According to Steorn, giving a precise energy balance was not possible due to the "complexity" of the simple engine. Since it may not be excluded that the device was operated exclusively by the rechargable battery (1.2 Volt/10 Ah), the demonstration is not appropriate to prove Steorn's claims. Further information may be obtained only by an independent examination which e.g. monitored charging voltage and charging current of the battery (or of a large capacitor) over a longer period of time in order to establish the system's energy balance. According to Steorn, they were not prepared to consider the use of a capacitor as a buffer store instead of the rechargeable 10 Ah battery, since capacitors allegedly had „a delay in delivering current“.<ref>Comment by Steorn-CEO Sean McCarthy</ref> In fact, capacitors are able to provide current without any delay. | According to Steorn, giving a precise energy balance was not possible due to the "complexity" of the simple engine. Since it may not be excluded that the device was operated exclusively by the rechargable battery (1.2 Volt/10 Ah), the demonstration is not appropriate to prove Steorn's claims. Further information may be obtained only by an independent examination which e.g. monitored charging voltage and charging current of the battery (or of a large capacitor) over a longer period of time in order to establish the system's energy balance. According to Steorn, they were not prepared to consider the use of a capacitor as a buffer store instead of the rechargeable 10 Ah battery, since capacitors allegedly had „a delay in delivering current“.<ref>Comment by Steorn-CEO Sean McCarthy</ref> In fact, capacitors are able to provide current without any delay. |