Power inverter considerations
Friday March 1, 2013 07:42
28, 2013 15:54
Solar Charging Harbor Freight 12 V 35AH AGM battery. Audio
Core i3, 5, 7 power.
The PNM Prosperity Energy Storage Project features one of the
largest combinations of battery storage and photovoltaic energy, commonly
referred to as solar energy, in the nation.
Field trip to Affordable Solar Monday March 4, 2013.
Harbor Freight Portable Household Battery Solar Charger Item
#68690 oscilloscope and meters tests.
Unadvertised software features.
Z580 core i5 or 7 Windows 8 to XP?
|Tuesday May 28, 2013 15:54
|Tuesday May 28, 2013 15:33
80W, 200W, and 400W modified since wave inverters
purchased from Harbor freight caused me to investigate
Google 'modified sine wave inverter damage'.
any of these inverters damage any equipment sold by Harbor Freight?
so, which devices.
Please ack if you receive this
|Wednesday March 20, 2013 10:50
Solar charging the 12V 35Ah
is the eventual goal. Grid charge to be used for second charge
5 Hours discharge at between about 4.2 to 4.4A at between 13.3
Roughly 4.3 * 5 = 21.5Ah.
Discharge to half the Ah
battery rating, or 17.7Ah advised in instruction manual.
Exchanged Wednesday March 20,2013.
66814 or just our first unit?
Wednesday March 20, 2013 08:53
Hello Harbor Freight,
400W Inverter model 66814
purchased on Monday 3/18/13 may not be operating correctly.
1 No audible
beep when start switch depressed.
2 Voltage rose from about 120V to 127V
over a 5 hour period driving a nominal 40W load powered by a Harbor Freight 12V
35Ah AGM battery.
3 Battery voltage fell from about 13.3V to 11.88V at
time of disconnect.
4 66814 reconnected. Green LED lighted continuously
but red LED blinked. No power output.
Instruction manual does not
address this scenario.
5 Within a fell hour start switch depressed again
and 66816 started but without beep.
6 66814 appears to have failed under
warranty and is being returned for replacement.
7 Records of test is
Tuesday March 19, 2013 17:59
Video taken on field trip
to CFV solar test
laboratory Monday March 18, 2013.
Redo of the 40W
light bulb 80W inverter experiment using the 400W inverter.
Digital Electricity Usage Tester Chicago Electric -
item#65731 is seen plugged into inverter. Appears to work fine. And it
surely contains a microcontroller.
Kill-a-watt had a problem with modified sine wave
Efficiency of about 84% is computed from DC
Amps, Volts adn AC power from values in the videos.
4. Attach the red Cables Alligator Clip to the
Positive (red) terminal on the battery, then attach the black Cables
Alligator Clip to a clean unpainted metal part of the chassis. (Note: If
connecting to a battery not installed in a vehile, connect to the Negative
Rio Rancho Autozone employee reported that
they were taught to connect battery negative terminal first, then the
May be less 'shock' to electronics if ground [return]
National Security Agency Orange hardware/software design
specification mandated audio and visual indication in event of failure.
5. The red Fault LED will light up momentarily and the
alarm will sound as the Inverter draws power. Then the alarm and red LED will
turn off and the green Power LED of the Inverter will light
400 Watt Continuous/800 Watt Peak Power Inverter
400w pOwER iNVERTER. 66814. SET up aNd OpERaTiNg
Deep cycle (marine and RV) batteries can be charged
more times than a car battery, and are a better choice for repeated use of the
Power Inverter. Favorable evaluation of
the 80 W inverter prompted
Do not discharge your car battery more than 10% of its
total capacity, and deep cycle batteries more than a 50% discharged
[Battery it totally discharged at 10.5V, we read.
Freight 35Ah AGM battery shows about 13.3V fully charged.
Does this mean
(13.3 - 10.5)/2 =1.4V drop to be 50% discharged or 11.9V?]
If the alarm
sounds, this means that the input voltage is at or below 10.8V. The 1. battery
needs recharging. You should stop using the Power Inverter and recharge the
battery. If this is not done, the Inverter will shut off automatically at
If your television will not start, it is important to keep in
mind that some appliances 3. (including many televisions) may require two to
six times their wattage to start up.
Another free DVM. :)
Solar generated electricty will,
not can, produce over/under voltage conditions.
That's why the HQPR solar panel reguator was
Saturday March 9, 2013 07:56
charge about 40-50 mA, AARP Bulletin Harbor Freight ad video.
float charger power consumption.
7 * 24 * 365.25 = 61326 or 61.326
$.1071/ kWh in New Mexico.
$6.57 to run the float
charger continuously for one year.
Friday March 8, 2013 20:42
Inactivity can be extremely harmful to a battery. It is
a VERY poor idea to buy new batteries and "save" them for later. Either buy
them when you need them, or
keep them on a continual trickle charge.
Solar cycle won't work?
Float charger is drawing 6 W.
Voltage out is 13.03.
AGM battery is 13.30 V.
DVM set on 20 A
Which way is the current going to flow?
Will there be
Float charge AGM
battery test video.
Float charger impressive performance video.
Statement of 80 mA is
Minimum is 80 mA. Maximum is .08999999999 A or 9
AGM battery was fully charged on March 5, 2013. But then
let stand with only a free Harbor Freight voltmeter connected to it.
day Harbor Freight warranty. :)
Battery Float Charger, Automatic Cen-Tech - item#42292
output voltage measured 12.99 V.
AGM battery measuring 12.32 Thursday
March 7, 2013. Hmm?
Friday March 8, 2013.
Transformer output is
15 V @ 500 mA.
Battery dropping about 2-3 V/day.
Wednesday March 6,
Deep Cycle Battery FAQ.
Tuesday March 5,
Full battery green light on.
0 A out of charger. Battery at 13.48 V which what the
voltages was when purchased. But
continue to flow into charger.
Tommy Trujillo was phoned an message left.
rerturned call on our land line to confirm. And asked my last name.
Over and undervoltage is a concern
which must be studied.
The 66944 apparently checks for both. And has
the capability of running and 120 V AC pump? Problem solved?
80 W iverter and power meter loads.
Not low voltage out of inverter with 380 mA load.
W incandescent load.
set to 12 A deep cycle video.
Monday March 4, 2013 13:13
inverter connected to AGM battery.
Inverter draws about 220
mA with no load.
AC power meter reports 107 V output with only the power
meter which draws about 200 mA.
AGM connected to 80W inverter through
autoranging digital multimeter set on Amps.
Output of inverter connect
AC power meter which now reports 117 V output.
Note time again.
experiment video part 1.
experiment video part 2.
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