Eagle Battery Recommendations
Written by Matthew Clark-Massera
Updated at January 27th, 2023
Table of Contents
The Eagle has multiple power options:
- Line Power (4-16V input range)
- 4 x C cell Batteries - either:
- Alkaline
- 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 SpiralType 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:
| Device | Battery Type | Peak Current (approx, @3V per cell for LTCs and @1.5V for Alkaline) |
| Eagle 4G Cat-M1/Nb-IoT | LTC | 300mA |
| Eagle 4G Cat-M1/Nb-IoT | Alkaline | 650mA |
| Eagle 2G | LTC | 800mA |
| Eagle 2G | Alkaline | 1600mA |
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