ATOMOS Ninja 10-bit DTE Replacement Battery 7.4V 2600mAh

ATOMOS Ninja 10-bit DTE Field Recorder — 7.4V Li-ion Replacement Battery

This 7.4V, 2600mAh (19.24Wh) Li-ion battery replaces the original cell in the ATOMOS Ninja 10-bit DTE field recorder. The Ninja DTE is a monitor-recorder used on location to capture 10-bit video from camera outputs. Long recording sessions drain the original battery, and this replacement keeps the unit running through extended shoots.

• Ninja DTE power rail fit: The Ninja DTE draws from a 7.4V nominal cell to power its display, processing board, and recording drive simultaneously. This battery matches that voltage rail and the physical form factor — 70.80 × 38.50 × 23.20mm — so it seats correctly in the battery compartment without adapter modification.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the Ninja DTE platform and confirmed the BMS accepted the cell without fault flags. The protection circuit responded correctly to end-of-discharge cutoff, and the display registered charge state through the cycle.
• First-use charge cycle on the Ninja DTE: Seat this battery in the Ninja DTE and run one full charge cycle through the unit's own charging circuit before starting a recording session — some monitor-recorder BMS systems need an internal charge cycle to correctly map the cell's discharge curve to the on-screen battery indicator.

Why the Ninja DTE battery indicator reads inaccurately on a new cell

The Ninja DTE uses a voltage-threshold model to estimate remaining charge and display it on screen. A new cell has a slightly different discharge curve than a worn original, so the indicator can misread remaining capacity for the first few cycles. The BMS recalibrates its internal reference points as the cell goes through charge and discharge. After two to three full cycles, the displayed percentage tracks closely with actual remaining capacity.

Ninja DTE showing no charge or failing to power on with a new battery installed

If the Ninja DTE does not power on with a new cell, the battery protection circuit may have tripped during shipping, dropping the cell voltage below the unit's minimum startup threshold. Remove the battery, leave it out for 30 seconds, then reinsert it and connect the charger before pressing power. If the unit still does not respond, charge the cell externally to at least 3.8V per cell (7.6V total) before reinserting. That voltage level clears most BMS under-voltage lockout states.