Battery Charging
AA, AAA, 9V NiCd and NiMH+
NiCd 18 V and maybe 12 V lead acid and Li-Ion?
Solar, fossil fuel and nuclear

First posted
Saturday December 15, 2012 08:48
Monday May 13, 2013 15:55

Team Observes Real-Time Charging of a Lithium-Air Battery.

Oscillisoscope and meter tests of the Harbor Freight Harbor Freight Portable Household Battery Solar Charger, Wednesday March 6, 2013.

Friday February 15, 2013 14:21
"If Congress won't act soon to protect future generations, I will," President Obama said.

Battery charging video 1.
Battery charging video 2.
Battery charging video 3. Incorrect statement. Should be 25 mA for 9 V. 4 mA is for 1.5 V AA or AAA.
Battery charging video 4.

Urban Survival Friday February 15, 2013.
Hobby Corner III, Solar Power

As soon as I get back - and put in an outside power disconnect - the local power company will sign off on our solar power system. I didn't know I needed to have a separate outside visible disconnect, but that's how they read the rules and it's their grid we tie to....

PNM requires too.

Solar lab Wednesday February 13, 2013

Skin cancer, solar, visibility, and recovery of our stolen $22,036 are related.

Suraj G Reddy.

Argo Trailer.

23o F solar charger in dim illumination video.

Large-scale solar advocates might try to discredit made with free Harbor Freight digital multimeters.

100 k Ohm resistor mesurement video.

Measurement from the two multimeter look to be within specs.

Greater than One Sun video?

Sundance calibrated solar cell is rated to output .58 V and 268 mA at One Sun.

Minimum mA is 280.00000... max 289.99999 = 290.

280/268 = 1.045. 290/256 = 1.082. Yup. More than One Sun. :)

Mr Bill Felsher of Affordable Solar told bill that in New Mexico more than One Sun irradiance is possible. At that time bill was skeptical.

Mr Chazdon asked whether he knew Mr Felsher.

Response was that he did not. But he had only been with Affordable Solar for a little over a year.

Tuesday February 12, 2013

9 V 2200 mAh NiMH is really dead.

Solar charger will try to charge it while voltage and current are monitored.






Calibrated solar cell, free meter 40, and expensive [about$16] blown of work table Friday afternoon February 8, 2013.

Meter 40 broke


Cause failure discovered video.

Meter 40 may have failed under warranty? Yup. Seven days until warranty expired.

Bought nitrile gloves and recevied replacement meter:)

Discharge progress video.

Saturday February 9, 2013 07:26

Harbor Freight technology makes this battery charging investigation possible.

But beware of problem. 'China consumes nearly as much coal as the rest of the world combined'. 

9 V and 1.2 V AA, AA discharge video.

Bad solar day video

Friday February 8, 2013 06:51

Solar battery charging experiments equipment.

Replacement for broken 9 V NiMH.

Fast charging possible with solar?

20% off coupon used along with free 9 white LED 3 AAA battery flashlight! :)

9 V 200 mAh Thundderbolt Magnum batter connected.

Meters test for charged batteries.

26.1 mA read at end of scans since testing discharges battery.

Meters are accurate for Volts and Ohms meaurements but do not work well of Amps.

Thursday February 7, 2013 09:42

Is below true?
The short-circuit current is the current through the solar cell when the voltage across the solar cell is zero (i.e., when the solar cell is short circuited). Usually written as ISC, the short-circuit current is shown on the IV curve below.

Affordable solar field trip.

to ask question about solar panel short circuit voltages.

Part 1 audio with Justin Dewey.

Part 2.

Microinverter display.

4,340 * .04 = $173.60 min 4,350 = $174 max earned from electricity sale :(

How much does 9 panel system cost?

Solar Energy Incentive Program: REC Prices


Solar lab.

5 Watt Harbor Freight panel on concrete.

Pacific Hydrostar on wall.

Sundance calibrated solar panel on worktable.

Sun Mexico sun 02/06/2013.

Skin cancer capitol of the US is Albuquerque, New Mexico

Sundance calibrated solar panel measures .58 V open circuit and 268 mA at one sun.

270 mA measured is greater than One Sun!

Voltage AND current are measured both open circuit and shorted through digital multimeter.

20 Amp setting, not 200 mA, required for all meters.

Calibrated solar cell video.

5 Watt Harbor Freight solar panel video.

Pacific Hydrostar beat-up solar panel video.

Canon PowerShot SX160 iS digital camera used for video.

New Mexico Solar Deal Details Point to Parity -- and Pain.

Not Business But Personal: Nuclear Energy.

9 V plus-side connector separated from 200 mAh NiMH Harbor Freight rechargeable on Tuesday February 5, 2013.

Unable to remove connector from blue flexible connector.

Black connector from dead multimeter [battery plugged in backwards] will replace blue connector.

Note difference in circuits. Mulimeter on right is model 98025 while left is 90899.

What is is purpose of the spring on the 90899 which is missing from the 98028?

Repair complete.

Super glue gel used for insulation. Hope its a dielectric. :)

Works again, at least.

Super glue gel insulation solution may still have problems. But later.

More important issue to deal with. Recovery of $22,036 stolen by the liberal arts 'educated'.

