Part No. 90-0113-00
Fdmman2.p65 2/98
Beware of so-called maintenance-free
batteries. These batteries have calcium
alloyed with the lead and hold the liquid
electrolyte in a sponge-like material. They are
sealed and water can not be added. Do not
confuse them with true gel cell or Advanced
AGM batteries, they will not hold up to deep
discharging and repeated cycling.
Gel Cell Batteries
Gel cell batteries are lead-acid batteries
similar in many ways to the common wet cell
battery, but differences in the chemistry and
construction provide some unique features.
• No Maintenance
• Low Self-Discharging
• Low Internal Resistance
Even though gel cells are sealed
batteries, the battery compartment should be
ventilated.
Advanced AGM (Absorbed Glass Mat)
Batteries
This battery is lead acid but
maintenance-free. The performance is similar
to gel cell batteries. The charge perameters
are similar to wet cell batteries.
Battery Selection The most important feature
to consider in making your battery selection is
to select true deep cycle batteries rated in
Amp-hours (AH).
BATTERY INTERCONNECTION
In most cases, you will be using a bank
of two or more batteries with your inverter/
charger. You may connect batteries together
BATTERIES
in two configurations, series and parallel.
Series
Connecting two batteries in series will
double the voltage of the battery bank. For
instance, two 6 Volt batteries connected in
series will produce 12 Volts. The Amp-hour
capacity of the battery bank will be the same
as each individual battery. Example, two 6
Volt 220 Amp-hour batteries in series will
produce one 12 Volt 220 Amp-hour battery
bank.
Series
+
+
+
Series Increase Voltage
EACH BATTERY
CAPACITY:
220
AMP-HOURS
@ 6 VDC
TOTAL BATTERY
BANK CAPACITY:
220
AMP-HOURS
@ 12 VDC
6V
6V
+
+
_
_
+
1
2V INVERTER
_
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