Phone battery myths and facts: what really helps it last

Phone batteries are surrounded by rumours. Some advice is outdated, and some is simply wrong. Here are the most common myths and what is actually true for modern lithium-ion batteries.

Myth 1: You must drain the battery fully before charging

Fact: Modern batteries do not have the "memory effect" of older types. Deep discharges actually wear them faster. Topping up during the day is fine.

Myth 2: Charging overnight ruins the battery

Fact: Phones stop charging when full, and many have smart charging features. Heat is a bigger problem than overnight charging. Do not charge under a pillow or in a hot place.

Myth 3: Closing all apps saves battery

Fact: Swiping away apps that are not actively running usually does not help, and reopening them uses more energy. Only close apps that are misbehaving or using a lot of power.

Myth 4: Fast chargers always damage batteries

Fact: Chargers designed for your phone are generally safe. The risk comes from cheap, unbranded chargers that deliver unstable power. Use the charger that came with your phone or one from a trusted brand.

What really helps

• Keep it cool: high temperatures are the biggest enemy of battery life. Avoid leaving your phone in a hot car or in direct sun.
• Avoid extremes: keeping charge between roughly 20% and 80% is gentler than regularly going to 0% or 100%, though you should not worry about occasional full charges.
• Lower screen brightness: the display is usually the largest power user.
• Limit background activity: check which apps use the most power and restrict the ones you do not need.
• Update your phone: updates often include power improvements.

Signs of a worn battery

If your phone shuts down at 30%, drains very quickly or gets hot while idle, the battery may be ageing. Check the battery health setting if your phone offers one. A replacement at a reputable repair shop is often cheaper than buying a new phone.

Safety first

If a battery swells, leaks or feels very hot, stop using it and take it to a qualified technician. Do not puncture or heat it.

Treat your battery kindly and it will serve you longer, but do not stress over small habits. Keeping it cool and using good chargers matters most.

Written by the EarnNaija team at EarnNaija Digital Technologies.

This article is general information, not financial or legal advice. Earnings are never guaranteed. See our fees page for the exact costs.