How Long Can I POTA on My Battery??

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So you're gonna operate portable. Cool! Now you need to figure out how much battery you might need to operate for the day. The short answer is "It Depends" (doesn't it always???).
Let's take a look at some battery parameters, how LifePO4 batteries are rated, and what we can possible expect for operating life in the field.
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Miady 36AH LifePO4 Battery - amzn.to/3wGZkJa
Powerworx Inline Power Meter - amzn.to/44FTFzQ
JZCreator Inline Power Meter - amzn.to/3wA0pm3
Makerfire Inline Power Meter - amzn.to/3UXq6qc
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Опубликовано:

18 июн 2024

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Комментарии : 15

@AndyAAzeroAM Месяц назад

Well, data is all fine and good.. Time to go test the theory :)

@KS0JD Месяц назад

It would be nice to have a monitor that would keep track of the power used and store it so you could have a total consumption of power over time so you know when to charge the battery. The batteries BMS probably has that but in many cases you cannot get access to that data. Thanks for the video Jim!

@FEPLabsRadio 9 дней назад

Yeah - some charge controllers have that capability, and I *think* I might have seen some batteries that have an app - but it ain't common. One of those inline meters is the best alternative.

@temporarilyoffline 28 дней назад

Juice!

@LeeMcc_KI5YPR Месяц назад

So, Jim, how did you acquire this expertise in POTA battery life? 🤔 😂

@FEPLabsRadio 9 дней назад

None in POTA, batteries are batteries. :P Y'all need to give Ape some crap about POTA - it ain't like he's ever been either.

@robertmeyer4744 Месяц назад

nice job ! hard to do math ! so many things with TX amps from radio. your settings makes a difference on power draw and your talking style . with CW your speed has a lot to do with power draw . just get a inline meter . better ones are bi- directional and can take account for solar as well. 73's

@FEPLabsRadio 9 дней назад

Yep - inline meter is absolutely the way to go!

@The1Ramsey3 Месяц назад

The meter is definitely the way to go with tracking power consumption. The math on draw vs amp hour isn't quite right. The amp hour rating isn't linear in relation to current x time at all current draw rates. The battery will become far less efficient as larger amounts of current are consumed.

@FEPLabsRadio 9 дней назад

The battery will die faster as large amounts of current is consumed, sure. It's a SWAG for figuring out what battery you might want to take with you. There are other factors involved, but most hams are good with back of the napkin math.

@45auto Месяц назад

I have a similar meter in my Amazon shopping list.

@Frank_K4FMH Месяц назад

Kevin Loughlin Old Ham Tech just did a nice video on this model of meter (may be branded differently).

@45auto Месяц назад

@Frank_K4FMH I saw that one. His is rated for 100A, whereas others are rated for 150A, 200A, etc. I hadn't noticed until someone pointed it out to me. Just something to consider.

@Frank_K4FMH Месяц назад

Indeed! They vary quite a bit. I have more than a dozen of these inline wattmeters, ranging upwards of 200A. I routinely out them in battery boxes I build. Kevin’s YT video was a variant of the one Jim illustrates here. 73 de K4FMH

@FEPLabsRadio 9 дней назад

Those things are legion on Amazon. I have had several "models" and like you mention, the current rating varies as well.