Battery Info

[Too many Kubotas]

yea that seems pretty off to me. I have never seen that, especially the ability to see it bounce like that. normal meters can't see pulse's. is this the one amp model?

It wasn't a high frequency fluctuation by a long shot, rather about 1.5 to 2 second "waves". Being used to high frequency desulfation but not the high voltage version it was a complete surprise to me.

Noticed it when checking if the little NOCO 1914 was doing anything, and will check again in a little bit. Pretty sure that's a 1-Amp version. It didn't come with any instructions.

I'm guessing it wasn't the battery he was concerned about (not many have built in electronics, though it is becoming more common in some of the newer designs). It would be whatever electronics are in the vehicle if the battery is not disconnected before charging.

In this case it's a Honda generator, from the '80s I think, so I didn't bother disconnecting the battery. Actually, probably wouldn't have anyway since I have never seen that kind of behavior from a battery maintainer.

 

[LittleBill21]

It wasn't a high frequency fluctuation by a long shot, rather about 1.5 to 2 second "waves". Being used to high frequency desulfation but not the high voltage version it was a complete surprise to me.

Noticed it when checking if the little NOCO 1914 was doing anything, and will check again in a little bit. Pretty sure that's a 1-Amp version. It didn't come with any instructions.

In this case it's a Honda generator, from the '80s I think, so I didn't bother disconnecting the battery. Actually, probably wouldn't have anyway since I have never seen that kind of behavior from a battery maintainer.

I don't know what a 1914 is. the 1 amp is called genius 1, instructions are underneath the cables.

you definitely have something weird going on. 18+v is wrong. If I get my truck fixed today, I may hook up the genius 1 to an oscilloscope and see the range, it really shouldn't be over 15v.

 

[Too many Kubotas]

Yes, it's a Genius 1, says 1914 on the box, and there were no instructions. Found them by typing "noco 1914" into Google.

It's typical for me it seems, and the new welder didn't come with instructions, either. Well, they're on a thumb drive that was included, but that's not overly practical for the application.

 

[LittleBill21]

oh, I see it now, yea thats the year the company was founded. has nothing to do with the model of charger

 

[Too many Kubotas]

Checked the well aged Predator battery, and (not surprisingly) the NOCO had quit and showed "Bad battery", just like it did with the formerly good battery. Well, this time it was at least correct.

Started it again and checked the voltage. Now it fluctuated between 7.80 (about what the battery was at before) and 19.44 V.

Meanwhile the two BatteryMINDers that were hooked up on the four battery setup yesterday evening are just doing their thing. Also not surprisingly.

 

[LittleBill21]

isn't your 4 battery having some kind of issue as well? isn't that other post and now you desulfators running trying to recover.

i will put mine on the scope. I have never seen voltages anywhere near that with any noco.

 

[LittleBill21]

So I threw this on an oscilloscope, on a battery that is bad. (4.76v) I am seeing a 18.9v pulse exactly 1 second in duration with mv amperage.

what this means.

The battery is bad. the noco attempts to pulse amperage into it, it doesn't take the amperage because its bad, unless the voltage climbs over 18v, where I assume it can finally break the resistance.

The issue I have is I don't have a good loose battery. I expect these pulses to be much lower with a battery that can take a charge.

The HF units I used did no testing of any kind they just dumped 13.2 out whether the battery took it or not.

I think the noco is actually testing whether the battery is taking amperage.

I have taken multiple batteries off the tender at 13.2 and they are totally useless, drops to 9v over a 1amp charge.

I need to find another battery to test against.

 

[Too many Kubotas]

isn't your 4 battery having some kind of issue as well? isn't that other post and now you desulfators running trying to recover.

Yeah, I'm feeding the two "end" batteries gently, with low amp maintainers. It's not really for the desulfation, but I have very few maintainers without that feature, and it can't hurt anything.

 

[Too many Kubotas]

The HF units I used did no testing of any kind they just dumped 13.2 out whether the battery took it or not.

Whoa! Whoda thunk the Harbor Freight ones aren't the best technology possible?!?

Well, I strongly suspected that they aren't good maintainers, but didn't expect them to be simple power supplies.

 

[LittleBill21]

Whoa! Whoda thunk the Harbor Freight ones aren't the best technology possible?!?

Well, I strongly suspected that they aren't good maintainers, but didn't expect them to be simple power supplies.

thats what 99% of them are.

they are nothing more then a ac/dc transformer to a buck converter.

these noco's and everything else all they are doing is using a computer to PWM a higher voltage to "hopefully" break up the sulfication on the plates.

there is no magic here. you need to actually load a battery to keep it healthy, adding load cycler would cost to much.

In my commercial job. those batteries actually load themselves to shut off and recharge (multiple redundant batteries in system ) to find out when they are actually bad.

I have seen people bring batteries back by boiling them, after rolling them down a hill to shake up the acid mixture.