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Rectangular lithium-ion camera battery, dark finish, 7.4V 3500mAh 25.9Wh

Kastar

Kastar BP-915G camera battery 1-pack 7.4V 3500mAh 25.9Wh

SKU CH-VJ6A-JZ8BH

Lithium-ion 7.4V 3500mAh replacement battery for Phase One IQ, IQ3, IQ4, P25, P30, P40, P45 and P65 series backs

  • Total capacity25.9 Wh
  • Pack contents1 Battery
  • Battery chemistryLi-Ion
  • Product typeBattery
  • Product dimensions3 × 2 × 1 in
  • Key featuresHigh Capacity and Manufacture Price.
  • Longer shooting sessions with 3500 mAh capacity
  • Reliable power at 7.4 V lithium-ion voltage
  • Safe operation backed by UL1642 and CE standards
  • Built-in protection against over-charge and over-heating
  • Fits Phase One IQ, IQ3, IQ4 and P-series models

Compatible Replacement Battery

The Kastar BP-915G is a lithium-ion camera battery built to replace the original power pack for Phase One IQ, IQ3, IQ4, P25, P30, P40, P45 and P65 series backs as well as the Riegl FG21-P. It delivers a nominal 7.4 V and 3500 mAh capacity in a single-cell pack.

Medium-Format Shooters Needing a Spare

Photographers using the listed Phase One or Riegl bodies who want a reliable backup for long sessions will find the 25.9 Wh rating useful. Users of other camera systems or those requiring a multi-battery charger kit should look elsewhere.

25.9 Wh Energy Rating Decides Fit

The 25.9 Wh figure determines whether the pack meets airline carry-on limits and matches the original equipment specification. Verify that your back accepts this exact watt-hour value before purchasing.

How it compares

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

Price $14.99
Cheaper than about 60% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBP-915G
Part numberBA-1B-BP915G-H
Total capacity25.9 Wh
Product typeBattery
Power
Battery chemistryLi-Ion
Size & build
Product dimensions3 × 2 × 1 in
In the box
Pack contents1 Battery

Other versions of this model

5 more in the same range

Questions about this item

How do I install the BP-915G battery in my Phase One IQ4, and what step is often missed?

Slide the 7.4V pack into the camera's battery compartment until the latch clicks; the step users miss is confirming the contacts align before forcing the door shut.

What maintenance will the BP-915G lithium-ion cell need over its life?

No scheduled maintenance is required; store at roughly half charge if unused for months, and replace the pack when runtime drops well below the rated 3500mAh capacity.

What limit appears first during continuous shooting with the BP-915G?

The built-in protection circuit will cut output if temperature or current exceeds safe thresholds, typically before the 25.9Wh capacity is fully depleted.

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