Energizer lithium vs. alkaline batteries
Some APRS beacon tests provide data directly comparing the energy performance of Energizer alkaline and lithium AA cells.
lithium
Wireless near-field sensor
Careful selection of quality probes joined with the Raspberry Pi offerings yields a wireless E and H field sensor for accurate antenna analysis.
Feedline eliminator test transmitter – first look
The Raspberry Pi Zero brings nearly off the shelf gear to the task of generating an RF test signal from a completely wireless, small, self powered device about the size of a D cell.
KX4O 1B-Battery VA Field Day 2015
Despite a weak battery and few contacts, our 1B-Battery effort verifies a 40m small-loop and packet-radio NTS messaging using quick deploy antennas.
LiFePO4 – The New Normal?
The Lithium Iron Phosphate battery chemistry is my replacement of choice for my old 7AH lead acid gel cells.