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#21
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maybe its the alzheimer's kicking in. AC with DC offset
Loren Eggert BS CompE Purdue University |
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#22
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"Loren Eggert" > wrote in message ... > maybe its the alzheimer's kicking in. AC with DC offset > Loren Eggert > BS CompE Purdue University Unfortunately, I used that terminology also. AC impressed on DC is just adds a ripple to the DC, right? Some battery chargers used half wave rectifiers, others full wave, but there was no need to filter the ripple for battery charging applications. If one allows a little leakage during the cutoff cycle of a halfwave rectifier, then the effect is to have a greatly displaced alternating current, but one which may be largely in one direction. For example, you could have 99.9% of the current flowing in one direction and 0.1% in the other direction. Not 'pure' direct current, but approaching it on a practical basis. This supposedly helped prevent polarization at the electrode surfaces and improved the charge. Am I completely off base? |
#23
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sorry guys to butt in, but i am still confused with the original
question./ Should I charge my battery slowly at 2amp over several long hours.. or charge it fast at 10amp or 15amp? On Tue, 03 May 2005 10:13:35 -0500, Steve > wrote: >Mike Romain wrote: > >> First off, you should post the type of battery. Marine 'gel' cells are >> really rare. Lead acid spiral cells like Optima are much more common. > > >Ouch, that one hurt my brain too! :-p |
#24
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What brand of battery is it?
Some 'gel' batteries will die very quickly if charged too fast. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's rutman wrote: > > sorry guys to butt in, but i am still confused with the original > question./ > > Should I charge my battery slowly at 2amp over several long hours.. or > charge it fast at 10amp or 15amp? > > On Tue, 03 May 2005 10:13:35 -0500, Steve > wrote: > > >Mike Romain wrote: > > > >> First off, you should post the type of battery. Marine 'gel' cells are > >> really rare. Lead acid spiral cells like Optima are much more common. > > > > > >Ouch, that one hurt my brain too! :-p |
#25
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Hi thanks for the reply
its a deep cycle Gel battery. made by Napa Auto parts the only number i see stamped on the battery that might resemble a model number is " TYPE AGU1" On Thu, 05 May 2005 11:02:50 -0400, Mike Romain > wrote: >What brand of battery is it? > >Some 'gel' batteries will die very quickly if charged too fast. > >Mike >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 >88 Cherokee 235 BFG AT's > >rutman wrote: >> >> sorry guys to butt in, but i am still confused with the original >> question./ >> >> Should I charge my battery slowly at 2amp over several long hours.. or >> charge it fast at 10amp or 15amp? >> >> On Tue, 03 May 2005 10:13:35 -0500, Steve > wrote: >> >> >Mike Romain wrote: >> > >> >> First off, you should post the type of battery. Marine 'gel' cells are >> >> really rare. Lead acid spiral cells like Optima are much more common. >> > >> > >> >Ouch, that one hurt my brain too! :-p |
#26
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On Thu, 05 May 2005 16:19:39 GMT, rutman > wrote:
>Hi thanks for the reply > >its a deep cycle Gel battery. > >made by Napa Auto parts > > >the only number i see stamped on the battery that might resemble a >model number is " TYPE AGU1" What will happen with a *smart* charger when you use hi current on a gel cell, is it will feed hi current in spurts if you select the AGM, GEL CELL switch position. If you select low current it charges continuously. At say around 2 amperes. How do I know? I measured the f*in thing. That's how I know. It ain't theory, it's the way the thing works. So you can spend $16 at WalMart, and buy the Vector 2 amp smart charger, rated for 2 amperes, and it will first read the state of charge, then begin -forcing- 2 amperes through the battery, and when the battery is up to voltage, indicating full charge, it turns itself off. So go to Wally world, part with the $16, and your problems are over. Model VC080 It looks like a little brick, with no buttons on it, just a cord going to the battery, and another going to a wall outlet. Lg |
#27
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On Thu, 5 May 2005 03:36:23 -0500, "Loren Eggert" >
wrote: >maybe its the alzheimer's kicking in. AC with DC offset >Loren Eggert >BS CompE Purdue University What does your doctor say it is. I don't give a damn what you call it, it's the same ****in thing. Would you like a Bacon lettuce and tomato sandwich or we also have the letuce bacon and tomato sandwich and for a little more money, you can get the tomato bacon and lettuce sandwich. yer ****in nuts. stay at the university. The real world will gobble you up alive. Lg |
#28
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Your battery will like you better if you charge it slowly. 2 amps is better
than 10 amps. No comment on whether DC with an AC component is "pure" DC or not. I do have a little Shumacher charger that I am quite impressed with, and I also have a tiny little "transformer lump" charger that cost a bomb and is specifically designed to charge gel cells. It charges at 14.5 volts until the battery is charged, and then goes to 13.7 volts for long term storage. Judging by it's size I would be very surprised if it can charge at more than half an amp or so. Brian "rutman" > wrote in message ... > sorry guys to butt in, but i am still confused with the original > question./ > > > Should I charge my battery slowly at 2amp over several long hours.. or > charge it fast at 10amp or 15amp? > > > > > > On Tue, 03 May 2005 10:13:35 -0500, Steve > wrote: > >>Mike Romain wrote: >> >>> First off, you should post the type of battery. Marine 'gel' cells are >>> really rare. Lead acid spiral cells like Optima are much more common. >> >> >>Ouch, that one hurt my brain too! :-p > |
#29
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My only experience with gel batteries were 6 volt ones and they had to
be trickle charged. I would only do that until I phoned Napa and asked them about it. If they don't know then I still figure better safe than sorry. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's rutman wrote: > > Hi thanks for the reply > > its a deep cycle Gel battery. > > made by Napa Auto parts > > the only number i see stamped on the battery that might resemble a > model number is " TYPE AGU1" > > On Thu, 05 May 2005 11:02:50 -0400, Mike Romain > > wrote: > > >What brand of battery is it? > > > >Some 'gel' batteries will die very quickly if charged too fast. > > > >Mike > >86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > >88 Cherokee 235 BFG AT's > > > >rutman wrote: > >> > >> sorry guys to butt in, but i am still confused with the original > >> question./ > >> > >> Should I charge my battery slowly at 2amp over several long hours.. or > >> charge it fast at 10amp or 15amp? > >> > >> On Tue, 03 May 2005 10:13:35 -0500, Steve > wrote: > >> > >> >Mike Romain wrote: > >> > > >> >> First off, you should post the type of battery. Marine 'gel' cells are > >> >> really rare. Lead acid spiral cells like Optima are much more common. > >> > > >> > > >> >Ouch, that one hurt my brain too! :-p |
#30
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rutman wrote:
> sorry guys to butt in, but i am still confused with the original > question./ > > > Should I charge my battery slowly at 2amp over several long hours.. or > charge it fast at 10amp or 15amp? In general, slow charging is better for batteries than fast charging. But as has been pointed out, modern automated battery chargers exist specifically for deep-cycle batteries and will apply a charging profile that brings them up quicker than slow charging without harming them. |
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