EarthX ETX1600 User manual

EarthXLithium
BatteryUser’s
Manual
Copyright© 2023 EarthX, Inc. All rights reserved. The information contained in this document is the property of EarthX, Inc.
EarthX reserves the right to make changes to its documents or products without notice. It is the responsibility of each user to
ensure that all applications of EarthX’s products are as intended and safe based on conditions anticipated or encountered during
use. The EarthX logo is a trademark of EarthX, Inc
11017_AB

ETX- S E R I E S L I T H I U M B A T T E R I E S
Table of Contents
Overview...........................................................................................1
Technology Inside............................................................................. 1
Battery Cells....................................................................................1
ETZ-Series - BMS...........................................................................2
ETX-Series - BMS...........................................................................2
ETX-Hundred Series - BMS............................................................3
Operating Instruction.........................................................................4
Normal Operation............................................................................4
Abnormal Operation........................................................................4
Monitoring .......................................................................................4
Limitations.........................................................................................5
Specifications.................................................................................... 6
Discharge Versus Temperature....................................................... 22
Self-discharge Rates....................................................................... 23
Discharge Curves............................................................................ 23
Installation....................................................................................... 25
Battery Installation.........................................................................25
Fault Monitoring Installation (ETX-Hundred Series)......................26
Voltage Monitoring Alert Recommendation (Existing Aircraft Equipment if
applicable).....................................................................................30
Vent Tubing Installation (Model with part # that end in VNT) ........31
Battery Inspection and Testing........................................................ 35
Charging ......................................................................................... 36
Storage ........................................................................................... 39
Warranty ......................................................................................... 39
Troubleshooting .............................................................................. 40
Regulations..................................................................................... 41
Terminology .................................................................................... 41
I C O N K E Y
Valuable information
Caution

ETX- S E R I E S L I T H I U M B A T T E R I E S
1
Overview
EarthX Lithium batteries are designed as a maintenance free replacement for the 12-volt
lead-acid or lithium batteries. To ensure a smooth replacement process, our batteries are
similar in dimensions to many OEM motorsport or power sport batteries. Our 12V
replacement lithium battery consists of 4 Lithium Iron Phosphate (LiFePO4) cells in series
and one or more in parallel with built in electronics to protect the lithium cells.
Our lithium cells together with our Battery Management System (BMS) create the safest
lithium battery on the market, with more starting power, and longer life.
The common features of our Lithium Batteries.
•Flexible battery connection –with center mounted terminals and terminal adapters,
the same batteries can be used in either left or right-side polarity applications.
•Longer Storage Life –there is no need to float charge in the off season if outside of
vehicle.
•Environmentally Friendly –no hazardous chemicals and it can be recycled.
•Fast Charge –can be fully charged in less than an hour (if charged at the maximum
recommended charge rate)
•Maintenance Free!
•No Special mounting direction (could even be mounted up-side-down)
•Will Not Freeze or Boil Over –Lithium batteries are dry cell technology and will not
freeze or boil ever.
Failure to follow all application use, installation, charging, and storage instructions may result
in battery damage and or fire!
Technology Inside
Battery Cells
Our batteries use cells made of Lithium Iron Phosphate (LiFePO4). This chemistry is one of
the highest performing and safest on the market today.
Lithium batteries are fundamentally different than lead-acid batteries. A lithium battery
voltage remains relatively constant while discharging, while voltage for a lead-acid battery
decrease. A lithium battery’s storage capability is nearly 100% usable (measured as Amp-
Hour, Ah); while a lead-acid battery designed for motorsports typically only has 30% useful
storage. As such, a 2Ah lithium battery has the equivalent “useable” capacity to a 6Ah lead-
acid. Also, a lithium battery’s cranking power is stronger, for the voltage while cranking is
generally higher. But when the lithium battery runs out of power it does so more abruptly.

