Welcome Inspire Pilots!
Join our free DJI Inspire community today!
Sign up

Discharging Batteries

Joined
Apr 5, 2015
Messages
119
Reaction score
72
Age
50
I have a question about a possible way to quickly discharge my Inspire 1 batteries. I have a 400 watt programmable DC Load. I'm wondering if I want to discharge these batteries, what wattage or current would be safe to use.

Also, I know when you turn on your Inspire 1 and just leave it the AC will shut itself down when it gets down too low. Does anyone know if this is the battery shutting things down at a low voltage point or the AC?

I'm just wondering if I can put a specific current setting into the DC Load and walk away and the battery turn itself off when it's totally discharged, or should I make an external circuit that shuts off the DC Load when the battery get's to a specific voltage?
 
Joined
Feb 3, 2015
Messages
1,882
Reaction score
733
The battery will turn itself off. I discharge with 4A as that's the max my charger will do with 6s (80W).

Sent from my SM-G920F using Tapatalk
 
  • Like
Reactions: JimPA
Joined
Feb 20, 2015
Messages
203
Reaction score
35
Age
69
Excuse the ignorance, but what do you mean 4A? I have no idea what that means, but I'm interested in discharging my batteries from time to time.
 
Joined
Apr 5, 2015
Messages
119
Reaction score
72
Age
50
A Programmable DC Load is a device that you would use to create a load on a circuit. It's used mostly by people that make things like power supplies. I just happen to have one and it can be set to create a specific load on a battery so I can use this to drain my batteries w/o having to put them in the Inspire.

Not saying that people should run out and get one of these, as they are not a cheap date, but if you have one on your bench already why not use it. :)

http://www.circuitspecialists.com/dc-load-400-watt-array-3721a.html
 
Joined
Feb 3, 2015
Messages
1,882
Reaction score
733
Is this a device for discharging batteries?
In my case I just use my iCharger 3010B charger and set it to 4A discharge current, 6s lipo and 3.1V/cell termination. It will thus slow down discharge current when it reaches 6*3.1V, and as that's apparently also the set point for the I1's battery low cell voltage protection eventually the lowest cell will reach that and the battery will turn itself off, but discharge will be at low current by then.
 
Joined
Jan 30, 2015
Messages
1,144
Reaction score
657
Location
South Florida, USA
Jim and Kilrah, thank you for the information.

Yes, nearly $700 to discharge batteries is a tad steep for me. :confused: Attempting to use complicated pieces of equipment like that are well above my pay grade.
 
  • Like
Reactions: John Archer
Joined
Dec 23, 2015
Messages
18
Reaction score
6
Age
68
could you put light bulb on to discharge batteries with wires attached to battery connection ??
 
Joined
Mar 20, 2014
Messages
3,460
Reaction score
1,675
Location
Boston, MA
I use this. FW in Beta now for Storage Mode. It's so nice to be able to drop in DJI batteries and set them for Storage Mode regardless of current charge.

ImageUploadedByTapatalk1457993403.178852.jpg
 
  • Like
Reactions: John Archer
Joined
Apr 30, 2014
Messages
97
Reaction score
17
damoncooper what is that discharge watts for storage mode?

I'm currently using a CBA IV and discharging at 5.75amps x10 for breaking in my new inspire batteries. (time consuming but I don't mind) better fail at the bench than in the air.

Note: discharging with 5.75amps to 23.65 volts x 10 cycles.

Nas,
 
Joined
Jan 9, 2016
Messages
127
Reaction score
39
Age
63
Location
UK
I use this. FW in Beta now for Storage Mode. It's so nice to be able to drop in DJI batteries and set them for Storage Mode regardless of current charge.

View attachment 7273
I have one of these too, but am unaware of the ability to set it to storage mode.

Would you be able to let me know where I can find out more about this facility please?

Thanks in advance
 
  • Like
Reactions: John Archer
Joined
Oct 20, 2015
Messages
180
Reaction score
32
Age
73
I got the message, that I should discharge the battery to 5% and then recharge to 50% if I am storing it. Discharged on the Inspire (waiting for Inspire Angel) down to nothing, recharged so that the 3rd light was flashing.
Recharged before flight, but got the same warning message. Battery was at 100% and cells were at 4.32. Could the message to discharge/recharge be some type of glitch?
 

New Threads

Members online

Forum statistics

Threads
19,733
Messages
192,911
Members
29,102
Latest member
bseidersphotog