Hi all, I have my batteries set to auto discharge after 7 days. I know you should always charge your batteries the night before you fly, so my question is, what if I charge the batteries because I think I might want to fly the next day, but don't end up actually flying until a few days later. The batteries are showing 4 green lights, but I know I should not trust those if it has been sitting a few days. My question is, is there a way to recharge it to 100% when it is still showing 4 lights or do I have to turn my drone on and leave it on until it only shows 3 bars then recharge fully?

Just simply plug the batteries into the charger it should automatically top them up

Hi there, thanks for reaching DJI Forum. If you're not sure if the battery is still in 100% level after you charge it in a few days, I suggest you try to turn on your aircraft with the battery and test it by removing the propellers until the battery level goes down and recharge it. If you have further question, please let us know. Thanks.

Hellsgate Posted at 2018-8-23 14:38
Just simply plug the batteries into the charger it should automatically top them up

When I try that, the green lights stay off, so I assume that it is not charging it.

fansb1fe1104 Posted at 2018-8-23 15:51
When I try that, the green lights stay off, so I assume that it is not charging it.

Then it must still be fully charged.

Plug your battery into the drone turn on and check battery state of charge if 100% or very close you should be good to go if in doubt then discharge them a bit in the drone then recharge again.

DJI Natalia Posted at 2018-8-23 15:05
Hi there, thanks for reaching DJI Forum. If you're not sure if the battery is still in 100% level after you charge it in a few days, I suggest you try to turn on your aircraft with the battery and test it by removing the propellers until the battery level goes down and recharge it. If you have further question, please let us know. Thanks.

   Be careful when running the motors too long with no props, removing the props also removes the air cooling of the motors...

Vetinari Posted at 2018-8-24 08:23
Be careful when running the motors too long with no props, removing the props also removes the air cooling of the motors...

Hi, thanks for your information. We appreciate it.

Guys ... I believe the P4 battery has the same 'trick' to top it up as the P3 series .....

Switch the battery ON and then plug in the charger. This over-rides the boards detection of high state of charge but still allows it to shut off at 100%.

DJI P series batterys have a default block on top up if charge level is from about 93% or higher ... and the OFFICIAL DJI way to over-ride is to switch on battery and charge.

In fact I switch on my batterys for EVERY charge even from low level ... and I find I do get a slight improvement in charge ... without - I often see 98 - 99% when plugged in to AC ... when charged with battery switched on ... I see 99 - 100% when plugged into AC.

Nigel

Hellsgate Posted at 2018-8-23 15:56
Plug your battery into the drone turn on and check battery state of charge if 100% or very close you should be good to go if in doubt then discharge them a bit in the drone then recharge again.

See my post no. 9

No need for running any motors / draining down ... it is actually very simple to top up a DJI battery.

Nigel

If you need to top up an intelligent flight pack that may have begun auto discharge, just turn it on before you plug it into the charger.


RedHotPoker

RedHotPoker Posted at 2018-8-24 09:51
If you need to top up an intelligent flight pack that may have begun auto discharge, just turn it on before you plug it into the charger.

Thank you RHP .... thought I was all alone out there on that !!

Nigel

solentlife Posted at 2018-8-24 09:25
Guys ... I believe the P4 battery has the same 'trick' to top it up as the P3 series .....

Switch the battery ON and then plug in the charger. This over-rides the boards detection of high state of charge but still allows it to shut off at 100%.

Thank you very much that is much better than turn it on and let it run.

I seriously “topped up” my four flight packs last night.

Yeah, they were already depleted down to a 20% voltage... ;-)

Almost a Deep Cycle. Hahaha

RedHotPoker

Vetinari Posted at 2018-8-24 08:23
Be careful when running the motors too long with no props, removing the props also removes the air cooling of the motors...

If you want to run the motors without props, or even while you play with the onboard Flight SIM,
place the drone on top an upturned fan, or in front of the air conditioner.


RedHotPoker

RedHotPoker Posted at 2018-8-24 09:51
If you need to top up an intelligent flight pack that may have begun auto discharge, just turn it on before you plug it into the charger.