ETX- S E R I E S L I T H I U M B A T T E R I E S
2
LiFePO4cells by the nature of their chemistry are 3.3 volt. 12V lithium batteries are created
by using 4 cells in series (technically it is a 13.2-volt battery, but nominally full charge voltage
is >13.3V). Lead-acid batteries are made with 6 cells in series. Another difference is that
lithium cells are dry cell technology, where the cells are packaged individually. As such, the
individual cell’s charge level will diverge with repeated charge/discharge cycles and age. This
condition reduces the performance of the battery (reduces capacity), for the battery charge
level is only as good as the charge level of the weakest cell. Moreover, charging a battery
with unbalanced cells results in one or more cells reaching the maximum charge (voltage)
level before the rest of the cells in the series, which leads to over-charging of the cell(s) and
eventual failure.
ETZ-Series - BMS
All EarthX integrated BMSs continuously monitor each cell’s voltage as part of the cell
balancing and over-charge protection. If the voltage of a cell exceeds the others, the BMS
circuits will work to reduce that cell’s charge level. This ensures that the charge level of all
the cells remains equal, even with the high discharge (> 100Amps) and charge current
(>10Amps) of your vehicle.
A cell can be permanently damaged if over-charged (over-voltage) just one time. The BMS
has circuitry to block incoming current to the battery from the charging system if the voltage
exceeds 15.5 volts (an over-charge condition). Once the voltage level is below 15.5V, the
BMS will automatically reset itself. The ETX-Hundred Series batteries have enhanced over-
charge protection; see the ETX-Hundred Series section below for more details.
The ETZ-Series BMS has short circuit protection, but it is not resettable or repairable.
ETX-Series - BMS
The ETX-Series BMS has all the features of the ETZ-Series, plus over-discharged protection
(completely draining the battery), excessive cranking protection, and short-circuit protection.
The BMS disconnects the battery from the load if it is drained to less than 5% remaining
charge (an over-discharge condition). An over-discharged battery typically has a voltage less
than 11.0V. If the BMS disconnects the battery, the voltage reading of the battery will be
zero volts.
Excessive cranking protection logic includes temperature monitoring to limit “high current
use” (engine cranking) to 2 -35 seconds in any 60 second period.
If the battery terminals are “shorted” (or a low impedance load is connected across
terminals), which causes the battery volts to instantaneously drop to a very low level, the
battery will disconnect from the load to protect the cells and BMS from damage (short
circuit protection). If the BMS disconnects due to excessive cranking protection or short
circuit protection, the BMS will automatically reconnect after a cooldown period (typically 1-
3 minutes). The ETX-Series is designed for short circuit protection > 1000 Amps.

ETX- S E R I E S L I T H I U M B A T T E R I E S
3
Excessive Cranking Time vs Temperature and Amps (representative
curve for ETX-Hundred Series)
ETX-Hundred Series - BMS
Only the ETX-Hundred Series battery models are recommended for use as the primary
aircraft battery (starter battery). In addition to the features found in the ETZ-Series and
ETX-Series motorsports batteries, critical electronic circuits are redundant, the over-charge
protection is enhanced, and fault indication is included. All components associated with the
main electronic battery disconnect are redundant. The built-in redundancy and fail-safe
design (default is to allow charge / discharge current flow to/from battery) ensures that no
single point failure results in the battery unintentionally disconnecting. The design aligns
with the requirements for an FAA approved lithium battery as per RTCA performance
specification DO-311a and DO-160. Our ETX900-VNT includes a thermal run-away
containment system making it fully compliant with DO-311a specification.
In the event of a charging system failure where the voltage increases to above 15.5V, the
resistance to charging current increases, and above 16V the charging current is completely
blocked. The time delay for this feature is 3 seconds to allow the aircraft alternator’s over
voltage protection (crowbar circuit) to activate first. This design offers charge voltage
protection greater than 40V. The discharge current (current out of battery) is unaffected in
this situation. EarthX requires having automatic over-voltage protection (crowbar) for
alternator type charging systems (not required for <20 Amp pad mount standby alternators).
The battery’s microcontroller monitors all failure modes, and reports failures with a built-in
LED indicator and discrete output. The discrete output for external fault monitoring is a

