-----Original Message-----
From: FT817@... <FT817@...>
Sent: Tuesday, April 16, 2019 10:02 AM
To: FT817@...
Subject: Re: [FT817] battery pack
I like the Bioenno batteries, I think their prices are on the high-end of
reasonable, but my 20 amp battery works great.
To size the battery, you need to know how you are going to use the radio and
how long you want to use it. For example, let's say the radio uses 3 amps
transmitting, 1 amp receiving. A use case of 50% transmitting, 50% receiving
would put you at 2 amp/hr usage.*
Now that you know consumption, you need to multiply that average times the
number of hours you want to operate between charges. Let's say 7-8 hours -
that's a lot of operating between charges. So that points to a 15 amp
battery to give you 7-8 hours usage between charges. You could step down to
a 12 amp battery if you add a modest solar charger to the mix as Joseph
described.
I hope that helps,
Ken, N2VIP
* my power consumption numbers are NOT FT-817/818 numbers, they are made up
for simple math.
On Apr 16, 2019, at 12:50 AM, Joseph Wonoski N1KHB@... [FT817]
<FT817@...> wrote:
Personally, for operations where I am not backpacking, I have a 25 w solar
panel and a 12v 12A SLAB to power my FT-817, for Field Day like ops.
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Posted by: Ken Hansen <ken@...>
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And for a great FAQ ( Frequently Asked Questions ) see
Some really good technical info at: .
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