Uniteck UNIMPPT 60/30.24S Manual De Usuario página 33

ALGOTECK CHARGING CURVE (CONTINUED)
CHARGING CURVE REGULATION DEPENDING ON THE BATTERY TECHNOLOGY
To perfectly recharge all lead acid batteries, Unimppt adapts its loading curve according to the " battery's
technology" previously selected:
"Liquid" Battery Mode:
Liquid electrolyte batteries require higher loads to avoid any stratification of the electrolyte. Stratification
is a non-homogenous blend of the electrolyte. Acid is concentrated at the bottom and the water at the
top (due to its lower density). This phenomenon leads to freezing risks or oxidation of the plates. To
avoid this, Unimppt uses (in liquid batteries mode) an equalisation charge that mixes the electrolyte,
which is essential to preserve the lifespan of your battery.
"AGM" Batteries Mode/ "GEL" Batteries Mode :
Hermetic batteries (AGM or GEL) require a precise control of the charge voltage to avoid gaz leaking.
Leaking is an electrochemical reaction that leads to the release of oxygen and hydrogen gases inside the
battery when the battery voltage reaches a point named "gasification voltage".
This voltage is different depending on the type of the batteries (AGM or GEL). Depending on the selected
mode, Unimppt releases a voltage level adapted to the technology of your battery to recharge up to
100%.
Regulation by external temperature
Chemical characteristics of the battery vary depending on the ambient temperature. With its external
temperature sensor, Unimppt adapts its charge voltage precisely in relation to the reference temperature
of 25°C, of +/- 30mV (+/-60mV - 24V by °C), which avoids overloads and under loads.
INTEGRATED PROTECTIONS
For a safe use, Unimppt has several protections in place that preserve the solar charge controller, the battery
and the consuming devices in output:
Protection against panel polarity reversal,
-
- Protection against panel short-circuits,
- Protection against reversed current: prevents reversed current towards the solar
panel during the night.
- Protection against battery polarity reversal,
- Thermal protection.
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