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MF battery types
Cars Modifications Aspects of car modifications (tuning, styling) (uk.rec.cars.modifications)
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#11
 
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Re: MF battery types -
05-19-2004
, 10:02 AM
| Questions (AT) quickwatchsales (DOT) com> wrote in message news:9h5la0hdj7ogutp3o0jid5hos7bhpfekl9 (AT) 4ax (DOT) com... Apparently on date Tue, 18 May 2004 21:35:25 +0100, "Burgerman" burgerman (AT) ntlworld (DOT) com> said: The Yellow ones are more of a problem... Its use is unknown, it could be used in a powerchair like mine and heavily deep cycled daily. Less than a year is the expected life in this situation. On the other hand the same battery used in a reserve power, backup system that lives on permenant float charge can be expected to be fine after 15 years. Burger... Are there any batteries that survive well in a "used from time to time during summer" scenario? All batteries sulphate if they are not FULLY charged. That does not mean overcharged! If its connected to a vehicle then it goes flatter faster because the cars electrics, and electronics pull power out. All batteries will deteriorate like this fast. Some faster than others... A Caravan/boat type sunlight photocell charger should keep up though... |
driver, and it's a pain taking the terminal off.
#12
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Apparently on date Wed, 19 May 2004 00:22:51 +0100, "Burgerman" burgerman (AT) ntlworld (DOT) com> said: Questions (AT) quickwatchsales (DOT) com> wrote in message news:9h5la0hdj7ogutp3o0jid5hos7bhpfekl9 (AT) 4ax (DOT) com... Apparently on date Tue, 18 May 2004 21:35:25 +0100, "Burgerman" burgerman (AT) ntlworld (DOT) com> said: The Yellow ones are more of a problem... Its use is unknown, it could be used in a powerchair like mine and heavily deep cycled daily. Less than a year is the expected life in this situation. On the other hand the same battery used in a reserve power, backup system that lives on permenant float charge can be expected to be fine after 15 years. Burger... Are there any batteries that survive well in a "used from time to time during summer" scenario? All batteries sulphate if they are not FULLY charged. That does not mean overcharged! If its connected to a vehicle then it goes flatter faster because the cars electrics, and electronics pull power out. All batteries will deteriorate like this fast. Some faster than others... A Caravan/boat type sunlight photocell charger should keep up though... A pity. I'm doing that anyway and batteries still die fast compared to a daily driver, and it's a pain taking the terminal off. |
#13
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Apparently on date Tue, 18 May 2004 21:35:25 +0100, "Burgerman" burgerman (AT) ntlworld (DOT) com> said: The Yellow ones are more of a problem... Its use is unknown, it could be used in a powerchair like mine and heavily deep cycled daily. Less than a year is the expected life in this situation. On the other hand the same battery used in a reserve power, backup system that lives on permenant float charge can be expected to be fine after 15 years. Burger... Are there any batteries that survive well in a "used from time to time during summer" scenario? |
#14
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Hello there, I was just wondering, nowadays there are so many different types of maintenance free batteries, what are the advantages/disadvantages of these competing technologies? Calcium, Expanded Metal, etc.etc? how do each of these work? I'm sure Burgerman would know this at the back of his hands. hehehe Thanks guys. |
#15
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All batteries will deteriorate like this fast. Some faster than others... A Caravan/boat type sunlight photocell charger should keep up though... A pity. I'm doing that anyway and batteries still die fast compared to a daily driver, and it's a pain taking the terminal off. |
dashboard toys that plug in the fag lighter?
--
*It sounds like English, but I can't understand a word you're saying.
