Battery Testing Procedure; Battery Charging Circuit Test - Vento Phantom R4i Service Maintenance Manual

NOTE: All the resistance value are measured with reference to ground wire (Black)
Remove the battery from the Motorcycle/Scooter. Connect the battery on load tester ensuring Red lead of
tester to (+ve) and Black lead to (-ve) terminal of battery .Check the terminal voltage of battery. It should be
12~14.5 Volts. Press the push button on the tester and watch the voltmeter reading on load. The battery
voltage should not drop down less than 9 volts; this indicates that the battery is perfect to take load of self-
starter motor. Check the specific gravity of each cell should not be less than 1.220.Put the battery on charge, if
required and carry out load test.
Diagnose the nature of failure as under:
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BATTERY CELL DEAD TEST: On load if battery voltage is found less than 9.5Volt and one or more cell shows
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specific gravity less than 1.220 then change the battery.
OPEN CIRCUIT: During the charging of battery does not pickup the charge. In any of the above case, replace
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the battery.
RECOMDED BATTERY LOAD TESTER: MAKE—ELAK, MODEL: ---BCT7
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CAUTION: During Inspection, if the battery on the vehicle is found defective, before replacing with a
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new battery, it is important to check the battery charging circuit.

BATTERY CHARGING CIRCUIT TEST

The MAGNETO generated AC current, which is rectified into DC current by Voltage Regulator .It is
automatically charging the battery depending upon condition of the battery, load and engine rpm. Regulator is
connected in parallel to the circuit. Hence this type of system is called "PARALLEL LOAD REGULATOR".
Connect DC Voltmeter and DC Ammeter, start the engine with fully charged good battery. The Voltage
Regulator output is as follows.
Battery charging current range in between 0.6 Amp to 2Amp.
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VENTO MOTORCYCLES
The engine speed @ 5000 rpm with headlamp on condition.
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Battery terminal charging voltage > 11.5 V at any load condition (depending upon the condition of
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battery)

BATTERY TESTING PROCEDURE

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