Voltage vs SOC Graph

(Single Cell)

Enter values above

The displayed graph and SOC estimations are based on standard operating conditions, such as room temperature. For improved accuracy, battery voltage should ideally be measured when the battery is at rest and not under active charging or discharging conditions.
The displayed values are theoretical estimates only. Actual battery State of Charge (SOC) may vary slightly depending on internal cell chemistry and operating conditions.
You may enter the number of cells based on your battery configuration. For example, a standard 9V battery can be treated as six alkaline cells.
For rechargeable batteries, avoid overcharging or overdischarging beyond the recommended voltage limits, as it may damage the battery.

More Battery Insights

Connecting batteries in series increases voltage, while parallel connection increases capacity.

Multiple cells connected in series increase total voltage but not capacity (Ah).

Batteries connected in series should ideally have the same capacity and chemistry.

Higher battery capacity (mAh/Ah) increases runtime, not voltage.

High current loads can cause temporary voltage drops in batteries.

Cold temperatures can temporarily reduce available battery capacity.

Keeping lithium batteries between 20% and 80% charge can help extend lifespan.

LiFePO4 batteries are among the safest lithium battery chemistries.

Lithium-ion batteries offer one of the highest energy densities among commercial rechargeable batteries.