

2). For the battery-related temperature protection/recovery value, please refer to the description in "12.
System alarm". The wiring method is shown in the ﬁgure:

1) [Recovery strategy of load short-circuit protection]:

①

Automatic recovery: the self recovery time of the first protection is 10s, the second is 15s,

the third is

20s, the fourth is 25s, the ﬁfth is 30s, with more than ﬁve times restore the load output

② Manual recovery: press and hold the "SELECT" button for 2s on the system alarm interface,
and the

load will be recovered and output;

2) [Overload protection strategy]: 10s protection for the load greater than 1.25 times the rated load; 5s

protection for the load greater than 1.5 times the rated load; 1s protection for the load greater than

2 times the rated load;

3) Please refer to "8.11-8.13" for load related settings.

4. Charging