Many drivers assume a car battery fails because of cold weather. In Ghana, the bigger enemy is heat. High temperatures speed up the chemical reactions inside a battery, which helps it work in the moment but wears it out faster over time. The fluid inside can evaporate, the internal plates corrode sooner, and a battery that seemed fine last week can suddenly leave you stranded at the junction or in the market car park.

The good news is that a few simple habits can help your battery last longer and give you plenty of warning before it fails.

Why heat is hard on batteries

A standard lead acid car battery stores energy through a chemical reaction between lead plates and an acid solution. Heat makes that reaction run faster. That sounds helpful, but it also means the plates break down more quickly and water in the solution evaporates. Under the bonnet, engine heat adds to the outside temperature, so the battery often sits in one of the hottest spots on the vehicle.

Heat damage builds up quietly. You may not notice anything during the hot months, then find the battery struggles when it is finally asked to work hard, for example on an early morning start after the car has been parked for a few days.

Signs your battery is weakening

Watch out for these warning signs:

• Slow cranking. The engine turns over lazily, especially first thing in the morning.
• Dim lights at start up. Headlights or dashboard lights fade when you turn the key.
• Corrosion on the terminals. White, blue or green powder around the battery posts.
• A swollen or cracked case. Heat can make the battery case bulge. Replace it straight away.
• Warning light on the dashboard. The battery or charging light can point to a battery or alternator problem.
• Age. In a hot climate, a battery that is a few years old deserves a closer look at every service.

Simple ways to make your battery last

• Park in the shade. A shaded spot or covered parking keeps the bonnet cooler. Even a tree or a building's shadow helps.
• Keep the terminals clean and tight. Loose or dirty connections make the battery work harder. With the engine off, a wire brush and a little baking soda and water will clean light corrosion. Dry everything well afterwards.
• Make sure it is held down firmly. Our roads can be rough. A loose battery vibrates, and vibration damages the plates inside.
• Avoid draining it with the engine off. Running the AC fan, radio or lights while parked drains the battery, and deep draining shortens its life.
• Drive regularly. Short trips and long periods parked do not give the alternator time to recharge the battery fully. If the car sits for a while, take it for a proper drive now and then.
• Check the fluid if your battery allows it. Some batteries have removable caps. If yours does, ask your mechanic to check the level and top up with distilled water only.
• Test it at every service. A quick battery and charging system test shows how healthy the battery is before it lets you down.

Do not forget the charging system

A new battery will not last if the alternator is undercharging or overcharging it. Overcharging in particular cooks a battery from the inside. If you have replaced a battery recently and it is already struggling, ask for the alternator and voltage regulator to be checked as well.

Choosing a replacement battery

When it is time for a new battery, look for:

• The correct size and terminal layout for your vehicle, so it fits securely and the cables reach without strain.
• The right capacity and cranking power for your engine. Check your owner's manual or the label on your current battery.
• A battery suited to hot climates and a fresh manufacturing date, so it has not been sitting on a shelf for months.
• A clear warranty from the seller.

Never guess. A battery that is too small will struggle, and one with the wrong layout can be dangerous to fit.

Safety first

Battery acid is corrosive, and batteries can give off flammable gas. Wear gloves and eye protection, keep sparks and flames away, and when disconnecting, remove the negative terminal first and refit it last. If you are not confident, let a professional handle it.

Need a new battery? Talk to Oseas

Oseas can help you choose the right battery for your car, SUV or truck. Browse our products online and tap Enquire Now on any item, or call us on +233 24 354 3747 or +1 (347) 575-7454. Tell us your vehicle make, model and year and we will point you to the right battery.