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Battery Reconditioning (InfoLithium)

Repair & Restorationintermediate3mo ago

Understanding, sourcing, and maintaining InfoLithium F-series batteries for Mavica cameras.

InfoLithium F-series

All digital Mavica floppy cameras use Sony's InfoLithium F-series batteries. The "Info" prefix means the battery contains a microchip that communicates remaining capacity to the camera — enabling the on-screen battery level indicator.

Battery Options

BatteryCapacityRuntime (approx.)
NP-F3307.2V 1200mAh30-45 min
NP-F5507.2V 2200mAh60-90 min
NP-F9707.2V 6300mAh3-5 hours

The NP-F330 ships with most Mavica cameras. The NP-F550 and NP-F970 are the same form factor but physically larger — they protrude from the battery compartment but work perfectly.

Third-party batteries

Genuine Sony NP-F batteries are long discontinued. Third-party replacements are widely available (Wasabi Power, RAVPower, etc.) and work well. Key considerations:

  • The InfoLithium chip may not be present — the camera will show "---" instead of minutes remaining, but otherwise functions normally
  • Quality varies — stick to known brands with good reviews
  • Capacity claims are often inflated — expect 60-70% of advertised mAh

Reconditioning old batteries

Lithium-ion batteries that have been stored fully depleted for years may refuse to charge. The cells may have dropped below the protection circuit's minimum voltage:

  1. Never force-charge a lithium battery that won't charge normally
  2. If the charger does nothing (no light), the cells may be unrecoverable
  3. For batteries that charge but die quickly: run 3-4 full charge/discharge cycles
  4. Store batteries at ~50% charge for long-term storage

Charger Options

  • BC-V615 — Sony's original charger, works with all NP-F batteries
  • AC-V700 — Dual-purpose AC adapter + charger
  • Third-party dual chargers with LCD readout are excellent modern replacements