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Two rectangular lithium-ion camera batteries with textured dark finish and gold contacts

Kastar

Kastar BP-915G 2-pack camera battery 7.4V 3500mAh 25.9Wh

SKU CH-HRVY-4HYVN

Two 7.4 V 3500 mAh Li-ion packs deliver 25.9 Wh each for Phase One and Riegl cameras

  • Total capacity25.9 Wh
  • Pack contents2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 2 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Two-pack extends shooting sessions
  • 4 V 3500 mAh lithium-ion cells deliver 25.9 Wh capacity
  • Built-in protection guards against over-charge, over-discharge, over-voltage, over-current and over-heating
  • UL1642 and CE certified cells ensure safe replacement use
  • Compatible with Phase One P25, P30, P40, P45, P65, XF 70301, IQ series and Riegl FG21-P

Two-pack Li-ion power for Phase One & Riegl

This Kastar BP-915G twin pack supplies two 7.4 V 3500 mAh lithium-ion batteries rated at 25.9 Wh each. They are built as direct replacements for a wide range of Phase One digital backs and the Riegl FG21-P, so medium-format shooters can keep shooting without hunting for proprietary cells.

Studios and field crews needing drop-in spares

Photographers who rely on Phase One P25 through P65+, IQ, IQ3, IQ4 or XF 70301 bodies, plus Riegl FG21-P operators, will find these packs match the original voltage and form factor. Users of other camera systems or those requiring a different voltage should look elsewhere.

7.4 V 3500 mAh 25.9 Wh per cell

Each battery delivers 7.4 volts and 3500 mAh for 25.9 watt-hours of capacity. That single figure determines whether the pack fits your power budget and runtime expectations for the listed Phase One and Riegl models.

How it compares

Measured against everything we stock in Camera Batteries, Grips & Chargers, at today’s prices. Recalculated every night.

Price $26.99
Pricier than about 74% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBP-915G
Part numberBA-2B-BP915G-I
Total capacity25.9 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 2 in
In the box
Pack contents2 Batteries

Other versions of this model

5 more in the same range

Questions about this item

How much heat does the 7.4 V 3500 mAh pack generate during long studio sessions?

The lithium-ion cells meet UL1642 and CE safety standards and include built-in over-heating protection, so the pack stays within safe temperature limits during extended use.

What charger do I already need to recharge these BP-915G batteries?

You need a charger designed for 7.4 V lithium-ion packs compatible with Phase One XF, IQ, P-series or Riegl FG21-P cameras.

Will the 25.9 Wh capacity work in my older Phase One P25 back?

Yes, the pack is listed as a direct replacement for the Phase One P25 and P25+ models.

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