ETX- S E R I E S L I T H I U M B A T T E R I E S
4
single wire connection with a ¼” quick connect terminal. The output is a “current sinking”
type circuit (see diagram below) that can handle 100mA (connects the discrete output to
battery ground if a fault is present). This output can be connected to an external 12V LED
or general-purpose discrete input of an EFIS. The fault output has three states: fast flashing
(2 second on/ 2 second off), slow flashing (5 second on/ 5 second off) or solid.
Operating Instruction
Normal Operation
Under normal operating conditions the battery performs as any lead acid battery, storing
energy from the charging system and supplying it when the charging system is off.
Abnormal Operation
Under abnormal conditions that exceed the operating limits of the battery the battery may
stop supplying power. Two such important examples are over-discharge and over-
temperature. The over discharge protection shuts off outgoing power when the battery is
95% discharged (supplied 95% of its available energy). The over-temperature protection
shuts off outgoing power when cells and electronics get too hot as the result of excessive
cranking (i.e. cranking the engine for more than 15 seconds within a 1-minute period).
Monitoring
The slow flashing fault can indicate an improper state of charge or a problem with the cells
internal to the battery. If the battery voltage is outside the normal range of operation, 12.8V
to 14.6V, the battery is over-discharged or over-charged, most likely the result of an issue
with the electrical/charging system. If the battery voltage is within the normal operating
range, with a slow flashing fault, it is indicating an abnormal condition with a cell, such as
one cell’s state of charge is very different as compared to the other cells (high cell charge
level imbalance). The slow flashing fault may come on briefly during or following periods
of high current charging, and is not a concern. But if the fault persist, comes on
consistently during changing, or remains (charging or not), the battery will need to be
replaced.
The solid fault indicates a BMS hardware failure. For example, if the micro-controller fails
the fault indication output is activated (on solid). If the fault persist, comes on and stays on,
the battery will need to be replaced.
The fast flashing fault is an indication of high temperature; temperature exceeding the
normal operating or storage limits of the battery.
The table below shows the most common fault conditions and possible causes. Note: the
same table applies to our 24volt batteries, just double the voltage specified.

ETX- S E R I E S L I T H I U M B A T T E R I E S
5
LED Light
Voltage
Possible Cause
Recommended Action
Slow Flashing
(5s on/5s off)
Less than
12.8V
Battery over-discharged
(due to faulty charging
system)
Charge battery. Once charged, the
light will stop flashing.
Slow Flashing
(5s on/5s off)
(> 1 hour time
period)
13.2V-14.6V
Weak or failing cell
Discontinue use. If in flight, this is
not an immediate issue unless it is
in conjunction with a charging
system failure.
Slow Flashing
(5s on/5s off)
(< 30 min. time
period)
13.2V -14.6V
Cell to cell charge levels
are not balanced
May come on briefly during
periods of high current charging
until the cells are automatically
balanced. Try charging with a
plugin charger, like an Optimate
Lithium charger.
Slow Flashing
(5s on/5s off)
Greater than
15.2V
Over-charging (due to
faulty charging system)
If in flight, shutoff charging system
immediately. Aircraft over-voltage
protection is required if alternator
charging system is greater than 20
amps (i.e. over voltage crowbar
circuit)
Solid Light
Any voltage
BMS electronic issue
Discontinue use. If in flight, this is
not an immediate issue unless it is
in conjunction with a charging
system failure.
Solid Light that
turns off after
3 minutes
Any voltage
Short Circuit protection
was activated
Nothing needs to be done.
Short Flashing
(2s on/2s off)
Any voltage
High battery temperature
(> 75°C / 170°F)
Let battery cool down prior to
cranking or charging. If in flight,
this is not an immediate issue, but
if it continues on subsequent
flights, investigate and mitigate
high temperature at battery
location.
A sustained fault can indicate a serious issue with the battery or vehicle charging system that requires
immediate attention. Discontinue use until the issue is resolved and the battery no longer indicates
a fault. Continued use of a faulty battery can result in a cell rupture, the release of flammable vapors,
smoke and or a fire.
Limitations
Below are the installation specific limitation / requirements:

