Get remaining battery charge of drone

ANAFI USA / ANAFI Thermal / ANAFI 4K
1

I’m trying to write a program to get the percent of battery remaining on my drone (real drone not simulator). The battery.health event message seems to do what I want but everytime I call getState the output is always OrderedDict([('state_of_health', 100)]) even when I leave drone running and the battery level obviously should not be 100%. Is this the correct way to get the amount of battery charge left on the drone?

import math
import olympe
import time
from olympe.messages.battery import health, voltage, alert


drone = olympe.Drone("192.168.42.1", loglevel=1)
drone.connection()


# display current battery life every 5 seconds, however this always returns 
# 100% even when I leave drone running.
while True:
	print("Battery health before takeoff :", drone.get_state(health))
	time.sleep(5)

drone.disconnection()
1 Like
2

clashing languages and frameworks here but I think what you really want is the battery level, not its health.

/**
 * Retrieves the device's current battery charge level, as an integer percentage of full charge.
 *
 * @return current battery charge level
 */
@IntRange(from = 0, to = 100)
int getBatteryLevel();

/**
 * Tells whether the device is currently charging.
 *
 * @return {@code true} if the device is charging, {@code false} otherwise
 */
boolean isCharging();

/**
 * Retrieves the device's current battery state of health, as an integer percentage of full health.
 * <p>
 * Battery health may be unsupported depending on the drone model and/or firmware versions. <br>
 * Hence, clients of this API should call {@link OptionalInt#isAvailable() isAvailable} method on the returned
 * value to check whether it can be considered valid before use.
 *
 * @return current battery state of health
 *
 * @see OptionalInt
 */
@NonNull
OptionalInt getBatteryHealth();
2 Likes
3

Thanks for reply. You are giving example from groundsdk? For Olympe I see 3 message types
-voltage
-health
-alerts

I don’t see the getBatteryLevel message anyway to do this in Olympe?

If not I can live with low battery alert but I would prefer to get exact battery remaining…

4

Have you tried voltage?

5

Hi,

The battery percentage is available through the common.CommonState.BatteryStateChanged message.

import math
import olympe
import time
from olympe.messages.common.CommonState import BatteryStateChanged


drone = olympe.Drone("192.168.42.1", loglevel=1)
drone.connection()
# display current battery life every 5 seconds
while True:
	print("Battery percentage before takeoff :", drone.get_state(BatteryStateChanged)["percent"])
	time.sleep(5)

drone.disconnection()
2 Likes