Category Archives: Alternative Power

Second Charge Doesn’t Fix Zippy – Capacity 77%/3.2 AH

A second charge cycle didn’t have much of an impact on the Zippy battery.  It showed a capacity of 76.7%, which is still considered failing (< 80% of rated capacity).  I carefully monitored the charge process, and couldn’t help but … Continue reading

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Zippy Charge #1 After 18 Month Storage – 3 AH (73%)

After testing the remaining capacity following 18 months of storage, The Zippy battery was recharged, remained idle overnight, then retested under a 2.1 Amp load.  The capacity was up to 72.5% (3.0 AH), which is considered “failed” (less than 80% … Continue reading

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Zippy Battery Capacity Test After Eighteen Months of Storage

I had an opportunity to let my 4.2 AH Zippy battery sit unused after I last charged it on February 26 of 2013 — that was eighteen months ago. I had noted in earlier testing that the Zippy self-discharge seemed to … Continue reading

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Capacity Test Results for Bioenno 30AH 12V LiFePO4

I finally had a chance to run a test on my Bioenno Power FL4S10PHCC 30 AH, 12 V, LiFePO4 battery this weekend.  I would normally do my testing at a C/2 rate, or 15 Amps in this case, but that exceeds … Continue reading

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Update on 3 Year Old LiFePO4 Battery

Executive summary – Even a properly maintained (periodically charged) LiFePO4 battery should be undergo a charge/discharge/charge cycle to maximize performance after long periods of idle time. I’ve had a few entries concerning my original LiFePO4 battery, a 9.6AH  K2-Energy pack … Continue reading

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Update on 60AH LiFePO4 Battery

About a year ago, I assembled a 60 AH 12V LiFePO4 battery to run the GOTA station during field day.  The battery was stored fully charged after field day then recharged on December 14.  I just took it out of storage … Continue reading

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Astron RS-35M “Phantom Power”

I had just uncovered (literally) my current adapter for my Fluke meter (a female to male cord with banana plugs in the hot lead), and decided to check to see how much power my Astron RS-35M linear power supply was … Continue reading

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Some Field Day 2013 thoughts…

Our W1LY Field Day was much nicer this year due to better weather.  It was warm and breezy but not to hot and humid until Sunday — when the humidity picked up along with the temperature.  Still, it was MUCH … Continue reading

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Satellite RX Offsets for AO-07, VO-52, and FO-29

Field day for NCRC is right around the corner, and its a busy one for me.  I’m responsible for the GOTA station, am acting as the Public Information Officer, and am setting up the 2m SSB and Linear Satellite station. … Continue reading

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An AC Charger for the 60 AH Battery

After shopping around a bit, I decided to use a Tenergy 10 Amp Charger for 4S LiFePO4 batteries.  The charger output cable is a pair of alligator clips just begging to be shorted out, and I wanted to replace them with Power … Continue reading

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