This high power NiMH battery system is ideally suited to the power demands of today's high definition equipment and on-camera lighting systems. In lower power applications, it can provide power for many hours without limits or travel restrictions. The HyTRON 100/140 also offer an excellent counterbalance to offset the weight of a lens.With the transition to HD cameras, the HyTRON 100 typically provides up to four hours of run-time with a single battery.