Technology

To ensure business continuity and near 100% uptime for the purpose of meeting customer demands or regulatory expectations, many businesses incorporate backup stationary power into their value chain. In the event of a power supply failure, the stationary power kicks in.

Most, if not all, stationary power comes in the form of fossil fuel generators, Uninterruptible Power Supply (UPS), and backup batteries. Where batteries are concerned, in particular lead acid batteries that are commonly used, they are often replaced way before their designed lifespan due to the typical usage patterns. Typically, the designed lifespan of batteries is up to 20 years. But the actual lifespan is really 2 to 10 years – only 30% to 50% of their designed lifespan.

What causes the short actual lifespan

This is mainly due to battery terminals’ sulfation during discharge. Battery terminals return to normal when you recharge it. However, the process is not 100% efficient as sulfate crystal remnants attach to the terminals, thickening crystals, and worsening battery capacity over multiple cycles of charging and discharging.

The sulfation build-up side effect is unavoidable, and after 3 to 4 years, it substantially accelerates. More energy is then needed for the entire process and the battery temperature rises, which reduces the battery life. Other factors also come into play such as the reduction of electrolytes, corrosion of the electrode plates, and the decline of active materials.

Effects

This incurs a huge cost for businesses that have to keep disposing and replacing these batteries. In terms of sustainability, this practice isn’t viable in the long run for both company and the environment. Cost goes up, and with the waste accumulated, the company is contributing to large carbon emissions which is harmful for the environment.