sunjoe SJ1440SG, Operator'S Manual

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10
11. With direct sunlight, a typical 60 W solar panel may take
up to 60 hours to fully recharge the generator depending
on the intensity of the sunlight on the solar panel.
12. The battery indicator will display the battery level during
the charging stage.
13. To turn the unit off, press and hold the ON/OFF power
button for approximately 1.5 seconds, release when
the unit beeps. LCD display indicators will turn back to
charging-only mode.
14. To disconnect solar panels, depress locking tabs while
pulling connectors apart (Fig. 13).
Solar Panel Angle (Fig. 14)
Solar panels must be pointed at the sun for maximum power
and it is best to move the panel from time to time during the
day to track the sun.
To get the most from solar panels, you need to point them in
the direction that captures the most sun.
The energy from direct radiation collected by a solar panel
decreases with increasing angle of incidence, as indicated by
the width of the shaded areas. A panel tilted 90 degrees from
the direction of the sunlight cannot collect any of the direct
radiation.
Adding More Sun Joe
®
Foldable Solar
Panels (Optional - Sold Separately)
Connecting solar panels in parallel up to 240 W for a 12 V DC
system is recommended to shorten the charging time. The
maximum output current is limited to 20 A (Fig. 15).
NOTE: Solar input exceeding 20 A will trip the generator's
solar charging fuse.
m
CAUTION!
Risk of damage to battery pack.
Polycrystalline or Monocrystalline modules for 12 V DC system
may be used for charging the generator. Using higher voltage
panels or amorphous modules can damage the battery pack.
• Battery self-discharge and shelf life – All rechargeable
batteries gradually discharge when left idle. Periodic
charging is necessary to maintain maximum battery
capacity. The AC charger built into the generator is
designed to regulate the charging process, ensuring the
battery pack is always fully charged, but never overcharged.
• Due to inherent self-discharge, lead acid batteries must
be charged at least every three (3) months, especially in a
warm environment. Leaving a battery in a discharged state,
or not recharging every 3 months, may cause permanent
damage to the battery.
• Do not attempt to charge the generator’s battery if it is
frozen. A frozen battery should be gradually warmed to 32°F
(0°C) before charging.
Fig. 13
Locking tabs
Fig. 14
Solar Panel Angles
Fig. 15
12 V, I
1
, P
1
I = I
1+
I
2+
......
+
I
n
< 20 A
P = P
1+
P
2+
......P
n
< 240 W
12 V, I
2
, P
2
12 V, I
n
, P
n
......
12 V
Parallel connected solar panels