Vector VEC092 User Manual

APPENDIX
A
-
CHARGING
TIMES
To calculate
the approximate
charging
time required to
fully charge
a battery, it is
necessary to
determine th
specific
gravity (or, percent
of battery charge)
using
a hydrometer.
Use this technique
if battery vent
caps
ca
be
removed.
Check each
cell. If there is
one cell with
a
very
low
specific gravity
compared to the
other cell:
there is probably
a
shorted
cell in the battery.
Replace the
battery.
The following
chart
converts hydrometer
readings into
percent of charge
values.
SPECIFIC GRAVITY
(HYDROMETER
READING)
1.265
1.225
1.190
1.155
1.120
PERCENT
OF CHARGE
PERCENT
OF CHARGE NEEDED
IN BATTERY
BY BATTERY
100%
75%
50%
25%
Refer to the
chart below for
approximate charging
times.
PERCENT
OF CHARGE 75%
50%
25%
2 AMPS
10 AMPS
20 AMPS
35
AMPS*
6.5 HRS
1
.8 HRS
1
HRS
NR**
12
HRS
3.0
HRS
1
.5 HRS
NR**
N.R***
4.5
HRS
3 HRS
NR**
0%
25%
50%
75%
100%
0%
N.R***
6
HRS
3.5 HRS
NR**
*
For Charging
Batteries
80 to 100 AH
(not for this
example)
**
Not
Recommended for
more than 1
hour
***Not Recommended
because over
18 hrs charging
time.
The times shown
in the chart above
are approximate
and refer
to an average
automotive
battery. For
smalle
batteries,
the charge time
should
be adjusted using the
formula shown
below and
adding 1 hour
to the tim
calculated.
To estimate charging
time for
a discharged
battery, divide the
AH rating
of the battery
by the charge rate
selectee
This is the
number of hours
required to
recharge the
battery. For
example,
a 50 AH
(12
volt)
battery i
discharged
(10
volts). How
long should it
be charged
at the 20 Amp
rate. Divide the
50 AH
by 20. The answe
is approximately
2.5
hours.
Always round
up the charge
time
by
10%
to ensure full
charge. In
most
cases, ba
tery recharge
times will
vary depending
on the
age and condition
of the battery.
Smaller
batteries should
b
charged at
a lower rate
(2
Amps) and
add an extra
hour to charge
time.
VEC091

Vector VEC092 Specifications

General

Brand	Vector
Model	VEC092
Category	Battery Charger
Language	English