Sentry Lithium Series User manual

Warnings
• Keep battery away from exposure to heat,
high voltage and direct sunlight.
• Never short circuit the positive and
negative terminals.
• Never ship or store battery along with
metal.
• Never disassemble the battery.
• Never knock, throw or impact the battery.
• Never throw the battery into water.
• Never install in under bonnet applications.
Tips
• If battery cuts out on low voltage
immediately disconnect load – Low voltage
cut o device strongly recommended at
9.5V.
• If battery gets below 9V, charge battery
within 15 days.
• Battery should be charged every 6 months.
• Ideal storage temperature -20oC – 35oC
• Do not leave battery in low state of charge
for long periods of time.
• Keep battery away from high temperatures
• If battery shows signs of deformation, heat
or emits smell, immediately discontinue use.
Charging
A standard Constant Voltage (Automatic)
SLA Battery charger can be used to charge
the Sentry Lithium batteries however the
following requirements must be met:
• Charger must not contain Sulphation/
Equalisation setting. If so then this step
needs to be turned o.
• Maximum charge voltage of 14.6V
• Recommended float charge voltage 13.9
+/- 0.1V.
• It is not recommended to have batteries sit
on float charge for an extended period of
time.
• Please ensure your charger is matched
to the current rating of your battery and
take note of the recommended charge
current in the batteries specification sheet
– Normally half the batteries rated capacity.
For example SNL12V100S – Recommended
charge current = 50A.
• A charger with LiFePO4 setting is
recommended.
Welcome to your new
Sentry Lithium LiFePO4 Battery.
Please read the instructions and warning on
this card carefully to ensure you get the most
out of your battery.

Series and Parallel of batteries
There are strict conditions under which the Sentry
Lithium Range can be configured into Series OR Parallel
systems. Please note these conditions below.
• Not all SNL batteries can be configured into a Series
or parallel system. Please note the part number of
the battery. If the Part number contains an “S” sux
example SNL12V100S. Then this denotes that the
battery can be configured into a system of up to, but
not exceeding 4 batteries in Series.
• If the part number does not end in an “S” for example
SNL12V100BT, then series configuration is strictly
prohibited.
• All Sentry lithium batteries can be configured into a
parallel configuration up to 4 units in parallel under the
conditions outlined below.
Parallel Configuration
1. Ensure all batteries to be in the parallel configuration
have been fully charged individually by matched
chargers.
2. Ensure OCV of each battery is less than
<0.2V of each other.
3. After charging, set aside and allow to rest for 8 hours.
4. Utilising wires of circumference large enough to carry
required current (>100A), connect the batteries in
the above (Fig 1) configuration. Ensure all connecting
cables lengths are of the same length.
5. Be careful not reverse connect the Positive and
Negative.
6. Ensure correct charge voltage and current is utilised
for configuration.
7. Max Charge Voltage - SNL12V… 14.6V / SNL24V….
29.2V.
8. It is absolutely prohibited to series a paralleled
configuration.
9. Once in Parallel configuration ensure a full charge is
completed a min of every 3months
10. Once in Parallel configuration, the system must be
charged and discharged as a system. If one batteries
needs to be replaced, the whole system will require
replacing.
Series Configuration
1. Check Part number contains an “S” on end
to ensure the battery is suitable for Series
configuration.
2. Ensure all batteries to be in the parallel
configuration have been fully charged individually by
matched chargers
3. Ensure OCV of each battery is less than <0.2V of each
other.
4. After charging, set aside and allow to rest for 8 hours.
5. Utilising wires of circumference large enough to carry
required current (>100A), connect the batteries in the
above (Fig 2) configuration. Ensure all connecting
cables lengths are of the same length.
6. Be careful not reverse connect the Positive and
Negative.
7. Ensure correct charge voltage and current is utilised
for configuration:
A. SNL12V… 14.6V / SNL24V…. 29.2V
B. Two batteries in Series – 29.2
C. Three Batteries in Series – 43.8V
D. Four Batteries in Series – 58.4V
8. It is absolutely prohibited to parallel a series
configuration.
9. Once in Series configuration ensure a full charge is
completed a min of every 3months
10. Once in Series configuration, the system must be
charged and discharged as a system. If one batteries
needs to be replaced, the whole system will require
replacing.
ANODE
PACK 4 PACK 1
CATHODE
FIG 2
ANODE
PACK 4 PACK 1
CATHODE
FIG 1