2008Batteries/Power forum
Battery selection and quantity requirements for powering 35mm and HD cinema cameras on stabilized rigs
18 years old. Gear and prices may have changed since.
What the thread found
- Professional camera work requires a minimum of three battery sets, with four to five sets being preferable to account for power-hungry cameras, charger limitations, and battery failures during full shooting days.
- The Sony F900 draws approximately 10 amps from the camera plus an additional 5 amps for rig accessories, totaling 15 amps load, which Trimpac batteries cannot reliably deliver due to excessive current draw.
- Trimpac nickel-cadmium batteries have a long operational lifespan and can supply high current draw when needed, making them suitable for basic 35mm work when camera power requirements are moderate.
- Hytron 140 batteries provide approximately 40 minutes of runtime per charge on power-hungry cameras after several usage cycles, requiring four backup batteries for every battery on a charger with a 2.75-hour charge cycle.
- Dionic 90 batteries have proven reliable over multiple years and many charge cycles, successfully powering cameras ranging from 35mm formats to 435 at 96 frames per second.
- Operators successfully used six Trimpacs combined with two Hytron 120 batteries to power various camera formats including 35mm, 235, 435, Arricam, HD, and Silicon 2K over a four-year period.
- Trimpac batteries are wider than Hytron or Dionic models, creating potential interference with operator leg positioning during handheld rig operation.
- Lithium-ion batteries from certain manufacturers may have delayed delivery or reliability issues that warrant caution before commitment.
Depends on
- Discussion focuses on stabilized rig power requirements and may not apply to other camera support methods.
- Runtime calculations are based on specific charger models and degrade with battery age and cycle count.
- F900 requirements mentioned but noted as likely to be sourced from rental equipment rather than personal batteries.
- Budget constraints mentioned by questioner may limit practical implementation of ideal battery quantity recommendations.
- The discussion does not establish definitive runtime specifications for Trimpac batteries with specific camera models.
- One negative experience with a specific lithium-ion battery manufacturer is mentioned without detailed technical analysis.