charger in MICROTEK Inverter is of Multi-Stages. The charging is
divided into various modes depending on the voltage of the battery.
charging stage applies only, if for some reason, your battery has
gone under deep discharge conditions. In this mode (until battery
reaches to a minimum specified charge level) the charging currents
is very low to avoid any excessive heat produced inside the battery.
It is kept very low because the battery internal resistance is very,
very high and using a high charging current may cause a rapid rise
in the internal battery temperature which would shorten its life.
This technique or method of using low charging current will not
reduce your battery life cycle if your battery has gone under deep
In Bulk charging stage, the Microtek unit charges the batteries
at the full charging current. i.e. 12 AMPS, so that this charging
takes place at the fastest possible speed
second stage of charging is Absorption. When the battery is 80%
charged the Microtek unit will start reducing the charging current
of the batteries in the steady fashion. As the battery is being
charged to 100%, charging is reduced to negligible current.
/ Trickle Charging Mode
batteries reach full charge, charging voltage is reduced to a lower
level to reduce gassing (boiling of electrolyte) and prolong battery
life. This is often referred to as maintenance charge, as it does
not charge the battery but keeps an already-charged battery from
batteries may attract dust, dirt and grime over time. Keeping them
clean will avoid problems associated with grime. In the event of
that all vent caps are tightly in place.
the battery top with a cloth or a brush and a solution of baking
soda and water.
cleaning do not allow any cleaning solution, or other foreign
matter to enter it.
with water and dry with a clean cloth.
battery terminals and the inside of clamps using sandpaper. (Clean
terminals will have a bright metallic shine).
clamps to the terminals and thinly coat them with petroleum jelly
the area around batteries clean and dry.
Ratings and Their Meanings
most common battery rating is the AMP-HOUR RATING. This is a unit
of measurement for battery capacity, obtained by multiplying a current
flow in amperes by the time in hours of discharge.
A battery which delivers 5 amperes for 20 hours is said to be of
100 ampere-hours or 100AH.
the Series Connection, batteries of like voltages and Amp-Hour capacity
are connected o increase the voltage of the banks. The positive
terminal of the first battery is connected to the negative terminal
of the second battery and so on, until the desired voltage reached.
The final voltage is the sum of all battery voltages added together
while the final AMP-HOURS remains unchanged. The bank’s Voltage
increases while its AMP-HOURS remains.
the Parallel connection, batteries of like voltages and capacities
are connected to increase the capacity of the bank. Positive terminals
of all batteries are connected together and all negative terminals
are connected in the same manner. Final voltage remains unchanged
while the capacity of the bank is the sum of the capacities of the
individual batteries of this connection.
are various common power problems that UPS units are used to correct.
They are as follows (with a typical example of damage that might
failure — Total loss of utility power: Causes electrical equipment
to stop working.
sag — Transient (short term) under-voltage: Causes flickering
spike — Transient (short term) over-voltage i.e. spike or peak:
Causes wear or acute damage to electronic equipment.
(brownout) — Low line voltage for an extended period of time:
Causes overheating in motors.
— Increased voltage for an extended period of time: Causes light
bulbs to fail.
noise — Distortions superimposed on the power waveform: Causes
electro magnetic interference.
variation — Deviation from the nominal frequency (50 or 60 Hz):
Causes motors to increase or decrease speed and line-driven clocks
and timing devices to gain or lose time.
transient — Instantaneous undervoltage (notch) in the range of
nanoseconds: May cause erratic behavior in some equipment, memory
loss, data error, data loss and component stress.
distortion — Multiples of power frequency superimposed on the
power waveform: Causes excess heating in wiring and fuses.