import type { InternalResistanceInput, InternalResistanceResult } from './types.js';
/**
 * Calculate battery internal resistance from OCV and load voltage
 *
 * @formula R = (OCV - Vload) / I
 * @reference IEC 61960, direct current internal resistance (DCIR)
 * @param input - Open circuit voltage, load voltage, and load current
 * @returns Resistance in Ohm and mOhm, voltage drop, and power loss
 */
export declare function internalResistance(input: InternalResistanceInput): InternalResistanceResult;
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