Lead-sulfate is created when a battery is discharged. Then,
when charged, in principle all lead-sulfate changes back to
its component materials --- lead, lead dioxide and sulfuric
acid. However, as batteries age, hard lead-sulfate
crystallizes on the surface of the electrode plates. This
non-conductive material films the surface of the electrode
plate causing a reduction in surface area needed for electrochemical
reaction of the battery. It also reduces the
batteries' component materials needed for the reaction.
Heavily sulfated batteries, which do not hold charges, are
often replaced prematurely and unnecessarily.
Nanopulser applies a weak but sharp electrical pulse that
inhibits the buildup of hard sulfates as well as gently dissolving
the sulfate coating without damaging the electrode plates.
With Nanopulser installed, batteries maintain a high level of
capacity and prolonged life as well.
Nanopulser applied to sulfated batteries:
We will install that Nanopulser permanently on H-Ion's string #1, battery #1, that was
resurrected last week.
The #1 battery was in a 48 volt string of four 98 A-Hr 12 volt deep-cycle sealed marine cells. These batteries were about 6
months old. After a power failure to the battery float charger, and droop under the 5 ampere continuous load, to about 9
volts on each 12 volt battery, the string #1 batteries were recharged individually by our 12 volt maintenance [2 to 6 ampere] battery charger. Only two of
the four 12 volt batteries in string #1 came back to life after charging [#2 and #3]. The other two [#1 and #4] would not charge; no current was measured
into either 12 volt battery, while charging with the maintenance battery charger for several days.
Then, I tried a constant voltage power supply on
battery #1 and raised the voltage to about 15 volts dc, with current limit set for protection. It would not charge, even with the higher applied voltage
over several days.
After I installed the Nanopulser, the evening that it arrived, I put the maintenance charger back on battery #1 and went to bed.
The next morning it was charging at 2 to 3 amperes! After about three days it was up to full charge and read 13.6 volts with the charger and Nanopulser
removed. After sitting on the bench for about a week, with the Nanopulser and charger removed, Battery #1 read 12.6 volts.
Next, I set up the other
bad 12 volt battery [#4] from string 1, by connecting it to the charger with the original Nanopulser PG 12N. At the start, the terminal voltage of the
battery was 6.5 volts. After applying the Nanopulser and charger, the voltage was set to about 13 volts and a small current of about 0.5 amperes was
measured [I left the current limit set to 1.5 amps]. Then I left battery #4 on charge for two days and then went back to check it. It was at 11.5 volts on
the terminals and the current was up to 1.5 amperes. After another day, I checked again, and the current was still about 1.5 amps and voltage was 11.9.
After two more days at 1.5 amps the voltage reached 12.3, and finally 12.6 after about two more days. This battery took longer than the first one, and got
warm to the touch, but eventually came back to full charge. The two batteries were re-installed in the string of 48 volts and put back on solar. The string
read 55 volts today while "on sun". So, we are back in service with both batteries.
H-Ion Solar Inc.
P.S. I just received two more
Nanopulsers for a client with a big 48 volt battery bank and some vehicle batteries, one is 12 volts [for the vehicle batteries] and one is 48 volts [for
the large solar electric energy storage system]. The big bank uses Yuasa Solar HUP 1 [I think they are 1200 AHrs in eight 12 volt steel cases, 4 in each
series string, and two strings of 4 in parallel]. I will soon see if the 48 volt Nanopulser will be effective on such a big battery.
The Yuasa solar energy batteries have suffered some abuse after being overcharged in wind
storms by a windmill source in parallel with the PVs, several times. This resulted in excessive
gassing of the acid electrolyte in the Yuasa batteries, to a level below the tops of the plates, and
some sulfation of the upper portion of the plates, which has in turn resulted in loss of storage
For the past four years I have displayed inverter
chargers in my booth at the Seattle Boat Show. We needed a battery to run the display and chose a
agm battery that was deemed no longer serviceable. A battery with a short discharge and charge capacity is just fine for showing the inverter
charger's ability to cycle. The battery sits in disuse except for this annual show. For the first three years we were able to coax this battery back to
the point it would accept a charge and also run in the invert mode for a reasonable period of time. This year was a different experience and the battery
would discharge to 10.25 volts with a small load in only 30 minutes. In the charge cycle it would skip the bulk cycle and go directly into the absorb
After installing the Nanopulser for 24 hours the battery responded and would go through a full charge cycle and would discharge over an hour
and a half. All this from a battery that had been destined for the "bone pile" four years ago. I'm fairly certain that I will have that battery back in
my booth for the 2008 Seattle Boat Show.
I wanted to give you feedback regarding the Nanopulser.
I prefer to test new products on my own vessel and we cruise most of the summer on our 42' sailboat. It's equipped with 6 five-year-old 105 golf cart batteries for a house bank and a 150 amp alternator that uses a heavy duty Transpo regulator but charges like a stock regulator. In March of this year I put a Nanopulser on our main battery bank and let it work its magic. The difference I found in our charging routine between the last two years and this year is this: In the past, while sitting at anchor, running lighting and refrigeration and stereo, we would need approximately 30 minutes of charging time, using the alternator in the morning and 30 minutes in the evening to satisfy our charging needs. This year, with the Nanopulser in place, instead of 12 hour cycles for charging, we're doing approximately 17 to 18 hour cycles between charges. This confirms my suspicions regarding some of the earlier tests that we've done on battery banks after a Nanopulser was installed and I thought you'd be happy to hear this news. I am recommending this product to my customers.
Whale Back Marine Systems