ETX- S E R I E S L I T H I U M B A T T E R I E S
6
•The maximum charge rating shown in the specification section (model specific) must be
adhered to.
•Automatic over-voltage protection is required on aircraft alternators with a maximum RPM
greater than 4500.
•Only modern vehicle charging systems like 3-phase alternators or permanent magnet
alternators are recommended as the charging source for this battery.
•For ETX-Hundred Series batteries, the battery fault monitoring circuit must be installed
and tested (see fault monitoring installation section of this manual).
The battery must be installed in such a manner and or location to limit radiant and convection
heating. The maximum short term environmental temperature of battery location should be less
than 85°C. The battery should not be placed near high temperature surfaces without the use of heat
shields.
Specifications
Model: ETZ5G
Voltage
13.2 V
Ah (lead-acid equivalent)
10
Ah (1 hour discharge rate)
3.4 (1C rate)
Pulse Crank Amps (PCA)
240A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
140A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Self-Discharge Rate
< 5%/month @ 25°C
Max Continuous Discharge Amps
30A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
.8 - 5A
Max Charge Amps
15A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
1.17 lb. (.53Kg)
Dimensions
3.54in x 1.96in x 3.54in
(90mmX50mmX90mm)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Model: ETZ14C
Voltage
13.2 V
Ah (lead-acid equivalent)
20
Ah (1 hour discharge rate)
6.8 (1C rate)

ETX- S E R I E S L I T H I U M B A T T E R I E S
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Pulse Crank Amps (PCA)
690A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
330A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Self-Discharge Rate
< 3%/month @ 25°C
Max Continuous Discharge Amps
60A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
.8 - 10A
Max Charge Amps
30A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
2.5 lb. (1.1Kg)
Dimensions
5.9in x 3.4in x 4.5in
(150mmX86mmX115mm)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Model: ETX12A
Voltage
13.2 V
Ah (Lead-acid equivalent)
12
Ah (1 hour discharge rate)
4 (1C rate)
Pulse Crank Amps (PCA)
220A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
135A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Self-Discharge Rate
< 5%/month @ 25°C
Max Continuous Discharge Amps
40A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
.8 - 5A
Max Charge Amps
20A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
1.3 lb. (.6Kg)
Dimensions
ETX12A 4.5in x 2.6in x 3.7in
(113mmX66mmX95mm)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)

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8
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Model: ETX18B, ETX18C, ETX18F (ETX18C discontinued as of 2-2019, use ETX18F
as replacement)
Voltage
13.2 V
Ah (Lead-acid equivalent)
18
Ah (1 hour discharge rate)
6.2 (1C rate)
Pulse Crank Amps (PCA)
340A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
230A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Self-Discharge Rate
< 3%/month @ 25°C
Max Continuous Discharge Amps
60A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
.8 - 8A
Max Charge Amps
30A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
2.2 lb.(1Kg)
Dimensions
ETX18B 5.3in x 2.6in x 4.1in
(135mmX66mmX105mm)
ETX18C 5.9in x 3.4in x 4.5in
(150mmX86mmX115mm)
ETX18F 5.9in x 3.4in x 3.6in
(150mmX86mmX93mm)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Model: ETX24C
Voltage
13.2 V
Ah (Lead-acid equivalent)
24
Ah (1 hour discharge rate)
7.8 (1C rate)
Pulse Crank Amps (PCA)
420A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
270A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Self-Discharge Rate
< 4%/month @ 25°C
Max Continuous Discharge Amps
80A
Standard Charge Voltage
13.9 - 14.6 V

ETX- S E R I E S L I T H I U M B A T T E R I E S
9
Recommended Charger/Maintainer
Amps
.8 - 10A
Max Charge Amps
40A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
2.6 lb. (1.2Kg)
Dimensions
ETX24C 5.9in x 3.4in x 4.5in
(150mmX86mmX115mm)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Model: ETX36C, D &E (ETX36E discontinued as of 2-2019, use ETX680 as
replacement)
Voltage
13.2 V
Ah (Lead-acid equivalent)
36
Ah (1 hour discharge rate)
12.4 (1C rate)
Pulse Crank Amps (PCA)
680A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
320A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Self-Discharge Rate
< 3%/month @ 25°C
Max Continuous Discharge Amps
100A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
.8 - 15A
Max Charge Amps
60A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
3.9 lb. (1.8Kg)
Dimensions
ETX36C 5.9in x 3.4in x 4.5in
(150mmX86mmX115mm)
ETX36D 6.9in x 3.4in x 6.1in (175mm
X86mm X155mm)
ETX36E 6.5in x 3.1in x 6.6in (166mm
X79mm X168mm)

