Have they actually provided you with a full datasheet including lifespan
study data or at least projections?
Personally I refuse to purchase any reserve power battery without a full
datasheet including cycle life.
Saying 5x the charge/discharge cycles is shiny, but where is the data?
Compared to what a Costo RV battery or a _real deep cycle_?
A generic RV/Marine deepcycle may be useless after < 50 80% DOD cycles,
a better grade trolling 300ish, proper industrial types at least 600.
IIRC the Concord/Lifeline AGMs are rated at 1200 80% DOD cycles.
They are hell to get in AK due to freight, but a single Concord/Lifeline
D31 size while ~ 70lbs is 105ah, rated for 1200 80% DOD cycles (and IIRC
this rating is to 20% capacity loss) and is perfectly happy bulk
charging at 110amps...
Don't mean to rant, but I have a real sore point with battery
makers/sellers that don't publish datasheets yet make /interesting/
claims about life and capacity. Had a big fight with Batt+ just last
year about their attempt to substitute Oddesy batts for Concord,
claiming they were equiv...Not a bad battery, infact pretty good for a
starting/deepcycle, but after fighting to get the datasheet..600 cycle
rating, they are starting/reserve NOT industrial deepcycle.
On 8/12/16 10:21, Jim Brown wrote:
> 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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