The part number **72-059** is most commonly associated with **Interstate Batteries** as a high-capacity, heavy-duty Lead-Acid battery. Below is a breakdown of its electronic specifications and technical characteristics. --- ## 🛠️ Technical Specifications: 72-059 This component is a **Group 59** automotive/industrial battery. It is designed to provide high surge currents for starting internal combustion engines and powering vehicle electronics. | Parameter | Specification (Typical) | | :--- | :--- | | **Voltage** | 12 Volts DC | | **Cold Cranking Amps (CCA)** | 590 - 650 Amps | | **Cranking Amps (CA)** | 740 - 810 Amps | | **Reserve Capacity (RC)** | 100 Minutes | | **Chemistry** | Lead-Acid (Flooded/Wet Cell) | | **Group Size** | BCI Group 59 | | **Polarity** | Top Terminal (Standard Layout) | --- ### ⚡ Electronic Characteristics #### 1. Chemical Energy Conversion The 72-059 operates on the principle of a reversible chemical reaction between lead plates and sulfuric acid. It converts chemical energy into electrical energy to provide a high "burst" of current (CCA) required by a starter motor. #### 2. Discharge & Charging * **Self-Discharge:** Like all lead-acid batteries, it experiences internal resistance that causes a slow discharge over time when not in use. * **Charge Acceptance:** The battery is designed to be recharged by an alternator. Its internal resistance is tuned to accept a high rate of charge without overheating under normal operating conditions. #### 3. Reserve Capacity (RC) The "100 Minutes" RC rating means the battery can provide a constant **25 Amp** discharge at 80°F (27°C) before the voltage drops to 10.5V. This is critical for keeping electronic control units (ECUs), lights, and safety systems active if the alternator fails. --- ### 🔍 Common Applications While primarily used in vehicles, its electronic profile makes it suitable for: * **Automotive:** Ford and Mazda passenger vehicles. * **Backup Power:** Small UPS systems or emergency lighting. * **Remote Sensors:** Powering telemetry equipment in the field where 12V DC is standard. ---