Product Manual

18
OPERATION
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12V, IP2, 2
12V, IP1, 1
12V, IPn, n
12V,
I=I I
1+ 2+.......+ I
P=P PP
n
1+ 2+....... n
<20A
<240W
or
......
12V,
Figure 13 Parallel connected solar panels
NOTICE: Solar input exceeding 20 A will trip the PG1800WP’s solar charging
fuse.
CAUTION: Risk of damage to battery pack
Polycrystalline or Monocrystalline modules for in 12 VDC system may be used
for charging the PG1800WP. Using higher voltage panels or amorphous modules
can damage the battery pack.
2.2 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
PG1800WP is designed to regulate the charging process, ensuring the battery
pack is always fully charged, but never overcharged.
CAUTION: Risk of damage to battery
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.
CAUTION: Risk of damage to battery
Do not attempt to charge the PG1800WP’s battery if it is frozen. A frozen battery
should be gradually warmed to 32°F (0°C) before charging.