Jim,
Thanks for the information.
I use the Bioenne 9AH battery for portable operation.
I also use it to power the shack radios for receiving during power outages and
when checking a new source of RFI. One of the first steps I do is to power down
the house AC feed and any UPS devices when troubleshooting RFI to determine if
the source is internal or external to the house.
Mike N2MS
----- Original Message -----
From: Jim Brown <jim@audiosystemsgroup.com>
To: rfi@contesting.com
Sent: Fri, 12 Aug 2016 18:21:26 -0000 (UTC)
Subject: Re: [RFI] Solar Panel RFI
That's the cost of LiFePO4 chemistry, Ken. Bioenne's batteries include
the circuitry needed to balance the charge between the multiple cells
that make up the battery. Those from batteryspace.com, (good people,
good products) require add-ons to do that.
Offsetting that cost are three very important factors. 1) Ham
transceivers produce significantly less IMD (reduced key clicks) at
higher DC supply voltage -- they need to be close to 13.8V to be
cleaner. Terminal voltage of LiFePO4 chemistry stays above 13V for most
of its discharge curve, above 12.5V for the last 20%. Terminal voltage
of Lead acid is below 12V for more than half of its discharge curve.
2) LiFePO4 batteries are good for about 5X the charge/discharge cycles
of lead/acid batteries. That means they'll last 5X longer. I've had to
replace lead-acid batteries every few years because their capacity falls
off a lot.
3) LiFePO4 batteries have about 1/3 the weight and volume of lead-acid
batteries with the same Ah capacity.
73, Jim K9YC
On Fri,8/12/2016 11:10 AM, Kenneth G. Gordon wrote:
>> A 100Ah battery from Bioenne Power. Not cheap.
> At $862 each, and over $950 with their noisy charger, most certainly not.
>
> Sheesh...:-(
>
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