/ CHARGING RATE

[Oasisbob]

I currently charge my twin group 27 deep cycles with a six amp manual charger via HONDA EU 1000. With the six amp charger hooked up am I charging both batteries at 6 amps or 3 amp each? I want a fast charge to minimize generator time. What amp charger would you recomend? Thanks guys

[NinerBikes]

pnichols wrote:
I checked out the link posted earlier in this thread on MegaWatt single voltage/stage power supplies.

Their reviews from this ham radio site seem to range from mixed to outstanding, but maybe I'm misreading some of the comments:

http://www.eham.net/reviews/detail/9398

I'd probably opt for this outstanding little multi-stage battery charging power supply instead, from Mean Well, with (passive) Power Factor Correction for only a few $$ more. This little jewel would do well with our 200 AH AGM battery bank even powered by our itty-bitty quiet EX650 Honda generator - be sure to read it's .pdf Data Sheet:

http://www.trcelectronics.com/View/Mean-Well/PB-360P-12.shtml

I don't think my batteries will suffer from birdies at the 7 meter bandwidth... maybe a bit of a problem for a ham radio, not a problem as a power source for a battery, or for recharging.

[pnichols]

I checked out the link posted earlier in this thread on MegaWatt single voltage/stage power supplies.

Their reviews from this ham radio site seem to range from mixed to outstanding, but maybe I'm misreading some of the comments:

http://www.eham.net/reviews/detail/9398

I'd probably opt for this outstanding little multi-stage battery charging power supply instead, from Mean Well, with (passive) Power Factor Correction for only a few $$ more. This little jewel would do well with our 200 AH AGM battery bank even powered by our itty-bitty quiet EX650 Honda generator - be sure to read it's .pdf Data Sheet:

http://www.trcelectronics.com/View/Mean-Well/PB-360P-12.shtml

[NinerBikes]

mena661 wrote:

NinerBikes wrote:

BTW, how about posting up your battery collection that needs recharging and specs of the batteries. Kind of need to know the total AH of the complete battery bank set.

Thanks. It's in my signature. Go up to my last post and click the Trojan link.

If your battery acceptance is low, the unit will provide less amps, at the same voltage, what ever you set it at.

[mena661]

NinerBikes wrote:

BTW, how about posting up your battery collection that needs recharging and specs of the batteries. Kind of need to know the total AH of the complete battery bank set.

Thanks. It's in my signature. Go up to my last post and click the Trojan link.

[NinerBikes]

mena661 wrote:

NinerBikes wrote:
Schottky diode options.

I think I might just buy one for now. I can always add more later. What I'd really like to do is remove the converter and just use a couple of these units instead. What I don't know is how much current these will put out when battery acceptance is low. Have you ever hooked yours up when your batteries are full?

Of course I have, the amps get dialed back... you can't push amps when the chemical reaction of the battery is a limiting factor. When there's no chemical reaction to take place, as in charging, the amps drop way off.

Try it.
BTW, how about posting up your battery collection that needs recharging and specs of the batteries. Kind of need to know the total AH of the complete battery bank set.

[mena661]

NinerBikes wrote:
Schottky diode options.

I think I might just buy one for now. I can always add more later. What I'd really like to do is remove the converter and just use a couple of these units instead. What I don't know is how much current these will put out when battery acceptance is low. Have you ever hooked yours up when your batteries are full?

[NinerBikes]

duplicate

[NinerBikes]

duplicate

[NinerBikes]

Schottky diode options.

[mena661]

Thanks much Niner! Got it! I saw the other thread but did not understand his explanation of what was needed.

[NinerBikes]

mena661 wrote:

MEXICOWANDERER wrote:

You connect one POSITIVE wire from ONE power supply to each of the towers on this rectifier. The holes in the towers are threaded. Yes the base plate then becomes "hot" +

School is in session!! 🙂 Let me make sure I understand this. You have two towers on that rectifier. If one has two power supplies, then you would connect the positive from each power supply to a tower on the rectifier??? So you would have one power supply positive lead per tower???

One 30 Amp or 36 amp power supply, both tweaked to the exact same voltage output, to one tower. What is underneath, the base, is now rectified, one way voltage, at the combined amperage of the two power supplies. You now tie in your 2/0 gauge wire to the base, to run to a big A$$ fuse, and off to the batteries Positive posts.


MegaWatt power supply 33amp 36 amp and giagantor amp.

