ProMaster USB-C BLX-1 OM System Lithium Ion 7.2V 2250mAh Battery

ProMaster USB-C Rechargeable Lithium-Ion Battery (OM System BLX-1 Replacement)
High-Capacity Smart Power Pack – 2,250 mAh / 16.2 Wh Output, Integrated Direct USB-C Charging Port, Dual-Color LED Status Indicator, Full Micro Four Thirds System Compatibility (Supports OM System OM-1, OM-1 Mark II, & OM-3), Fully Compatible with OEM External Chargers & In-Camera USB Power, Multi-Stage Electronic Circuit Protection, Includes USB Type-C to Type-C Cable & Dual-Bay Protective Storage Travel Case (Excellent Condition)

The ProMaster USB-C Rechargeable Lithium-Ion Battery is an advanced power solution designed to replace the OM System / Olympus BLX-1 battery pack. Engineered for Micro Four Thirds wildlife photographers, outdoor adventure documentarians, macro specialists, and hybrid content creators, this pack features an onboard USB-C charging port built directly into the battery casing. This configuration allows field photographers to recharge spare batteries via portable power banks, vehicle USB outlets, or standard USB wall blocks without hauling proprietary external battery cradles or taking camera bodies out of service for internal charging.

Constructed with high-grade lithium-ion cells delivering 2,250 mAh (16.2 Wh) of energy at 7.2V, this battery reliably powers high-frame-rate continuous shooting, computational photography modes, and high-bitrate 4K video capture on OM System flagship bodies. It provides complete triple-mode charging flexibility: recharge directly through its integrated USB-C port, inside compatible camera bodies via in-camera charging, or using standard OEM external dual-bay chargers (such as the BCX-1). A built-in LED charging indicator glows red during active charging and transitions to solid green when full capacity is reached in approximately 4.5 hours (using a 2.0A USB-C source). The pack is equipped with integrated electronic safety circuitry guarding against overcharge, deep discharge, overcurrent, overvoltage (voltage regulation), and short circuits, and ships with an impact-resistant two-compartment storage case that insulates the terminal contacts from debris and accidental metal shorting while holding the included USB-C cable or an extra spare battery.

KEY FEATURES & PERFORMANCE HIGHLIGHTS

Integrated Direct USB-C Charging Port: Recharge conveniently on location using power banks, vehicle USB ports, or laptop power bricks without packing an external dock.

High-Capacity 2,250 mAh Reserve: Premium-grade lithium-ion cells provide 16.2 Wh of sustained power for intensive burst sequences and extended 4K video recording.

Dual-Color LED Status Lamp: Onboard indicator glows red during active charge cycles and switches to solid green when replenishment is complete.

Universal Triple-Method Charging: Recharges via direct USB-C input, inside compatible camera bodies via in-camera charging, or on standard external wall chargers.

Built-In Multi-Stage Circuit Protection: Comprehensive internal circuitry guards against overcharge, deep discharge, overcurrent, overvoltage regulation, and short circuits.

Reusable Dual-Bay Travel Storage Case: Impact-resistant snap case stores the battery and charging cable together, or holds two spare batteries while protecting contacts from shorting.

COMPREHENSIVE CAMERA COMPATIBILITY

OM System Micro Four Thirds Cameras: OM System OM-1, OM System OM-1 Mark II, OM System OM-3

Replaces OEM Battery Model: OM System BLX-1 (V281410BE000)

TECHNICAL SPECIFICATIONS

Product Type: Rechargeable Lithium-Ion Camera Battery with Direct USB-C Port

Brand: ProMaster

Battery Chemistry: Lithium-Ion (Li-Ion)

Voltage: 7.2 V

Rated Capacity: 2,250 mAh / 16.2 Wh

Direct Charging Interface: Built-In USB Type-C Female Port

Minimum Charging Input Current: 0.5 A

Preferred Charging Input: 2.0 A at 5V (via USB-C Power Source)

Recharge Time: Approx. 4.5 Hours (from fully depleted to 100% with 2.0A input)

Status Indicator: Integrated Bi-Color LED (Red: Charging / Green: Fully Charged)

Alternative Charging Methods: Compatible with OEM OM System External Chargers (BCX-1) & Supported In-Camera USB Charging Systems

Built-In Protection Circuitry: Overcharge Protection, Over-Discharge Protection, Overcurrent Protection, Overvoltage Regulation, Short-Circuit Protection

Battery Dimensions: Approx. 2.15 x 1.54 x 0.83 inches / 54.6 x 39.1 x 21.0 mm

Battery Weight: Approx. 2.86 oz / 81 g

Storage Case Dimensions: Approx. 3.78 x 2.72 x 1.14 inches / 96.0 x 69.0 x 29.0 mm

Total Kit Weight: Approx. 4.69 oz / 133 g (Battery, USB-C Cable & Hard Storage Case)

Physical Condition: Excellent cosmetic, terminal, and fully functional operational condition

Included Accessories: ProMaster 2,250 mAh USB-C BLX-1 Battery, USB Type-C to Type-C Cable, Dual-Bay Hard Storage Case

Color / Finish: Matte Black Housing with White Technical Markings

Function: Micro Four Thirds Field Power, High-Speed Continuous Burst Capture, Extended Landscape & Wildlife Photography, 4K Video Production & Portable Travel Charging