Hollyland Spares - NP-F750 Battery (for Mars & Cosmo Series)

The Hollyland NP-F750 Battery is an official factory-spare Lithium-Ion power cell engineered to drive the continuous, high-draw electrical requirements of the Mars and Cosmo wireless video transmission series, as well as the Mars M1 monitoring family.

While smaller NP-F550 batteries run out of power too quickly and massive NP-F970 bricks add too much physical weight to a camera cage, the NP-F750 offers the ideal middle ground. It provides a long operational runtime without altering the balance of your handheld or gimbal-mounted camera setup.

Core Electrical and Build Features

• High-Capacity Cell Optimization: Features a robust 4400 milliampere-hour capacity rating. This provides enough energy to power a standard Mars 400S Pro or Mars 4K transmitter for up to four to five hours of continuous live broadcasting on a single charge.

• Standard Sony L-Series Form Factor: Built on the universally adopted L-series battery footprint. This means it slides perfectly into the native battery plates on Hollyland gear while remaining completely compatible with third-party field monitors, LED light panels, and camera charging docks.

• Intelligent Internal Protection Circuitry: Equipped with integrated over-charge, over-discharge, short-circuit, and thermal protection grids. These safety measures prevent the cells from swelling or overheating during long summer shoot days or when left on a fast-charger overnight.

• Memory-Free Lithium-Ion Chemistry: Utilizing modern high-density lithium cells, this battery can be topped off or partially charged at any time without experiencing memory effect, which refers to the gradual loss of maximum energy capacity when a battery is repeatedly recharged before being completely depleted.

System Interoperability

This factory power cell interfaces seamlessly with the native spring-loaded battery docks on:

• Hollyland Mars Series: Mars 300 Pro, Mars 400S Pro, Mars 4K, and Mars M1 / M1 Enhanced Monitors

• Hollyland Cosmo Series: Cosmo C1 SDI/HDMI Wireless Systems

• Industry-standard dual-slot or single-slot external Sony L-series battery chargers

Technical Specifications Matrix

• Official Spare Category: OEM Lithium-Ion Power Systems

• Ecosystem Compatibility: Hollyland Mars and Cosmo Wireless Systems / Standard L-Series Plates

• Output Voltage Rating: 7.4 Volts DC at Peak Charge

• Total Energy Capacity: 4400 milliampere-hours or 32.5 Watt-hours

• Battery Chemistry Type: High-Density Lithium-Ion

• Color Configuration Profile: Production Matte Black

On-Set Power Management Checklist

To maximize the life of your lithium-ion cells, avoid running the battery completely down to zero percent until your wireless monitor cuts off entirely. Frequently draining a lithium cell down to its absolute voltage floor strains the internal chemistry and shortens its overall lifespan. Swap out your battery for a fresh one as soon as your Hollyland transmitter or receiver status display shows the final voltage bar blinking or dropping to around 6.5 Volts.