---
id: guide-0048
title: "Battery care and cold-weather starting"
category: guide
subtopic: battery-care
page_type: guide
source_url: "https://www.castlechevymchenry.com"
tags: ["maintenance", "battery", "winter", "cold-weather"]
questions:
  - "How do I keep my car battery healthy?"
  - "Why won't my car start in winter?"
  - "How cold can a battery handle?"
  - "What should I do if my battery dies?"
related: [winter-tires, owner-resources]
dealer: Castle Chevrolet McHenry
---

A healthy battery is your engine's best friend-especially when temperatures drop. Cold weather reduces battery power by up to 50%, so a weak battery that works in summer might struggle in January.

**How to maintain battery health:**
Keep battery terminals clean and corrosion-free, secure the cable connections, and avoid leaving lights or accessories on when the engine is off. If your car sits unused for weeks, occasional short drives help keep the charge steady.

**Signs of trouble:**
Slow cranking, dim headlights, or a clicking sound when you turn the key all point to a weakening battery.

**What Castle Chevrolet McHenry offers:**
Our Service department can test your battery's health and replace it if needed-before winter arrives. A new battery is affordable insurance against a cold-morning surprise. Call (779) 600-2956 to schedule a free battery inspection or to learn about battery replacement options.