What the thread found

• Preston HU2 batteries can be repaired or recelled but involve significant costs and long turnaround times
• Sony M-style batteries can be adapted to work with Preston follow focus systems using third-party mounting solutions
• Omnishot offers an adapter system that allows Sony M-style batteries to power Preston equipment without requiring custom modifications
• Cramped Attic produces a mounting solution for adapting Sony M-style batteries to Preston follow focus systems
• Sony M-style batteries with adapter solutions cost approximately $400 for the complete package including charger and two batteries
• Fully charged Sony M-style batteries can provide 8 to 10 hours of runtime depending on how the focus control handset is operated
• Sony M-style batteries include built-in charge meters and may not reliably trigger the low voltage warning light on Preston equipment
• Local battery shops may be able to recell Preston batteries more quickly and affordably than the manufacturer

Depends on

• Report is from 2010 and product availability may have changed
• Runtime experience is specific to how the focus puller operates the handset
• Low voltage indicator compatibility with Sony batteries remains unresolved
• Experience with Cramped Attic mod is reported as second-hand recommendation

Parts

Follow Focus

Same gear or parts

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