Multiply the battery capacity in amp-hours (Ah) by the battery voltage to calculate watt hours (Wh). Formula: Battery capacity Watt-hours = Battery capacity Ah × Battery voltage Let's say you have a 12v 200ah lithium battery. Here's a chart about different capacity (Ah) lithium batteries into watt hours @ 12v, 24, and 48v.
A battery like this would always produce a clean, stable, 12-volt output that can power a wide variety of common devices. As long as you don't plan on pulling hundreds of amps, the best way to get 12 volts out of a lithium-ion battery made with 18650 cells is to use a 7S configuration and a buck converter.
This battery pack calculator is particularly suited for those who build or repair devices that run on lithium-ion batteries, including DIY and electronics enthusiasts. It has a library of some of the most popular battery cell types, but you can also change the parameters to suit any type of battery.
A 7S battery made from 18650 cells will have a voltage of around 24-volts which you can reduce down to 12-volts. This means that in addition to powering a 12V buck converter, you can also power a host of 24-volt devices like inverters, fans, pumps, motors, etc. Easy to use 24v to 12v buck converter.
In today’s market, Lithium-ion batteries have become the standard power source for a broad array of cordless tools. They are notable for their ability to be interchanged within a brand’s product lineup. However, many users are faced with the question of battery compatibility across different brands.
To calculate the number of cells in a battery pack, both in series and parallel, use the following formulas: 1. Number of Cells in Series (to achieve the desired voltage): Number of Series Cells = Desired Voltage / Cell Voltage 2. Number of Cells in Parallel (to achieve the desired capacity):