Expion360 EX-10ASC User manual

MPPT SOLAR CHARGE CONTROLLER
USER MANUAL
EX-10ASC

Expion360 10A MPPT Solar Charge Controller Manual
Rev 1
7/11/2023
DISCLAIMER
While every precaution has been taken to ensure the accuracy of the contents of this guide, Expion360 assumes no
responsibility for errors or omissions. Note as well that specifications and product functionalities may change without
notice.
IMPORTANT
Please be sure to read the manual in its entirety before using the products. Misuse may result in damaging the
products, causing harm, or incurring serious injury. This manual will update periodically without notice. Instead of
saving this manual, view it on the Expion360 website for future updates and reference.
https://expion360.com/pages/customer-support
ABOUT US
•Safety
Expion360 lithium batteries use lithium iron phosphate (LiFePO4/LFP) chemistry, which is the best choice for RV, marine,
and off-grid power storage applications, because of its high degree of safety and long cycle life.
•Quality
With all the Li-ion manufacturers in the market, Expion360 strives to ensure that our products meet the highest quality
standards to maintain our advantage over the competition. Expion360 battery uses cylindrical 26650, stainless steel
encased LiFePO4 cells. The cells are UL 1642 recognized (File No. MH64383). They are certified to the highest standard
in safety and performance. Instead of soldering, all internal connections are mechanically fastened to reduce resistance
and ensure long-term durability.
The Expion360 proprietary case contains internal structural support to protect the battery pack and BMS inside from the
effects of vibration and movement. The innovative oversized terminals and bus bars provide substantial electrical
connections to accommodate high ampacity cables.
•Service
The Expion360 technical support department has industry experts on standby to assist you, our valued customers, in
every way we can. If for any reason you require assistance with our products, contact us by phone or email any weekday
during business hours and receive help from the best technical support in the industry.
[email protected]
[phone]
Monday to Friday except for holidays
8 am - 4 pm PST

Expion360 10A MPPT Solar Charge Controller Manual
Rev 1
7/11/2023
1. Safety Information
Read all instructions in this manual before installation!
•The controller will be damaged if the solar input is above 10 A.
•DO NOT disassemble or attempt to repair the controller.
•Always disconnect the solar module before disconnecting the battery.
•Power connections must remain tight to avoid excessive heating from a loose connection.
•Charge only LiFePO4 batteries with this charge controller.
•Battery connection may be wired to one battery or a bank of batteries.
•Risk of electric shock. Please use caution.
2. Overview
The MPPT charge controller uses an advanced algorithm to optimize solar power conversion to electricity as
efficiently as possible. The charge controller has the following benefits:
•Quality internal components for a long lifespan.
•Wide window of operating temperatures.
•Lithium battery compatible and preset for Expion360 batteries.
•Maximum conversion efficiency of 98%.
•PV power limitation function.
•Aluminum housing with heat sink for cooling.
•IP67 rated.
3. Product features
1
Solar PV LED (Green) (off or on)
2
Battery LED (Green, Orange, or Red)
3
Solar PV SAE input connection
4
Battery SAE output connection

Expion360 10A MPPT Solar Charge Controller Manual
Rev 1
7/11/2023
4. Wiring
Please note that extra care must be given to the polarity of cables when using SAE connectors. Most SAE
connectors will have the red positive wire terminated at a shrouded female terminal. When a cable assembly
with this orientation of connector and cable connects with the SAE connectors of the solar charger, the red wire
becomes negative, and the black wire becomes positive. This is a potential source of confusion when wiring
and may cause damage to the unit. To reduce confusion, please use the accessory cable (available on the
website) to extend your SAE connections and remember to always consider polarity when making connections
to your battery and your solar panel(s).
Connection Order
1) Connect the battery to the solar charge controller. After connecting the battery, verify the battery LED is
green. If it is not green, refer to the troubleshooting section.
2) Connect the solar panel.
Pay close attention to the polarity of the wires.
Disconnect Order
1) Disconnect the solar panel.
2) Disconnect the battery.
5. LED Indicators
Indicator Color LED Indication Status
PV
LED
Green
On, Solid
PV connection normal but low voltage from PV.
No charging.
Green
OFF
No PV voltage at the input. No charging.
Green
Slowly Flashing (1x per second)
Charging.
Green
Fast Flashing (4x per second)
PV over voltage. No charging.
BATT
LED
Green
On, Solid
Normal.
Green
Slowly Flashing (1x per second)
Full.
Green
Fast Flashing (4x per second)
Over-voltage.
Orange
On, Solid
Under-voltage.
Red
On, Solid
Over-voltage.
Red
Fast Flashing (4x per second)
Overheating or low temperature.
If PV LED is green and the battery LED is orange:
System voltage error.

Expion360 10A MPPT Solar Charge Controller Manual
Rev 1
7/11/2023
6. Protection
Warning! The controller will be damaged if the solar input is above 10 A!
PV Over Current – The controller will limit battery charging current to 10 A. Adding additional extra solar panels
will not increase the charging speed of the solar charge controller and can damage the charge controller.
Battery Over Voltage – When the battery voltage reaches the set point of 14.4 Vdc, the controller will stop
charging the battery.
PV Short Circuit – The controller will stop charging if the solar panel connection is in a short circuit condition.
Clear the short to resume normal operation.
PV Reverse Polarity – Solar can be connected in reverse polarity without damaging the charge controller only
when:
•The battery is not connected.
•The battery is properly connected, and the open circuit voltage of the PV is lower than 85 V.
Reverse Battery Polarity – When the PV is not connected or the PV connection is reversed, the charge controller
is fully protected against reverse battery polarity connection.
Warning! The controller will be damaged if the solar connection is correct, and the battery polarity
is reversed!
7. Technical Specifications
Device EX-10ASC
Nominal system voltage
12.8 Vdc
Rated charge current
10 A
Rated charge power
130 W (12.8 Vdc)
Max PV open circuit voltage
60 V
Maximum power point voltage range
Battery voltage + 2 V to 36 Vdc
Boost charging voltage
14.5 Vdc
Self-consumption
<13 mA
Working environment
-40 °F to 140 °F
Enclosure rating
IP67
Overall dimension
124 mm x 89 mm x 30 mm
Mounting hole size
3.5 mm
Mounting dimension
88 mm x 76 mm
Wire gauge
14 AWG
Connector
SAE
Weight
1.2 lb

Expion360 10A MPPT Solar Charge Controller Manual
Rev 1
7/11/2023
8. Troubleshooting
Fault Possible Cause Solution
The solar PV LED is off despite the
PV modules receiving sun exposure.
Solar PV is disconnected.
Check all wiring and connections.
No battery LED indicator.
Battery voltage may be less
than 8.5 Vdc or disconnected.
Use a multimeter to check the
battery voltage and check all
connections.
The battery LED is blinking fast
(green).
Battery over voltage.
Using a multimeter, measure the
battery voltage and confirm it is
less than 14.6 Vdc.
9. Warranty
This warranty does not apply under the following conditions:
•The product has incurred damage from improper use in an unsuitable environment.
•Visible dent marks or signs of abuse.
•Connected PV current, voltage, or power exceeding the rated value of the controller.
•The charge controller is used outside the working temperature window.
•Any attempt to disassemble the product by the user.