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Four Kastar BP-915G Li-Ion batteries and a dual-slot USB charger with LCD display

Kastar

Kastar 4-Pack BP-915G Battery & LTD2 USB Charger for Riegl FG21-P FG21P Phase One IQ Laser IQ

SKU CH-8TZF-BR9XH

Four lithium-ion 7.4 V 3500 mAh batteries and a dual-slot USB charger with LCD status display

  • TypeBattery & Charger
  • Pack1 Charger + 4 Batteries
  • ChemicalLi-Ion
  • Capacity25.9 Wh
  • Dimensions5*3*3 Inch
  • FeaturesLCD USB Dual charger, can charge 2 batteries at the same tim
  • Four lithium-ion batteries deliver 25.9 Wh each for extended shooting
  • Dual-bay USB charger powers two packs simultaneously from Micro-USB or Type-C
  • Intelligent LCD shows real-time charge status and remaining capacity
  • 4 V 3500 mAh cells match original BP-915G specifications
  • Compatible with Phase One IQ, IQ3, IQ4, P-series and Riegl FG21-P systems

Four-battery kit for Phase One and Riegl backs

This Kastar pack supplies four 7.4 V lithium-ion BP-915G cells and one LTD2 dual charger. Each battery stores 3500 mAh or 25.9 Wh of energy. The set targets photographers using Phase One IQ, IQ3, IQ4, P25, P30, P40, P45 or P65 series backs and Riegl FG21-P units who need spare power for long field sessions.

Dual-slot charger runs from 5 V USB sources

The LTD2 unit accepts Micro-USB or Type-C input at 5 V 2-3 A up to 15 W and delivers 4.2 V at 800 mA per slot. It can charge two batteries simultaneously and shows charge status and remaining capacity on its built-in LCD. No AC adapter is included so users must provide a suitable USB power source.

Swappable plates and one Micro-USB cable included

The charger ships with a short Micro-USB cable and supports interchangeable plates to fit other battery types not listed here. The four bundled BP-915G cells are ready to use out of the box. Buyers who need plates for different models or a dedicated wall adapter will have to source those separately.

Highlights

  • Four lithium-ion batteries deliver 25.9 Wh each for extended shooting
  • Dual-bay USB charger powers two packs simultaneously from Micro-USB or Type-C
  • Intelligent LCD shows real-time charge status and remaining capacity
  • 4 V 3500 mAh cells match original BP-915G specifications
  • Compatible with Phase One IQ, IQ3, IQ4, P-series and Riegl FG21-P systems

Specifications

BrandKastar
ModelBP-915 BP-915G
Part NumberCH-LTD2-4B-BP915G-I
TypeBattery & Charger
Pack1 Charger + 4 Batteries
ChemicalLi-Ion
Capacity25.9 Wh
Dimensions5*3*3 Inch
FeaturesLCD USB Dual charger, can charge 2 batteries at the same time

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Questions about this item

How do I set up the Kastar LTD2 charger and insert the BP-915G batteries so both charge at once?

Connect the charger via Micro-USB or Type-C to a 5V 2-3A source, slide each battery into a slot until the contacts engage, and the LCD will show dual 800 mA charging.

What upkeep will the four BP-915G packs need over time?

Store them at about 40 % charge in a cool place, top them up every few months, and swap them out once they no longer deliver the rated 3500 mAh at 7.4 V.

What thermal or power limit appears first during extended shooting with these 25.9 Wh cells?

The charger caps each bay at 800 mA, so sustained high-draw use will hit the 4.2 V output ceiling before the batteries overheat.

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