PLANET BSP-300 User Manual
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User’s Manual of BSP-300
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In this controller, the pulse‐width modulation is mainly achieved by using the MOS transistor to
control the ON time of the power. By adjusting the pulse width, the target voltage can be achieved.
When the pulse width is wider, the output voltage is higher; on the contrary, when the pulse width
is narrower, the output voltage becomes lower.
Temperature compensation
In order to protect the battery for a longer lifespan and achieve the fully‐charged condition of the
battery, the charge voltage of the battery decreases with increasing temperature and vice versa.
Accordingly, charging with a given voltage requires an increased charge current when the
temperature is high and decreased charge current at a lower temperature. At temperatures below
5°C (41°F) or above 35°C (95°F), temperature compensation for charging voltage is necessary.
Note: For the conditions, under which the battery compensation function of the solar controller is
activated, please refer to “Table of recommended settings for various battery types”.
About Battery
Batteries can be roughly categorized as “chemical” or “physical” batteries.
Usually, the word “Battery” alone refers to a chemical battery. The device used to convert the
energy generated through the oxidation and reduction reactions of some substances of its
constituent materials into electrical energy is known as a chemical battery. On the contrary, the
system which converts light and heat into electricity is known as a physical battery. Batteries, in
general, can be categorized by different sizes, types, ampere‐hours, voltage, and chemicals.
The basic guideline described below is helpful for selecting a battery. Because the batteries from
different manufacturers have different operation requirements, you can configure the controller's
battery parameters to ensure a longer lifespan of the battery. For the operating voltage setting of
the battery, please contact your battery manufacturer.
Batteries for Electrical Vehicle
The batteries for the electrical cars and trucks are designed not for deep cycling but for high