Minute-level accuracy of the amount of charge time left in EF DELTA based on the current output level. Note
this is an approximate calculation and values may vary depending on the battery state of charge as the
Battery approaches either fully charged or fully discharged.
a. Remaining Charge Time
If the ring on EF DELTA’s display screen is flashing, please immediately discontinue using the Delta, switch it o
and contact our Product Experts at support@ecoflow.com.
b. Battery Failure Warning
Shows the remaining battery percentage. If your battery drops below 0%, the battery segment on the screen
will start to blink. When this happens, please immediately recharge your EF DELTA.
c. Battery Level Indicator
Indicates that EF DELTA’s battery temperature is too high. All input and output functions will stop and the
fan will start working. Please unplug the devices connected to the Deltas output ports, bring the EF DELTA
to a cooler location, definitely out of direct sun, and wait for the temperature to be within the working
range before restarting the EF DELTA. Once the internal battery cools down, EF DELTA will resume normal
operation.
Indicates that the battery temperature of EF DELTA is too low and the Delta is too cold to safely discharge
or recharge. All inputs and outputs will stop functioning at this state. Please bring the EF DELTA to a
warmer location and wait for the temperature to be within the working range before restarting the EF
DELTA.
The fan speed of the EF DELTA directly correlates with the load and the ambient temperature. The higher
the load or the ambient temperature, the higher the fan speed will be.
e. Fan Indicator
Shows EF DELTA’s current power input level in watts.
g. Current Input
Shows EF DELTA’s current power output level in watts.
h. Current Output
There are 2 levels of Overload Protection: Software Level: when the power pulled from the AC outlets
steadily exceeds the maximum AC power output, the overload indicator and AC indicator will flash
simultaneously for 15 seconds and the AC output will automatically and immediately be turned o. Other
ports will continue to work; Battery Level: when the power pulled from the AC outlets exceeds the
maximum AC power output, the overload indicator and AC indicator will flash simultaneously for 15
seconds and EF DELTA will automatically and immediately be turned o. Overload warning - There are two
types of overload protection. First level of protection: When any of the DC sockets exceeds the maximum
current limit or the output of any AC sockets exceeds the maximum AC power output (Overload of 1-10%
for 10min; overload of 11-20% for 1min; overload of 21-50% for 10s; overload of 51-100% for 100ms), and the
DC power output exceeds the maximum current, the overload indicator and the indicator of the
corresponding socket will flash at the same time for 15s. Power supply to the socket will be cut o, while
other sockets will continue to work. Second level of protection: When the power output from any DC or AC
i. Overload Warning
f. High Temperature Indicator
d. Low Temperature Indicator
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