ETX- S E R I E S L I T H I U M B A T T E R I E S
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Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Model: ETX48E (discontinued as of 3-1-2017-use ETX1200 as replacement)
Voltage
13.2 V
Ah (Lead-acid equivalent)
48
Ah (1 hour discharge rate)
24.8 (1C rate)
Pulse Crank Amps (PCA)
1200A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
600A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Max Continuous Discharge Amps
150A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
5 - 30A
Max Charge Amps
150A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
7.7 lb. (3.5Kg)
Dimensions
6.6in x 3.4in x 6.9in
(166mm X86mm X175mm)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Model: ETX104
Voltage
13.2 V
Capacity
4Ah @ 1C rate
Capacity vs Temperature
25 °C = 100%
0°C = 97%
-30°C = 95%
Self-Discharge Rate
< 5%/month @ 25°C
Max Continuous Discharge Amps
8A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
.8 - 5A
Max Charge Amps
15A (Internally limited to 15A by
battery electronics)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)

ETX- S E R I E S L I T H I U M B A T T E R I E S
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2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
1.3 lb. (.6Kg)
Dimensions
4.5in x 2.6in x 3.7in
(113mmX66mmX95mm)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Maximum Altitude
50,000 Ft
Model: ETX680/ETX680C
Voltage
13.2 V
Capacity
12.4Ah @ 1C rate (See below)
Capacity vs Temperature
25 °C = 100%
0°C = 97%
-30°C = 95%
Self-Discharge Rate
<3%/month @ 25°C
Pulse Crank Amps (PCA)
680A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
320A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Max Continuous Discharge Amps
100A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
5 - 15A
Max Charge Amps
60A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
4.1 lb. (1.9Kg)/3.9 lb. (1.8Kg)
Dimensions
ETX680 6.5in (L) x 3in (W) x 6.6in
(H)
166mm(L)x76mm(W)x168mm(H)
ETX680C 5.9in (L) x 3.4in (W) x 4.5in
(H)
150mm(L)x86mm(W)x115mm(H)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Maximum Altitude
50,000 Ft

ETX- S E R I E S L I T H I U M B A T T E R I E S
12
ETX680/680C Discharge Capacity
ETX680/680C Discharge Time
10.5
11.5
12.5
13.5
14.5
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Volts
Amp-hours (Ah)
6.2A (.5C)
12.4A (1C)
18.6A (1.5C)
10
11
12
13
14
15
010 20 30 40 50 60 70 80 90 100 110 120 130
Volts
Time (Minutes)
6.2A (.5C)
12.4A (1C)
18.6A (1.5C)

ETX- S E R I E S L I T H I U M B A T T E R I E S
13
Model: ETX900 / ETX900-VNT
Voltage
13.2 V
Capacity
15.6Ah @ 1C rate (See below)
Capacity vs Temperature
25 °C = 100%
0°C = 97%
-30°C = 95%
Self-Discharge Rate
<3%/month @ 25°C
Pulse Crank Amps (PCA)
840A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
400A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Max Continuous Discharge Amps
150A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
5 - 20A
Max Charge Amps
80A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight (ETX900) / (ETX900-VNT)
4.9 lb. (2.2Kg) / (VNT model is 5.4lb)
Dimensions
6.5in (L) x 3in (W) x 6.6in (H)
166mm(L)x76mm(W)x168mm(H)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Maximum Altitude
50,000 Ft

ETX- S E R I E S L I T H I U M B A T T E R I E S
14
ETX900 Discharge Capacity
ETX900 Discharge Time
Model: ETX1200 (Discontinued January 2023, replaced with ETX1200 (Gen 2)
Voltage
13.2 V
Nominal Voltage
12.8 V
Capacity
24.8Ah @ 1C rate (See below)
Capacity vs Temperature
25 °C = 100%
0°C = 97%
-30°C = 95%
Self-Discharge Rate
<2%/month @ 25°C
10
11
12
13
14
15
010 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160
Volts
Time (Minutes)
6.2A (.39C) 12.4A (.77C) 18.6A (1.16C)