Or after you plug it into the charger - don't think it makes any difference!

Nigel_ Posted at 2018-8-24 11:50
Or after you plug it into the charger - don't think it makes any difference!

I only do it in the reverse order.

Battery on first, then plug into one of my chargers.

Ah. but that would be a very rare occasion anyways.


RedHotPoker

solentlife Posted at 2018-8-24 09:27
See my post no. 9

No need for running any motors / draining down ... it is actually very simple to top up a DJI battery.

Cool didnt know that thanks

RedHotPoker Posted at 2018-8-24 11:22
I seriously “topped up” my four flight packs last night.

Yeah, they were already depleted down to a 20% voltage... ;-)

I keep having to top mine up mine because I want to fly, but this heat is too much in the summer. In the past 2 months Ive been able to fly 2 or 3 times if I got up really early on a weekend. This depresses me.

fansb1fe1104 Posted at 2018-8-24 13:52
I keep having to top mine up mine because I want to fly, but this heat is too much in the summer. In the past 2 months Ive been able to fly 2 or 3 times if I got up really early on a weekend. This depresses me.

Yes, since it’s a hobby, and one we love, our time has to be shared with our other pastimes and loves.

But you do need to spend some time appropriate to your passion for the sport.


Plus, the more you fly, the frequency will multiply. Ha

Wear light colours and loose fitting... and a large sombrero, mucho gracias señor!!

RedHotPoker

RedHotPoker Posted at 2018-8-24 14:23
Yes, since it’s a hobby, and one we love, our time has to be shared with our other pastimes and loves.

But you do need to spend some time appropriate to your passion for the sport.

I need to fly 2 at once and have 1 just hover over me acting as a fan.

fansb1fe1104 Posted at 2018-8-24 14:52
I need to fly 2 at once and have 1 just hover over me acting as a fan.

Yes, There are numerous hats designed with a solar powered fan...











RedHotPoker

RedHotPoker Posted at 2018-8-24 15:21
Yes, There are numerous hats designed with a solar powered fan...

[view_image]

I think if I was out in public with the hat in the 1st picture they would probably hall me off to the loony bin.

fansb1fe1104 Posted at 2018-8-24 15:36
I think if I was out in public with the hat in the 1st picture they would probably hall me off to the loony bin.

Yes, but not if worn in Dubai, where poor millionaires frolic in the sand and sun... ha
There are other styles...










RedHotPoker

RedHotPoker Posted at 2018-8-24 15:37
Yes, but not if worn in Dubai, where poor millionaires frolic in the sand and sun... ha
There are other styles...[view_image]

That last hat is creepy. For some reason reminds me of a hammerhead shark.

fansb1fe1104 Posted at 2018-8-24 21:10
That last hat is creepy. For some reason reminds me of a hammerhead shark.

You just had to go there...



RedHotPoker

My main Office is in Dubai and satellites in Jebel Ali / Fujaira ..... people just go from Aircon to Aircon ...

Nigel

fansb1fe1104 Posted at 2018-8-24 13:52
I keep having to top mine up mine because I want to fly, but this heat is too much in the summer. In the past 2 months Ive been able to fly 2 or 3 times if I got up really early on a weekend. This depresses me.

Better to not keep topping up unless you really expect to fly.

Let them discharge down to storage ... betterv to use an hour charging back up when you are going to use them - than keep them topped up and then end up buying new batterys !!

Nigel

solentlife Posted at 2018-8-25 03:09
Better to not keep topping up unless you really expect to fly.

Let them discharge down to storage ... betterv to use an hour charging back up when you are going to use them - than keep them topped up and then end up buying new batterys !!

Good point, thank you.

RedHotPoker Posted at 2018-8-24 23:13
You just had to go there...
[view_image]

But will this keep me cool?

fansb1fe1104 Posted at 2018-8-25 17:02
But will this keep me cool?

Yes, its got places to store ice packs, keeping you fresh and Odor free. Ha


RedHotPoker