4V 500mAh battery, 4V 0.5A battery, electric mosquito swatter, emergency light, desk lamp, flashlight, small battery, lead-acid battery with sufficient capacity.

Batteries are a part of our day-to-day lives and make things easier for us. However, it's vital to choose the right ones for your needs. Saline, alkaline, lithium, standard or button cell, disposable or rechargeable: there's a battery to cater for every need. Read on to find the right battery for you.