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Two Kastar BP-915G batteries and a dual-slot USB charger with LCD display

Kastar

Kastar BP-915G 2-pack battery & LTD2 USB charger for Phase One P25+ P30+ P40+

SKU CH-9DSA-29NTF

Two 3500 mAh lithium-ion batteries and a dual USB charger with LCD status for Phase One P25+ P30+ P40+ cameras

  • Total capacity25.9 Wh
  • Pack contents1 Charger + 2 Batteries
  • Battery chemistryLi-Ion
  • Product typeBattery & Charger
  • Product dimensions5 × 3 × 2 in
  • Key featuresLCD USB Dual charger, can charge 2 batteries at the same tim
  • Two spare batteries keep medium-format backs shooting longer
  • 3500 mAh lithium-ion cells deliver 25.9 Wh each
  • USB-C and Micro-USB inputs let you charge from common power sources
  • Dual-bay charger powers both packs simultaneously at 800 mA per slot
  • LCD screen shows real-time charge level and status for each battery

Two-battery kit for Phase One backs

This Kastar set includes two BP-915G lithium-ion batteries and an LTD2 dual-slot USB charger. Each cell delivers 7.4 V and 3500 mAh for 25.9 Wh capacity. The kit targets photographers using Phase One P25+, P30+, P40+ and compatible IQ-series digital backs who need spare power for long sessions.

USB charger with swappable plates

The LTD2 unit accepts 5 V 2–3 A input through Micro-USB or Type-C and can charge both batteries simultaneously at 4.2 V 800 mA per slot. An LCD shows charge status and remaining capacity for each cell. Interchangeable plates let the same charger serve other battery models, reducing the number of accessories to carry.

Low heat and silent operation

Lithium-ion chemistry and the modest 800 mA charge rate keep temperatures low during typical charging cycles. No fan is present, so operation is silent. The 15 W maximum input draw is well within the capability of standard USB power banks or wall adapters.

How it compares

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

Price $29.99
Pricier than about 77% of the 5,900 comparable items (median $17.99).

Specifications

Product
Brand nameKastar
Model nameBP-915 BP-915G
Part numberCH-LTD2-2B-BP915G-J
Total capacity25.9 Wh
Product typeBattery & Charger
Power
Battery chemistryLi-Ion
Size & build
Product dimensions5 × 3 × 2 in
In the box
Pack contents1 Charger + 2 Batteries

Other versions of this model

5 more in the same range

Questions about this item

How long can the 25.9 Wh batteries sustain a Phase One P40+ before needing a recharge?

Each 3500 mAh cell delivers 25.9 Wh at 7.4 V, so run-time depends on the back’s power draw — expect several hours of typical shooting per battery.

Does the LTD2 charger get hot or loud when both batteries charge at 800 mA all day?

The charger runs silently with no fan; it may become warm during dual 800 mA charging but stays within normal operating temperature.

What power source must I already have to run the LTD2 charger via USB-C or Micro-USB?

Any 5 V 2–3 A USB power adapter or power bank supplying up to 15 W will drive the charger through its Type-C or Micro-USB port.

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