ETX- S E R I E S L I T H I U M B A T T E R I E S
15
Pulse Crank Amps (PCA)
1200A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
600A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Max Continuous Discharge Amps
150A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
5 - 30A
Max Charge Amps
120A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
6.9 lb. (3.15Kg)
Dimensions
6.5in (L) x 3.1in (W) x 6.6in (H)
166mm(L)x79mm(W)x168mm(H)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Maximum Altitude
50,000 Ft
Model: ETX1200 (Gen 2)
Voltage
13.2 V
Nominal Voltage
12.8 V
Capacity
20Ah @ 1C rate (See below)
Capacity vs Temperature
25 °C = 100%
0°C = 97%
-30°C = 95%
Self-Discharge Rate
<2%/month @ 25°C
Pulse Crank Amps (PCA)
1200A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
600A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Max Continuous Discharge Amps
150A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
5 - 30A
Max Charge Amps
120A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
5.6 lb. (2.7Kg)
Dimensions
6.5in (L) x 3in (W) x 6.6in (H)
166mm(L)x76mm(W)x168mm(H)

ETX- S E R I E S L I T H I U M B A T T E R I E S
16
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Maximum Altitude
50,000 Ft
ETX1200 Discharge Capacity
ETX1200 Discharge Time

ETX- S E R I E S L I T H I U M B A T T E R I E S
17
Model: ETX1600
Voltage
13.2 V
Nominal Voltage
12.8 V
Capacity
32Ah @ 1C rate
Capacity vs Temperature
25 °C = 100%
0°C = 97%
-30°C = 95%
Self-Discharge Rate
<2%/month @ 25°C
Pulse Crank Amps (PCA)
1600A (3 sec @ 20 °C, voltage >7.2V)
Cold Crank Amps (CCA)
760A (modified SAE test, 3 sec@ 0°F,
voltage >7.2V)
Max Continuous Discharge Amps
200A
Standard Charge Voltage
13.9 - 14.6 V
Recommended Charger/Maintainer
Amps
5 - 30A
Max Charge Amps
160A (from vehicle charging system)
Life (Charge cycles)
4000 cycles @ 1C discharge rate, 25°C
(20% depth of discharge)
2000 cycles @10C discharge rate, 25°C
(80% depth of discharge)
Life (Years)
Up to 6 Years
Weight
8.9 lb. (4Kg)
Dimensions
6.5 in (L) x 5.1 in (W) x 6.6 in (H)
166mm(L) x 129mm (W) x 168mm (H)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Maximum Altitude
50,000 Ft
Model: ETX900-24
Voltage
26.4 V
Capacity
15.6Ah (See charts)
Capacity vs Temperature
25 °C = 100%
0°C = 97%
-30°C = 95%
Self-Discharge Rate
< 4% / month @ 25 °C
Pulse Crank Amps (PCA)
840A (3 sec @ 20 °C)
Cold Crank Amps (CCA)
400A (3 sec @ 0 °F)
Continuous Discharge Amps
150A
Standard Charge Voltage
27.6 –28.8V
Maximum Charge Voltage
29.2V

ETX- S E R I E S L I T H I U M B A T T E R I E S
18
Recommended Charger/Maintainer
Amps
5 - 20A
Max Charge Amps
80A (@28.8V from charging system); 150A
(@28V from charging system)
Life (Charge cycles, 80% depth of
discharge)
4000 cycles @ 1C
discharge rate, 25°C
2000 cycles @10C
discharge rate, 25°C
Life (Years)
Up to 6 Years
Weight
8.9lb. (4.0Kg)
Dimensions
6.5 in (L) x 5.1 in (W) x 6.6 in (H)
166mm(L) x 129mm (W) x 168mm (H)
Environmental Rating (resistance to
water intrusion)
IP 66 (wash down with a high-pressure
washer)
Operating Temperature
-30 °C to +60 °C
Storage Temperature
-40 °C to +70 °C
Maximum Altitude
50,000 Ft
ETX900-24 Discharge Time