Cell Capacity and Pack Size

Obviously Cell Capacity and Pack Size are linked. The total energy content in a battery pack in it’s simplest terms is: Energy (Wh) = S x P x Ah x Vnom  Hence the simple diagram showing cells connected together in series and parallel. What about flexibility in pack size? There are very good reasons for … Read more

Cylindrical Cell Comparison 4680 vs 21700 vs 18650

In this Article, we will compare different Cylindrical Cell Sizes used in electric Vehicles. 4680 vs 21700 vs 18650.

Cells in Parallel

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When connecting cells in parallel all of the negative terminals are connected together and all of the positive terminals are connected together. The capacity of the parallel group is the sum of the capacity of the cells. Hence three 5Ah cells connected in parallel will give a total capacity of 15Ah. 3 cells connected in … Read more

Benchmarking Battery Packs

benchmarking battery packs

When benchmarking battery packs the intention is to create a standard list of data and then a list of references. This form will post will form the standard list that we will use going forward and hence we need to get this 90% complete before we start. The first thing to look at when benchmarking … Read more

Cells in Series

When connecting cells in series the negative terminal of the first cell is connected to the positive terminal of the second cell. The negative terminal of the second cell is connected to the positive terminal of the third cell. This continues until we reach the total number of cells required in series. The nominal voltage … Read more

Battery Capacity

The battery capacity is the current capacity of the battery and is expressed in Ampere-hours, abbreviated Ah. Battery capacity is expressed in ampere-hours. Battery capacity is effected by: Under well defined conditions this is often referred to as the Rated Capacity as the battery capacity is likely to be different under different temperature, discharge rates … Read more