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Stavros Korokithakis
2021-09-09 01:38:58 +03:00
parent c4449d0607
commit dcb9794467
6 changed files with 8 additions and 2 deletions
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10
content/maker-things/battery-discharge-curves.md
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@@ -16,7 +16,7 @@ Here are the graphs:
This is a genuine (as far as I can tell) Sony VTC6, fairly used in high amp draw situations (I use it in my plane), in a 3S configuration:
![curve_old-3s_2021-09-08_02-53-53.png](../../resources/58a35a63ebd14513b13a8e50c6938289.png)
![curve_old-3s_2021-09-08_02-53-53.png](../../resources/71aaa540c06d48e59559d05627ceffa4.png)
You can see that it output around 2600 mAh before I stopped it at 3V, which is quite good.
@@ -24,10 +24,16 @@ You can see that it output around 2600 mAh before I stopped it at 3V, which is q
This is a pretty blatantly fake "Sony VTC6", brand new, in a 2S configuration:
![curve_new-vtc6_2021-09-08_18-54-58.png](../../resources/1be705ff4fe44682b6491cf8631effe7.png)
![curve_new-vtc6_2021-09-08_18-54-58.png](../../resources/2d20e92b9b2247e39de7458e0b341d45.png)
The performance falls off a cliff after around 3.6V, and it only outputs 1600 mAh before it dies completely.
Trying to draw 6-7A is even more spectacular (and it gets very hot to the touch):
![curve_new-vtc6-6a_2021-09-08_23-57-29.png](../../resources/b3a7a012f9d5418e9e2e9867fd23df61.png)
Notice the huge voltage sag right as the load starts drawing.
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