RC Battery Calculators

Move from battery voltage and capacity to runtime, continuous current, charge time and charger wattage, one step at a time. These tools help you check that a battery pack and charging setup make sense on paper before you connect anything.

Voltage & Battery Configuration

LiPo Voltage

Nominal and full-charge voltage from LiPo cell count.

Cells

Open Calculator

Battery Series Parallel

Combined pack voltage and capacity for series/parallel wiring.

VmAhSP

Open Calculator

Runtime & Capacity

RC Battery Runtime

Ideal and adjusted runtime from capacity, current and usable fraction.

mAhA%

Open Calculator

C Rating & Current

LiPo C Rating

Theoretical continuous current from capacity and C rating.

mAhC

Open Calculator

Charging & Charger Power

LiPo Charge Time

Ideal charge time estimate from capacity and charge current.

mAhA

Open Calculator

RC Battery Charger Wattage

Charger output power from cell count and charge current.

CellsA

Open Calculator

ESC Current Planning

RC ESC Amp

ESC current rating target from measured draw and safety margin.

Open Calculator

RC Battery Calculators

Voltage & Battery Configuration

LiPo Voltage

Battery Series Parallel

Runtime & Capacity

RC Battery Runtime

C Rating & Current

LiPo C Rating

Charging & Charger Power

LiPo Charge Time

RC Battery Charger Wattage

ESC Current Planning

RC ESC Amp

Related guides and concepts