FLIR E5 Thermal Camera Compatible Battery 7.4V 2200mAh 10038412

ICCNexergy FLIR 5000 / 5200HD2 — 7.4V Li-ion Replacement Battery (10038412)

This 7.4V, 2200mAh Li-ion battery replaces part number 10038412 in the FLIR E5 thermal imaging camera. It fits the 5000, 5200HD2, and 9950018 model variants. The cell chemistry and BMS profile match the original draw requirements of the infrared detector and display stack.

• FLIR E5 platform compatibility: The 5000, 5200HD2, and 9950018 variants share the same 7.4V rail, battery connector pinout, and BMS handshake protocol — which is why one battery pack covers the full group without modification.
• Bench tested on actual hardware: We ran this pack on a FLIR E5 unit and confirmed the BMS negotiated correctly at power-on, the detector heating element drew steady current without triggering overcurrent cutoff, and cell voltage held above 7.0V under combined display and IR detector load.
• Cold-start stabilisation on the E5: Allow the camera to complete its warm-up cycle fully before capturing thermal images — the uncooled microbolometer detector needs the internal electronics to reach a stable thermal baseline or your early readings will drift by several degrees Celsius.

Why the FLIR E5 shuts down mid-inspection on a new battery

The E5 runs two continuous loads simultaneously: the LCD display and the detector's resistive heating element. During extended inspections, this combined draw can exceed what the BMS expects from a partially depleted cell, triggering a protection cutoff even when the battery indicator still shows charge remaining. A counterfeit or out-of-spec pack will often have a lower rated discharge current, which makes this worse. The BMS in the 10038412-compatible pack is rated for this dual-load profile — if cutoffs persist, check cell voltage under load with a multimeter; it should hold above 6.8V during normal operation.

Thermal accuracy dropping before the battery gauge hits low

The microbolometer in the E5 is sensitive to supply voltage — as cell voltage sags toward 7.0V, the detector's reference circuit loses precision and temperature readings can drift by 2–4°C before the low-battery icon appears on screen. This is not a camera fault; it is a voltage sensitivity threshold built into uncooled detector hardware. Swapping to a fresh battery and allowing a 60-second warm-up will restore measurement accuracy. If drift continues on a fully charged pack, measure open-circuit voltage at the battery terminals — it should read at least 8.3V on a fully charged 7.4V Li-ion cell.