🔋 LiPo Voltage Calculator
Enter your pack's cell count to see its nominal, fully charged, and safe storage voltages — the numbers your charger and battery checker should read.
⚡ What Should Your Pack Read?
What is a LiPo Voltage Calculator?
It turns a LiPo pack's cell count into the voltages that matter: the nominal rating at 3.7 V per cell, the fully charged 4.2 V per cell, and the 3.8 V per cell you should store the pack at between flights.
Use it to confirm what your charger and battery checker should read, to set a storage charge, and to sanity-check a pack's health. Never exceed the full voltage or discharge below roughly 3.3 V per cell.
❓ Frequently Asked Questions
What do nominal, full, and storage voltage mean?
Nominal is the pack's rated voltage at 3.7 V per cell — the figure used to label a battery. Full is 4.2 V per cell, the maximum a healthy LiPo should ever reach when charged. Storage is about 3.8 V per cell, the level that keeps cells healthiest when a pack sits unused.
What does the 'S' rating mean?
S is the number of cells wired in series. A 4S pack has four 3.7 V cells stacked to give 14.8 V nominal. More cells in series means higher voltage, which is why racing and heavy-lift drones run 4S, 6S, or more for extra power.
Why store LiPos at 3.8 V per cell?
Leaving a LiPo fully charged or fully drained for days stresses the chemistry and shortens its life. Storing at around 3.8 V per cell — the storage voltage — greatly slows that aging. Most smart chargers have a dedicated storage-charge mode that targets this level.
Can I charge past the full voltage?
No. Charging a LiPo above 4.2 V per cell is dangerous and can cause the cell to swell, vent, or catch fire. Always use a balance charger set to the correct cell count, charge on a fireproof surface, and never leave packs charging unattended.