E T X T S O L I T H I U M B A T T E R I E S
16
Part Number Revision
Part Number
Revision
Configuration (Release Date)
EXT900-TSO*
BMS Part # Rev: BMS_DR**
A
0 (Initial)
BMS_DR Rev G 4/22/2019
BMS_DR Rev H 7/5/2019
* Design Assurance Level, C (major)
** Airborne Electronic Hardware
Warranty
EarthX, Inc. (Manufacturer) warrants its ETX lithium batteries (hereafter referred to as
Battery or Batteries) to be free of defects in material and workmanship for a period of two
years. A dealer is not authorized to issue a replacement battery without prior authorization
from EarthX, Inc.
The applicable Warranty period begins from the date of purchase with original receipt, or, if
no receipt is available, from the manufacturing date on the battery. The warranty is non-
transferable and for the original purchaser. Batteries determined to meet the conditions of
this warranty will be replaced free of charge one time. For warranty replacement
consideration, fill out the online warranty submission form located on the EarthX
website. EarthX’ s acceptance of any items shipped to EarthX for warranty replacement
shall not be deemed an admission that the item(s) are defective. For international warranty
returns, customer will pay the shipping expenses. Batteries replaced under the warranty
provisions will carry only the remainder of the original applicable Warranty period.
Troubleshooting
The table below is a summary of the battery’s three fault modes of operation; solid, slow
cycling or fast cycling and possible causes:
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 (alternator) not
charging the battery.
C
harge the battery. Verify
aircraft charging system is
functioning.
Slow Flashing
(5s on/5s off)
(> 1 hour time
period)
12.8-14.6V
Weak or failing cell
Charge the battery with an
approved charger and observe
fault LED. If LED persists, charge
the battery a second time with
approved charger. If the LED fault
persists, the battery should be