To be fair... Mex did post this up in another thread, I did have to grill him a little bit via PM's, because my electrical savvy on power sources converted to dry camping hard core boondocking "get 'er done, save the time, save the gas, battery life being shortened maybe 5%, probably a hell of a lot less" on a couple of free T-1275's was not going to make my wallet wince one bit. I had a Honda EU1000i and a couple of Eu2000I's to run the 13.5k A/C, so all my bases were covered. Keep in mind, I camp pretty much solo currently, and my tiny 21 foot travel trailer can't really suck too much juice in 24 hours... 50 amp hour days would probably be pushing it.

Anyways, after enough cattle prodding by Mex, I guinea pigged out and bought one. And I am here to tell you, this is one mean little kick arse dry camping boondocking fast as heck battery charger, when I set mine at 14.8V. I'll have no problem, in most days, running this thing at the most, 30 minutes to an hour, tops, first thing in the morning, and let the 120 Watts of portable panel finish with all the easy work, now that the generator has done the hard part, after a couple of cloudy or rainy days.

Within reason... for my app, it is a straight out bulk charger... I have the solar panel for finish charging. I will run mine short and sweet. It will pull 8.1 amps, or try, on that little Honda Eu1000i, at the start, and the T-1275 will take it all, no problem.

The average nerd would be better off setting this thing on a timer.

I have run mine in measured 104F heat, and it does not get hot, and it maintains it's power source profile. You might need to tweak your voltage down accordingly for the heat, perhaps a 1/10th of a volt or more? Ask Mex.

To my way of thinking... a device like this makes a Trojan T-1275 and it's problematic equalizing, or a group 31, 29, or 27 a lot less problematic. I just don't know if this unit will actually make 16.0V for equalization of cells purposes, and it might be too heavy handed on the amps to attempt it. I haven't tried it yet, and I have an old manual 6 amp Sears charger that will give me 16.0V, at a safe amp level.

[mena661]

MEXICOWANDERER wrote:

You connect one POSITIVE wire from ONE power supply to each of the towers on this rectifier. The holes in the towers are threaded. Yes the base plate then becomes "hot" +

School is in session!! 🙂 Let me make sure I understand this. You have two towers on that rectifier. If one has two power supplies, then you would connect the positive from each power supply to a tower on the rectifier??? So you would have one power supply positive lead per tower???

[NinerBikes]

MEXICOWANDERER wrote:
Eeny-Meeny-Chili-Beany

The Spirits Are About To Speak




eBay

Search

300 ampere 45 volt power rectifier

The one you want comes from Canada

STOP! LISTEN! LEARN!

Yes each rectifier is ten times the value of the 30 amp power supply.

The rectifier is SHOTTKY. And at that low an amperage the voltage DROP across this device is .21 volt, not .75 or greater as with a silicon device. This critter is CHEAP.

You connect one POSITIVE wire from ONE power supply to each of the towers on this rectifier. The holes in the towers are threaded. Yes the base plate then becomes "hot" +

You can find someplace to mount this in your RV can't you? It should be clamped to a four inch long heat sink. Two of the SHOTTKY rectifiers will support FOUR power supplies in style. That's over 130 amperes in charging power. And you set precisely the voltage of EACH power supply BEFORE connecting it to anything. A standard DMM will work fine for doing this.

You could be nice, click on the earth with a chainlink icon, and copy and paste that Ebay url in there for us, MexicoWanderer.

[MEXICOWANDERER]

Eeny-Meeny-Chili-Beany

The Spirits Are About To Speak




eBay

Search

300 ampere 45 volt power rectifier

The one you want comes from Canada

STOP! LISTEN! LEARN!

Yes each rectifier is ten times the value of the 30 amp power supply.

The rectifier is SHOTTKY. And at that low an amperage the voltage DROP across this device is .21 volt, not .75 or greater as with a silicon device. This critter is CHEAP.

You connect one POSITIVE wire from ONE power supply to each of the towers on this rectifier. The holes in the towers are threaded. Yes the base plate then becomes "hot" +

You can find someplace to mount this in your RV can't you? It should be clamped to a four inch long heat sink. Two of the SHOTTKY rectifiers will support FOUR power supplies in style. That's over 130 amperes in charging power. And you set precisely the voltage of EACH power supply BEFORE connecting it to anything. A standard DMM will work fine for doing this.