7
CHARGING YOUR BATTERY
Your Lithium LiFePO4 battery arrives approx 30% charged
and will require a full charge before use.
CHARGE THE BATTERY
• When the voltage is lower than 12.8V, the battery should be
charged as soon as possible rather than discharging again.
• The charging voltage should be lower than 15V during
charging the battery.
Pending the BMS inside the battery, capacity of the battery
and size of the charger used, a Lithium battery can take
anywhere from 3 to 12 hours to fully charge.
Voltage Capacity
14.4V 100%
13.6V 100%
13.4V 99%
13.3V 90%
13.2V 70%
13.1V 40%
13.0V 30%
12.9V 20%
12.8V 17%
12.5V 14%
12.0V 9%
10.0V 0%
This chart shows the resting
voltage of a lithium battery
compared to its state of charge
in percentage, this is only a guide
and accuracy may vary depending
on what you are using to measure
the voltage. The voltage should
be measured while the battery
is resting, not while charging or
discharging as that will skew the
results. 13.4V or above resting can
be considered fully charged.
CHARGING WITH A BATTERY CHARGER
To ensure that your battery can charge fully and in a
reasonable amount of time, the charger:
• does not have to have a lithium prole to work.
• does need to be the right size for your battery and output
power in the correct voltage range.
• with a Lithium prole, should be at least 10 Amps.
• without a Lithium prole, should be at least 15 Amps, set to
AGM as this tends to be the closest in voltage to what the
lithium batteries want to charge at.
If you have a large battery over 200AH or multiple batteries
totaling more than 200AH then we recommend using a charger
at least 10% of the size of the battery, so a 300AH battery
bank would need at least a 30 Amp charger.
If your charger does not meet the requirements, it won’t
damage the lithium battery due to the inbuilt safety measures,
but it may not charge the battery or only charge to a low level.
If this is the case contact the retailer for a range of Ardent
Lithium Battery Chargers.
