Drones / UAV
LiPo C-Rating & Voltage Sag Checker
Inputs
Pack Capacity
mAh
Cells (S)
1
2
3
4
5
6
7
8
10
12
Series cell count. 4S = 14.8 V nominal, 6S = 22.2 V nominal.
Continuous C Rating
C
Headline rating from the pack label. Most race-pack ratings are optimistic — assume 60–80% of the printed value.
Burst C Rating
C
Short-duration peak rating (often 2× continuous on race packs).
Number of Motors
3
4
6
8
Hover Current per Motor
A
Current per motor at hover throttle on this pack — from the motor manufacturer's thrust table at the hover-thrust row.
Max Current per Motor
A
Current per motor at 100% throttle on this pack. Use the manufacturer table's max row.
Per-Cell Internal Resistance
mΩ
From an IR-capable charger reading (iSDT, ISDT, ToolkitRC). Healthy LiPos: 2–5 mΩ; mid-life: 5–10 mΩ; ageing: 10+ mΩ.
Result
version
1.0.0
LiPo C-Rating & Voltage Sag Checker — Embed · ToolSamurai