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Title: Rotating batteries Post by: Hydros on March 12, 2004, 03:28:38 AM Another thing you want to do is to rotate your batteries. Seems the first and last battery tend to become weaker in time. I suggest to move the outer batteries toward the center, maybe like every 10th charge.
Title: Rotating batteries Post by: LowriderUK on April 26, 2004, 08:13:18 AM Quote Another thing you want to do is to rotate your batteries. Seems the first and last battery tend to become weaker in time. I suggest to move the outer batteries toward the center, maybe like every 10th charge. OK, but in the 'Charging using a fast charger' thread you state..."I used to rotate the batteries, just like your tires. The first and last batteries seem to get the most wear and tear. You might want to move them inward each time. -About every 4-6 chargings is suggested." So which is it, around 4-6 chargings, or 10 chargings? :unsure: Title: Rotating batteries Post by: Hydros on April 26, 2004, 09:12:24 PM Quote Quote Another thing you want to do is to rotate your batteries. Seems the first and last battery tend to become weaker in time. I suggest to move the outer batteries toward the center, maybe like every 10th charge. OK, but in the 'Charging using a fast charger' thread you state..."I used to rotate the batteries, just like your tires. The first and last batteries seem to get the most wear and tear. You might want to move them inward each time. -About every 4-6 chargings is suggested." So which is it, around 4-6 chargings, or 10 chargings? :unsure: It's been about 21 years since I had hydros, and I at times, forget all the details. I would not go longer than 10 chargings, and it becomes a hassle rotating them too often. So let's say (for now, at least). never more than 10, and usually after 4. But if you always fast charge, rotating them more often is suggested, and with slow charges, you can wait a bit longer. It's nice to know someone is really reading my posts. You know I even forgot about rotating my batteries on the car I have now. Old age? Title: Rotating batteries Post by: LowriderUK on April 26, 2004, 10:09:36 PM Quote Good one LowriderUK, !!! It's been about 21 years since I had hydros, and I at times, forget all the details. I would not go longer than 10 chargings, and it becomes a hassle rotating them too often. So let's say (for now, at least). never more than 10, and usually after 4. But if you always fast charge, rotating them more often is suggested, and with slow charges, you can wait a bit longer. It's nice to know someone is really reading my posts. You know I even forgot about rotating my batteries on the car I have now. Old age? Not got a hydro system at the moment, but will probably have 8 batts in two banks of four. So every 6 charges or so, swap batt number 1 and 4 in each bank with batts 2 and 3 in each bank, right? Incidentally, if its been 21 years since you had hydros, what are you rolling in now that would have more than two batteries to require rotating 'em? B) Love this new site, although its a bit like walking around a huge shopping mall ofter closing hours, there no-one about...... hello.....HELLOOO!?! :D Title: Rotating batteries Post by: Hydros on April 27, 2004, 09:57:33 PM Quote Quote It's all good! Ahh Good question, I've got a 85 Regal. Front and back, two pumps, being made for hopping only. I have 8 batteries now, and plan to have a total of 12. I just got the car in November.Not got a hydro system at the moment, but will probably have 8 batts in two banks of four. So every 6 charges or so, swap batt number 1 and 4 in each bank with batts 2 and 3 in each bank, right? Incidentally, if its been 21 years since you had hydros, what are you rolling in now that would have more than two batteries to require rotating 'em? B) Love this new site, although its a bit like walking around a huge shopping mall ofter closing hours, there no-one about...... hello.....HELLOOO!?! :D As for your battery set up, hmm... you might want to consider setting them up in parallel and series. Like this: all eight laid out, and each two batteries are wired to =12 volts, then hook every two in series. Then all eight will =48 volts. This may allow for faster cable connections when you want to charge them. (as I have always charge all of my batteries at the same time wired to = 12 volts). Also, you will have a longer charge if you hit one pump a lot more than the other. You will also have only one ground for a quick disconnect for both pumps. I really can't think of any reason not to wire it like this. Just make sure you run your ground and final hot cables at each of the far end batteries. The other way of four and four would work fine too, but I like to think about stream lining things for any future situations. Yes, you are right about: "every 6 charges or so, swap batt number 1 and 4 in each bank with batts 2 and 3 in each bank". Title: Rotating batteries Post by: LowriderUK on April 27, 2004, 10:52:36 PM Ummm, like this?
Sorry if the diagram makes no sense, my previous install was in car when I bought it and only had two batts! Would you have to disconnect the serial connections between each paired battery set to charge at 12v? Why not just use a 48v charger? (http://images.cardomain.com/member_images/11/web/575000-575999/575728_14.jpg) Title: Rotating batteries Post by: Hydros on April 28, 2004, 12:06:47 AM More like this:
Title: Rotating batteries Post by: Hydros on April 28, 2004, 12:19:37 AM a 48 VDC charger will work. a 24 VDC would be a another choice. A36 VDC would also work, but I would not use it. And a 12 VDC will always work.
I thought I heard of some 18VDC batteries coming out, then a 36 VDC might be an option. Title: Rotating batteries Post by: LowriderUK on April 28, 2004, 07:17:18 AM So how can I charge all of the batteries at once with a 12v charger on a 48v circuit? So I just connect the +'ve to one end and the -'ve to the other, the same as with a 48v charger?
Title: Rotating batteries Post by: Hydros on April 28, 2004, 08:31:17 PM To charge the batteries with a 12 VDC charger, you'll need to hook all the batteries up to = 12 VDC
This is done by connecting all of the positives posts together, and then connecting all the negitive posts to each other. Then connect your charger cables to each of the far end batteries. The thing to remember most of all is that your batteries must be connected to each other to = the volts of the charger. Title: Rotating batteries Post by: LowriderUK on April 28, 2004, 10:49:08 PM So therefore it would be 'easier' to charge with a 48v charger (in the case of the above setup), coz you wouldn't need to 'faff' about changing battery connections, just the -'ve to ground and the +'ve to the battery post feeding the two pumps.
Explain to me again the benefit of the 'parellel/series/parallel' setup above, rather than having two seperate banks connected all in series to give 48v? Sorry, but I if I didn't ask, what would be the point of the forum, eh! :D Title: Rotating batteries Post by: Hydros on April 30, 2004, 02:12:34 AM Yes it would be easier to use a 48 volt charger if you had your pumps only and always wired to = the same
The reason I suggest using the 'parellel/series/parallel' setup above, rather than having two seperate banks connected all in series to give 48v, is something like this: It's like having four large amp batteries. Something like 2000 amps for each 12 volts. Plenty of reserve, plenty of power, plus, it seems they would all get used evenly too. |