Tueday January 29, 2013 07:56

Solar cell voltages may need regulation.

Over voltage can damage batteries and motors.

Undervoltage is not good for motors.

Let's investigate.

Digital Designer’s Guide to Linear Voltage Regulators and Thermal Management

(3) can be computed with a digital multimeter set on amps and a second voltmeter set on volts.


Sunday January 27, 2013 11:03

Fully charged NiCd results in green light video, Friday January25, 2013.

$15.99 Harbor Freight ammeter used.

AA 2,000 mAh NiMH solar charging with calibrated solar panel video.

Tuesday January 22, 2013

Above description differs from what we see.

No battery connected, red and green LEDs alternately flash.

Battery connected, red LED flashes, green off.

Solar charging vid 3 Tuesday January 22, 2013

vid 4

vid 5

Monday January 21, 2013

Solar charging vid 1 Monday January 21, 2013 17:39

Solar charging vid 2 Monday January 21, 2013 17:39

Battery charging using solar, grid, and maybe wind is focus of these pages.

Overcharging battery and charge controllers is a topic we all need to learn about.

Tracphone LG 430G delivers message 'Battery full' and a message to disconnect charger to save electricity.

Fast Neutron sounded an altenergy alarm.

Solar generation of electricity experiment lead to our observations of solar light battery charging.

Solar electric, with no battery, water pumping stimules our interest in effects of over- and under-voltage effects on electric motors.

No BS is goal of these pages.

Liberal arts 'educated' energy parasites require proper exposure.

Energy parasite sit in offices. Laboratory work is unknown to them.

Then they attend meetings where their mouths are open.

Maybe some will write nonsensical documents.

MilliAmp Hour means how much current a battery will discharge over a period of one hour. Higher numbers here reflect a long battery runtime and or higher storage capacity . Higher MAH ratings do not necessarily reflect on speed but more on runtime. For example a 2000 mAh pack will sustain a 2000 milli amp (2 amp) draw for one hour before dropping to a voltage level that is considered discharged.

Devices designed to use "9V" batteries are generally designed to work properly over the operating voltage range of a "9V" battery, from fully charged (typically up to 9.6 V) to nearly dead (typically 5.0 V).

Monday January 21, 2013 10:51

9V solar battery charging video and calibrated solar cell. Monday January 21, 2013 15:41

Time required for Solar battery charging is a function of the solar panel area and other conditions.

charge time in error?

Testing begins with 9V for reason that test connecters is easiest.

Measurement include voltage, current, time and approximate Sun measured with calibrated solar panel recorded with Canon PowerShot SX160 iS digital camera.

Monday December 17, 2012 07:19

Solar Copper LED Path Lights
China's government says it will encourage mergers among producers of solar panels to strengthen an industry that has suffered huge losses due to excess production capacity and price-cutting wars. 12/19/2012

contain a AAA battery rated at 600 mAh.

This is astounding for the reason that Harbor Freight NiCad AAA Item #47439 are reated at only 350 mAh.

Harbor Freight Item #47440 AA NiCad are rated at 700 mAh.

Charging, and not over charging, AAA, AA and 9 V is a subject of interest. Both solar and 120 chargers.

Over- and under-voltage effects on solar powered water pump motors is also a subject of interest.

Twenty-six solar battery charging AA, AA,A, and 9 V systems are in possession. One 120 V charger too.

Three Harbor Freight HydroStat solar water pumping systems are in possion. Failed motor to be examined to determine possible cause of failure.

Tools to study subject are in possession.

Free Harbor Freight Model 69069

69096 Operating instructions.

Auto-range and manual meeter for fairly accurate current measurement is possession too.

Writing skills hopefully in possession too.

Shahab Mozaffari lives in Tehran.

Sahar Mehrroz lives in Isfahan.

Katayoon Mazhari lives in Kermanshah.

Large-scale ectrictricy possible scams, perhaps such a Electric Vehicles, and associated super batteries subject should be addressed too. :)

Preparation for charging AND discharging lab required building breakout AAA, AA and 9 V systems.

9 V breakout connector is in charger.

AA single battery holder is to the left.

AAA double battery holder is to the left of the AAA holder.

Batteries for discharge/charge testing.

T44 pins soldered to wires for grip by test leads.

9 V no load charging voltage is 15.75 V.

Harbor Freight Solar Copper LED Path Light #10 did not appear to be working so it was disassemnled.

600 mAh battery used in solar light.Wow!

350 mAh is standard NiCd sold be Harbor Freight.

Battery #10 tested good with multimeter.

Battery reinserted and solar cell covered

item #66249 appears to use the solar cell to detect dark instead of a photoresistor.

Examination of early model 98025 with soldered-in fuse free digital multimeter begins on Sunday afternoon December 16, 2012..

with # 2 with soldered-in fuse.

No voltage applied to 20V range inputs in above.

External 200 mAh conected inputs using 9V PAKKO battery removed from destroyed multimeter.

Destruction resulted from reversing battery power and ground. :(

Charging breakout used initially. Whoops. +V on large connector when charging.

Discharge breakout built with +V on small connector seen working below.

First lab experiment Sunday December 16, 2012

CEN-TECH 98025 NiMH 200 mAh power consumption page.

Separate page for each discharing/charging experiment.

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