What happens if use Li-Po battery at max c-rating???

Hi there, 

 I was wondering what would happen if we operate the Li-Po battery at max c-rating?

I was operating a quad-plane VTOL in RTL mode and realized there was scenario that the drone was operating almost at the peak c-rating of the Li-Po battery (i.e. current draw about 100A) and then plunge down to 0 A. Is this a consequence of operating at max c-rating? if not, do you guys know what's the effect of it?Current%20Draw-Time%20Curve.jpg

Current Draw-Time Curve.jpg

You need to be a member of diydrones to add comments!

Join diydrones

Email me when people reply –


  • it may short its life cycle 

  • you kill your battery life time, and you make a risque to burn all and say goodbye at your drone! (What do you expect?)

  • Diven is correct, but more important is the following,

    As amperage increases under load the voltage drops.  Called voltage lag.  This drop in voltage increases as your actual amperage approaches the C rating for your battery.  When the voltage lag causes the "battery voltage under load" to drop below your fail safe battery voltage, hopefully, your craft will land or return to launch.  When you land and you have no load, the voltage lag will go away and the voltage will show much higher than when the load was applied.

    If you maintain the current draw to around 50% of the battery's C rating your voltage lag should be minimal.  

    Also important, If you use your battery near its max current it will likely get good and hot and that will cause early failure.  If your not so lucky it may catch on fire.

  • If you use Lipo battery at max c-rating, the battery's power will lose fast. From this Lipo battery guide, we can know what's the mean of the parameter on the Lipo battery.

    If you have a 1000mAh 100C lipo battery, you use this battery at 1C,  you can use about 1 hour,

    if you use this battery at 100C, you  can only use about 6 seconds.

    What is a Lipo Battery? - Lipo Battery Comprehensive Guide
    Lipo Battery, full name is lithium polymer battery, a rechargeable battery of lithium-ion technology, provide a higher specific energy than other lit…
This reply was deleted.


DIY Drones via Twitter
First impressions of Tinkergen MARK robocar https://ift.tt/36IeZHc
Nov 16
DIY Drones via Twitter
First impressions of the Intel OpenBot https://ift.tt/36qkVV4
Nov 10
DIY Drones via Twitter
Getting started with Robocars https://ift.tt/2HWsudU
Nov 1
DIY Drones via Twitter
RT @chr1sa: The US government just approved 5 US-made drones for purchase, all based on the @Dronecode @PX4Autopilot standard. Great news f…
Aug 20
DIY Drones via Twitter
RT @MarvelmindMaxim: Extreme precision for 60 swarming robots. #marvelmind #autonomousrobotics #robotics #swarmrobotics #rtls #ips #indoor…
Aug 3
DIY Drones via Twitter
RT @MarvelmindMaxim: Precise (±2cm) tracking for racing boats and autonomous boats. Works outdoor and indoor. #autonomous #AutonomousVehic…
Aug 3
DIY Drones via Twitter
RT @MarvelmindMaxim: Helping PixHawk folks to fly autonomous quadcopters using PX4 and ArduPilot. https://marvelmind.com/drones/ Equally suitab…
Aug 3
DIY Drones via Twitter
RT @davsca1: Here is the video of the performance. This paper was a huge group effort and more than one year of work, where we combined and…
Jul 16
DIY Drones via Twitter
RT @chr1sa: My talk on PX4 and FAA certification is coming up at 1:45 PST today on the PX4 Dev Summit livestream. Includes some cool new st…
Jul 7
DIY Drones via Twitter
RT @seesharp: I'm tuned into the PX4 / Dronecode free live conference. Great stuff. Microsoft AirSim talk in 10 minutes. https://t.co/0zbZ2…
Jul 6
DIY Drones via Twitter
RT @chr1sa: Here's today's best times in the @DIYRobocars/@donkey_car virtual race of AI cars compared to last month's race on the same tra…
Jun 20
DIY Drones via Twitter
Jun 19
DIY Drones via Twitter
The difference between proper RC cars and toys (when you’re turning them into robots) https://ift.tt/2MUTvxd
Jun 14
DIY Drones via Twitter
RT @Struktur3D: We have just posted on @DIYDrones for the first time in a long time. Continuing with our search for a #lasercutting service…
Jun 5
DIY Drones via Twitter
Review of the new Nivida Jetson NX for robocars https://ift.tt/36TrS0G
Jun 2
DIY Drones via Twitter
RT @chr1sa: Somehow I missed this, but last week @Nvidia released a new version of its Isaac robot development framework. Lots of new Lidar…
May 31