When a battery pack has to contain electronics for balancing cells, it’s very easy for a manufacturer to include extra functions such as locking down the battery. Repair a battery, replace cells ...

The Swiss-made cargo drone that has conquered America has successfully demonstrated the efficiency of its in-house ...

However, batteries still lack the energy density of other fuels, and so flying times can be limited. Aiming to build a drone with impressively ... battery to supply extra power for short bursts ...