Answer / bhavani prakash

1) By Measuring its VOLTAGE by Multimeter, in case of 12V
battery, it should be between 12V to 14V.

2)By Measuring with HYDROMETER, the SPECIFIC GRAVITY value
should be between 1.19 to 1.4

3) By Measuring the TEMPERATURE that should not exceed
above 41 degree C

In case of VOLTAGE is lower it should be charged with a
CONSTANT CURRENT or CONSTANT VOLTAGE CHARGER to reach the
specific voltage of battery.

In case of SPECIFIC GRAVITY IS LOW, the distilled water
should be added to all the cap holes to certain distances in
the battery and then charged.
If the water and sulphuric acid in the battery turns black
then the battery is dead.

A proper Ventilation should be arranged to limit exceeding
the TEMPERATURE of the battery in charging condition.

The Terminals of the battery should properly cleaned with
PETROLEUM JELLY.
The battery should not be placed under sun light.
It should be cleaned with wet cloth.
For any purpose the battery should not be SHORT CIRCUITED.

Answer / kishan

By using hydrometer,If battery is fully charged its bulb
(having colour as well as number marking) will show green
and 1220 to 1260 number.

Answer / mrudang

in the case of battery

we want to know how the batteries are fully charged
we need to monitoring of three parameters of battery
1) specific gravity value range 1195-1220
2) Temperature not exceed 40-42 celsisus
3) Voltage

if these three value are constant in three hours monitoring
ur batteries are fully charged

i got this experience

Answer / vb

Check the charging current Ammeter if it shows the reading
zero, the battery is fully charged condition.

Answer / vknt

By measuring Specific gravity of electrolyte.
if it is 1.26, battery has been fully charged.

Answer / justin a t

touch the anode or cathode of
battery with ur tougue thr wil be a
shocking effect

Answer / nidhi verma

it's easiest if u can arrange a voltmeter/ammeter. connect
a voltmeter/ammeter and note down the voltage/current.
compare it with the voltage/current ratings given on the
battery. if it's near about the given ratings, the battery
is fully charged else not...

Answer / arvind

By touching the positivr & negative of the battery using a heavy wire, IF THE SPARK IS HEAVY THEN IT IS FULLY CHARGED...

Answer / badshah

By checking the Specific gravity using barometer( i am not
sure about the meter name)..It will be 1.25 if fully
charged..or else it will be less than 1.25

Answer / seemanojyadav

Fully charged battery is more in weight then an uncharged
battery.By looking on it vent plug it seem to contain some
moisture release on during charging procedure.

why we are testing cables with DC supply not with AC supply?

9 Answers   Aurobindo, DEWA, L&T,

How phase displacement change in the over current relay coils.

0 Answers  

How to calculate KW what is the formula for KW.

18 Answers   Toyota, UU,

Why the magneti fields are not passes from southpole to north pole

0 Answers   SGML,

sir, i want to know the calculation for find rated current for cable sizes.(both copper & aluminium) with examole. please sir for example: 35sq.mm al.cable is withstands for how many amps? is suitable for 45kw motor?

5 Answers   L&T,

How REF protects transformer alone? explain with diagram.

0 Answers  

WHAT HAPPEN WHEN A DROP OF WATER MIXED UP WITH TRANSFORMER OIL ?

4 Answers  

What are the Formula of computing Back up Time of 500kVA UPS with 4 Battery Banks, each bank composed of 43 pcs of Batteries 12V150Ah. How to compute the Back up Time of UPS? We have also 3X500kVA UPS running in Parallel same composition as I write above.

0 Answers  

i need the details about bhel exam.how to apply for that.please send to my email-id.thenmozhi2k7@gmail.com

0 Answers  

What is a system?

0 Answers  

Why transformer ratings in KVA not in KW?

6 Answers   ABB,

The current though a branch in a linear network is 2A when the input voltage is 10 volts. If the voltage is reduced to 1 volt, and the polarity is reversed, what is the current flowing through the branch ?

2 Answers