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Eagle Battery Recommendations

The Eagle has multiple power options:

  1. Line Power (4-16V input range)
  2. 4 x C cell Batteries - either:
    1. Alkaline
    2. Lithium Thionyl Chloride (LTC)

The Eagle's default mAh are calculated for Alkaline cells (7000mAh) if the Voltage is under 8V, otherwise calculated for LTC batteries at 6000mAh.

The battery good flag is set to 0 when 5950mAh is used with Alkaline batteries or 5100mAh for LTC batteries.

Pulse Current

Not all LTC batteries are built the same - in general, go for Spiral Type batteries. Bobbin Type batteries may not be able to supply enough peak current.

The batteries need to have a high enough rating for pulse current to meet the following peaks:

DeviceBattery TypePeak Current (approx, @3V per cell for LTCs and @1.5V for Alkaline)
Eagle 4G Cat-M1/Nb-IoTLTC300mA
Eagle 4G Cat-M1/Nb-IoTAlkaline650mA
Eagle 2GLTC800mA
Eagle 2GAlkaline1600mA

Note: Test your batteries, and ensure to leave some room with the specified pulse current - they do not always perform as well as the data sheet may suggest! Please also take into consideration the current draw of any peripherals/sensors that you add to the device.

Suggested Batteries:

Alkaline: Panasonic LR14XW Industrial type

Lithium Thionyl Chloride: SAFT LSH14 - for extreme temperatures and high capacity, can be expensive

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