how to avoid forced landing because of low battery

[mj2019]

hi every one , among annoying features that are even more risky than safe is the low battery forced landing, am used to modify it through parameters but this modification is a story of its own rarely are the parameters explained and how modifying them will out put, to get to the topic i hope some one shares how to if possible prevent forced landing due to critical low battery on the air3 , mentioning please what parameters to modify to what values and why if possible

 

[msinger]

i hope some one shares how to if possible prevent forced landing due to low battery

Why not take a more responsible approach and land before the battery reaches a critically low level?

Flying until your drone drops out of the sky is far riskier than a controlled landing, which at least ensures it reaches the ground safely.

 

[mj2019]

I mentioned that forced landing is more of a risk in some cases since some pilots dont understand that even though forced landing once kicked in cannot be canceled but still increasing throttle will still get the drone up and it may still fly, but i once saw a friend who happened to have reached critical battery forced landing and he just left the sticks and his drone landed on the high way!!!! yes the warnings are necessary but leaving the pilot to control the drone to the last juice in the battery is more safe than saving the battery!!!!

 

[mj2019]

i recall that in parameters of air 3 i saw a parameter :
g_config.voltage2.user_set_smart _bat
with default value =2 but can be set to zero or 1 what does this parameter stand for and what does those values stand for , if some one may help please

 

[msinger]

leaving the pilot to control the drone to the last juice in the battery is more safe than saving the battery

That sounds even more dangerous, especially considering your example of a pilot who isn't fully familiar with operating the drone. Perhaps additional training could help prevent such a forced landing scenario from occurring in the first place.

 

[Kilrah]

leaving the pilot to control the drone to the last juice in the battery is more safe than saving the battery!!!!

It's not saving the battery, it's saving the battery and aircraft, cause when the battery is empty for real it shuts off and the aircraft drops like a rock.
There is no reason you should ever still be in the air to even reach the forced landing level.

 

[mj2019]

It's not saving the battery, it's saving the battery and aircraft, cause when the battery is empty for real it shuts off and the aircraft drops like a rock.
There is no reason you should ever still be in the air to even reach the forced landing level.

am not reckless and irresponsible to fly to that level , i plan my flights to always return with 30% bat, but in some cases conditions like wind etc may let u reach the critical level of 10% and the drone goes to force land in water , high way.... and added to that drones like the dji fpv or avata or others the forced landing will happen with suppose speed of 2 or 3 m/s but suppose ur at altitude u can manage to go back faster without the forced landing..

 

[Meta4]

in some cases conditions like wind etc may let u reach the critical level of 10% and the drone goes to force land in water , high way.... and added to that drones like the dji fpv or avata or others the forced landing will happen with suppose speed of 2 or 3 m/s but suppose ur at altitude u can manage to go back faster without the forced landing..

The situations you describe are all things that the drone flyer needs to be conscious of and fly accordingly.

 

[ryguy80]

Please land the drone before the battery level hits zero. We don't need an excuse for more legislation because some innocent bystander took a drone hit to the head from it dropping like a rock out of the sky.

 

[Cafguy]

but leaving the pilot to control the drone to the last juice in the battery is more safe than saving the battery!!!!

You can turn a Lipo into a ball of flames trying to squeeze the last bit of power out of it!!-- not to mention discharging your LiPo batteries below the 12 percent mark DESTROYS your lipos and below a certian level a lipo charger will no longer "see" the battery to re-charge it..
If you wanna risk turning your drone into a roman candle and be the DJI Battery salespersons Favorite customer....Go for it I suppose. Just kidding be happy with the time you get.....Many of my Drones drain a battery in about 5 min or less!

 

[GadgetGuy]

You can turn a Lipo into a ball of flames trying to squeeze the last bit of power out of it!!-- not to mention discharging your LiPo batteries below the 12 percent mark DESTROYS your lipos and below a certian level a lipo charger will no longer "see" the battery to re-charge it..
If you wanna risk turning your drone into a roman candle and be the DJI Battery salespersons Favorite customer....Go for it I suppose. Just kidding be happy with the time you get.....Many of my Drones drain a battery in about 5 min or less!

Simply alarmist and untrue. DJI batteries at 0% remaining battery are still at above 3.5V per cell and are capable flying for two more minutes thereafter before dropping below 3.0V per cell, where things start to get really dicey. Not recommended, but far more accurate than your statements.

