What the thread found

• Rapid focus motor movements or hitting lens hard stops can cause sudden power loss on a camera sled, which resets by cycling the power switch.
• The issue is typically caused by instantaneous current draw exceeding the battery's maximum output capacity, triggering its protection circuit.
• Internal power wiring in some sled posts uses very thin gauge cables that create voltage drop under high current demand, even if not causing visible damage.
• Upgrading sled post power wiring from thin coiled cables to thicker gauge speaker cable (approximately 1.5mm² or AWG 15) can resolve the problem.
• Paralleling multiple batteries together using P-tap connectors increases available current capacity and can prevent tripping.
• Focus motor controllers can draw abnormal amounts of amperage that may exceed what some camera sled power systems can safely supply.
• Battery thermal overload protection circuits can activate during high current demand situations and cause temporary power loss that recovers within a minute.

Depends on

• The solution of upgrading wiring applies specifically to sleds with accessible screw terminals and may not work for all sled models.
• The exact current draw specifications of the focus motor system were not provided in the discussion.
• One participant mentioned never definitively identifying the root cause of their similar issue.
• The effectiveness of paralleling batteries depends on whether the specific battery plate has P-tap connectors available.
• The discussion focuses on one specific sled model from 2009 and may not apply to more recent equipment.

Gear in this thread

BFD

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