Kastar 2-Pack Battery and LTD2 USB Charger Replacement for Phase One

In this review the Kastar 2-Pack Battery and LTD2 USB Charger Replacement is evaluated for professional photographers and technicians who need reliable spare power for Phase One systems. The bottom line: this kit is for users who value portability and the ability to charge two batteries at once without relying on proprietary camera docks. The reviewer found the dual battery charging and interchangeable plate system especially useful when switching between Phase One IQ and Laser IQ battery types, and the USB input makes it easy to top up batteries in the field.

Key Features

• Dual charging: The charger can charge two batteries at the same time, reducing downtime during shoots and travel.
• Interchangeable plate: A changeable plate design allows the charger to accept different battery shapes used across Phase One models, making it versatile for mixed gear setups.
• USB power input: With Micro-USB and Type-C input options and a 5V 2-3A 15W input rating, the unit can be powered from common USB power banks and wall adapters.
• Smart LED indicators: Intelligent LED displays show charging status and approximate battery capacity so users can see progress at a glance.
• Portable batteries: The included 7.4V 2400mAh lithium-ion batteries provide a balance of capacity and weight for extended field use while remaining easy to carry.

Who It's For

This kit suits photographers using Phase One XF, IQ, IQ3, IQ4, P25, P25 Plus, P30 and other compatible medium format backs who need spare batteries and a compact charger for location work. It is also appropriate for studios that want a low-cost backup charging solution for multiple batteries without proprietary chargers.

Those who should look elsewhere include photographers requiring manufacturer-supported batteries for warranty reasons or users who need extremely fast high-wattage charging from a single-source professional dock; this USB-based charger favors portability over ultra-fast charge rates.

Pros & Cons

Pros

• Charges two batteries simultaneously, which speeds workflow between sessions.
• Interchangeable plate increases compatibility across many Phase One models and reduces the need for multiple chargers.
• USB input options and included Micro USB cable make it easy to power from common sources while traveling.
• LED charging indicators give clear feedback on battery status during charging.

Cons

• Charge output is limited to 8.4V 800mA per slot, so charging is not as fast as some dedicated high-power chargers.

Specifications

Battery Type	Lithium-Ion
Battery Voltage	7.4V
Battery Capacity	2400mAh
Charger Input	5V 2-3A 15W (Micro-USB and Type-C)
Charger Output	8.4V 800mA (x1) 800mA (x2)
Simultaneous Charging	Yes, two batteries

Our Verdict

The Kastar 2-Pack Battery and LTD2 USB Charger Replacement is a practical, good-value option for Phase One users who need portable spare power and the convenience of charging two batteries at once. Its interchangeable plate and USB input make it versatile for field use, though those needing the fastest possible recharge should consider higher-output chargers.

Frequently Asked Questions

Will these batteries work with my Phase One IQ3 or IQ4?
Yes, the kit lists compatibility with Phase One IQ3 and IQ4 backs and related P-series models when the correct plate is used.

Can the charger be powered from a power bank?
Yes, the charger accepts 5V 2-3A input via Micro-USB or Type-C, so most power banks and USB adapters will power it.

Does the kit include charging cables?
It comes with a Micro USB cable and supports Type-C input as another charging option.