 

[GadgetGuy]

It's not saving the battery, it's saving the battery and aircraft, cause when the battery is empty for real it shuts off and the aircraft drops like a rock.
There is no reason you should ever still be in the air to even reach the forced landing level.

Depending upon the circumstances, the forced landing may also be destroying the aircraft, especially when over water or over an irrecoverable area. The OP is merely advocating for the ability to choose to potentially sacrifice battery health to be to recover the drone in such a situation.

His solution in such an emergency is to gain altitude long before the forced landing, to still be able to bring the aircraft home on a descending glide path, as reduced forward and lateral speed control still exists under a forced landing, the descent rate of which can also be slowed with full up left stick.

Understanding exactly what happens under forced landing is critical should one ever find oneself in such a situation, for whatever reason. GEO used to be the main cause of such situations. However, with the removal of GEO, the likelihood is now vastly reduced.

 

[GadgetGuy]

i recall that in parameters of air 3 i saw a parameter :
g_config.voltage2.user_set_smart _bat
with default value =2 but can be set to zero or 1 what does this parameter stand for and what does those values stand for , if some one may help please

From what I recall, I believe that 0 disables it. If you research old threads on parameter mods for earlier DJI aircraft, you'll find your answer, assuming that the appropriate parameter still works as before. A lot of them can still be changed but are automatically reset to the original values upon boot up.

 

[mj2019]

am not recommending flying to less than 10% battery or not even to less than 20 , but in real world thing really happen. i recalll from the phantom days where i was capturing a celebration and the fire works started when i was 15% with the critical bat land kicking in and no one cares for my battery level, u just lose the scene they aint gona repeat it , ever since then i try to get rid of the critical landing if i can, i repeat in case i need the last minute or a bit more

 

[mj2019]

From what I recall, I believe that 0 disables it. If you research old threads on parameter mods for earlier DJI aircraft, you'll find your answer, assuming that the appropriate parameter still works as before. A lot of them can still be changed but are automatically reset to the original values upon boot up.

i hope for an exact answer parameters are no place to guess, ill test fly it with this thing set to 0 but still insist on an answer for all implications the parameter may cause exactly on the air3

 

[mj2019]

by the way there are some other parameters its the :

raw_bat_level1|g_config.voltage.level_1_protect

raw_bat_level2|g_config.voltage.level_2_protect

emergency_voltage


its very helpful if they are explained too values of them mean what?

 

[Phantomrain.org]

There is a little bit of a skill that needs to be required as to how to handle a force landing,
We have found in order to get ever ounce of battery to work for the drone you have to fly your drone back home with
the stick in the upward position the entire way back, This takes some getting use to..

Phantomrain.org
Gear to fly your drone in the Rain, Capture the Storm and use every ounce of battery power.

 

[DISC]

Depending upon the circumstances, the forced landing may also be destroying the aircraft, especially when over water or over an irrecoverable area. The OP is merely advocating for the ability to choose to potentially sacrifice battery health to be to recover the drone in such a situation.

His solution in such an emergency is to gain altitude long before the forced landing, to still be able to bring the aircraft home on a descending glide path, as reduced forward and lateral speed control still exists under a forced landing, the descent rate of which can also be slowed with full up left stick.

Understanding exactly what happens under forced landing is critical should one ever find oneself in such a situation, for whatever reason. GEO used to be the main cause of such situations. However, with the removal of GEO, the likelihood is now vastly reduced.

Don't think these things glide very far once the props stop turning! Doesn't help they're missing any sort of aeronautical lift generating surfaces.....

 

[tstr14]

DJI keeps trying to make flying these drones fool proof, but we keep inventing better(?) fools.

It ain't rocket science. Watch the battery level!

 

[GadgetGuy]

Don't think these things glide very far once the props stop turning! Doesn't help they're missing any sort of aeronautical lift generating surfaces.....

The recommended glide path back with sufficient elevation under forced landing has nothing to do with a motor shutoff from battery failure! Battery failure only takes place some two minutes after 0% Battery Remaining is displayed (which is still greater than 3.5V per cell), and only after the cells drop below 3.0 V. Prior to that, the aircraft can still sustain flight.