The main go-to primary cells.
With a reputation as an economical power source that
spans over a century, zinc batteries are still one of the
main go-to primary cells for many.
Zinc chloride batteries are inexpensive to produce, and are therefore among the most affordable batteries on the market. Their low cost often makes them the first choice when it comes to powering up low-drain devices, like TV remote controls, children’s toys, clocks, and flashlights. Available in a variety of sizes, including AAA, AA, and 9V, these cells are suited to just about every general purpose consumer application. Unlike its competitors in the battery market, zinc chloride batteries are non-rechargeable. But this hardly affects their popularity since they are so affordable, it’s easy to replace them with a new set once the old one is dead. Although they have a much lower energy density than alkaline batteries, zinc chloride fits the bill perfectly if you’re not invested in long-lasting power or an extended life cycle.
NiCad, or Nickel Cadmium, is an old favorite because of their solid dependability, and are best suited to applications with high amp loads. In order to get the best out of these powerhouses, they need to discharge completely before every recharge. NiMh rechargeables contain Nickel and Metal Hydride. They generally provide 10-25% increased capacity than their NiCd counterparts, and are kinder to the environment since they contain no Cadmium. NiMh batteries have longer run-times than NiCds, making them the ideal choice for applications that need sustained power over long periods. However, they self-discharge a lot faster than NiCds, and therefore require more frequent recharging.