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15
Operating Temperature
-40 ⁰F to +140 ⁰F
Meter Operating Temperature
-4 ⁰F to +140 ⁰F
Storage Temperature Range
-40 ⁰F to +185 ⁰F
Temp. Comp. Coefficient
-24mV / °C
Temp. Comp. Range
-4°F ~ 122°F
Operating Humidity
100% ( No condensation )
Battery Charging Parameters
Charging Stages
Soft-Charge
Output battery voltage is 3V-10VDC,
Current = half of the solar panel current
Bulk
10VDC to 14VDC
Current = Rated Charge Current
Absorption
@ 25°C
Constant voltage until current drops to 0.75/1.0 amps and holds for 30s.
Minimum 2 hours charging time and maximum 4 hours’ time out
If charging current < 0.2A, stage will end.
Li-ion
12.6V
LiFePO4
14.4V
LTO
14.0V
GEL
14.1V
AGM
14.4V
WET
14.7V
CALCIUM
14.9V
Equalization
Only Wet (Flooded) or Calcium Batteries will equalize, 2 hours maximum
Wet (Flooded) = if discharge below 11.5V OR every 28 days charging
period.
Calcium = every charging cycle
Wet (Flooded)
15.5V
Calcium
15.5V
Float
Li-ion
N/A
LiFePO4
N/A
LTO
N/A
GEL
13.6V
AGM
13.6V
WET
13.6V
CALCIUM
13.6V
Under Voltage
Recharging
Li-ion
12.0V
LiFePO4
13.4V
LTO
13.4V
GEL
12.8V
AGM
12.8V
WET
12.8V
CALCIUM
12.8V
Charging Parameters Glossary
Equalization Voltage—equalization voltage is a corrective over-charge of the battery. The user
should consult their battery manufacturer regarding specific battery equalization capacity. This
parameter sets the equalization voltage to set the battery at when it reaches the equalization
state.
Boost Voltage—users should check with their battery manufacturer for proper charging
parameters. In this stage, users set the boost voltage where the battery will reach a voltage
level and remain there until the battery undergoes an absorption stage
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