Dave Plowman dave.sound (AT) argonet (DOT) co.uk London SW 12
RIP Acorn
#16
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Questions (AT) quickwatchsales (DOT) com> wrote in message Apparently on date Wed, 19 May 2004 00:22:51 +0100, "Burgerman" Questions (AT) quickwatchsales (DOT) com> wrote in message The Yellow ones are more of a problem... Its use is unknown, it could used in a powerchair like mine and heavily deep cycled daily. Less year is the expected life in this situation. On the other hand the same battery used in a reserve power, backup system that lives on permenant float charge can be expected to be fine after 15 years. Burger... Are there any batteries that survive well in a "used from time to time during summer" scenario? All batteries sulphate if they are not FULLY charged. That does not mean overcharged! If its connected to a vehicle then it goes flatter faster because the cars electrics, and electronics pull power out. All batteries will deteriorate like this fast. Some faster than others... A Caravan/boat type sunlight photocell charger should keep up though... A pity. I'm doing that anyway and batteries still die fast compared to a daily driver, and it's a pain taking the terminal off. Then you need a better (500ma output?) solar charger? |
which do much the same thing but have seen off batteries here and earned
themselves a reputation for being expensive and no doubt better than the
unregulated type, but not a real solution.
Best I've managed to come up with is to have the smart charger on a timer that
turns on once per day for 15 mins, to simulate a sort of daily drive. Even so,
this has still done batteries in two years, depending on the point where you
come to test it, maybe three summers if it was new early in summer, not quite
sure if it was 2 or 3 last time. Anyway, too quick for my taste when the other
car (was) is still on an original ten year old battery and doesn't get charged.
This battery, I've gone a stage further, the charger comes on once per week for
15 mins and the battery is removed from the car entirely, during the coldest
part of the year and then reconnected with the charger on daily. It's managed a
second year so far, so it's not a worse technique.
I have a solar charger on the other car, it's a good idea when the car is kept
outside but the triumph stays indoors unless it's a sunny day and I plan to
drive it. Can't see a lot of difference between solar volts and charger volts
is going on, maybe it is some subtle effect to do with inductance?
#17
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Apparently on date Wed, 19 May 2004 15:06:41 +0100, "Burgerman" burgerman (AT) ntlworld (DOT) com> said: Questions (AT) quickwatchsales (DOT) com> wrote in message Apparently on date Wed, 19 May 2004 00:22:51 +0100, "Burgerman" Questions (AT) quickwatchsales (DOT) com> wrote in message The Yellow ones are more of a problem... Its use is unknown, it could used in a powerchair like mine and heavily deep cycled daily. Less year is the expected life in this situation. On the other hand the same battery used in a reserve power, backup system that lives on permenant float charge can be expected to be fine after 15 years. Burger... Are there any batteries that survive well in a "used from time to time during summer" scenario? All batteries sulphate if they are not FULLY charged. That does not mean overcharged! If its connected to a vehicle then it goes flatter faster because the cars electrics, and electronics pull power out. All batteries will deteriorate like this fast. Some faster than others... A Caravan/boat type sunlight photocell charger should keep up though... A pity. I'm doing that anyway and batteries still die fast compared to a daily driver, and it's a pain taking the terminal off. Then you need a better (500ma output?) solar charger? Possibly, but then we seem to be getting towards the mains powered chargers which do much the same thing but have seen off batteries here and earned themselves a reputation for being expensive and no doubt better than the unregulated type, but not a real solution. Best I've managed to come up with is to have the smart charger on a timer that turns on once per day for 15 mins, to simulate a sort of daily drive. Even so, this has still done batteries in two years, depending on the point where you come to test it, maybe three summers if it was new early in summer, not quite sure if it was 2 or 3 last time. Anyway, too quick for my taste when the other car (was) is still on an original ten year old battery and doesn't get charged. This battery, I've gone a stage further, the charger comes on once per week for 15 mins and the battery is removed from the car entirely, during the coldest part of the year and then reconnected with the charger on daily. It's managed a second year so far, so it's not a worse technique. I have a solar charger on the other car, it's a good idea when the car is kept outside but the triumph stays indoors unless it's a sunny day and I plan to drive it. Can't see a lot of difference between solar volts and charger volts is going on, maybe it is some subtle effect to do with inductance? |
Your battery needs to be kept at its "float" voiltage 24/7 to give it the
best service life.
This needs a fancy maintainance charger.
Above float voltage causes damage...
Below also causes damage...
#18
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#19
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__ ( o )\_ www.powerchair-review.co.uk |
"Brian Su" <happyguy_spam_sux (AT) microsoft (DOT) com> wrote
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Burgerman, Yeah I knew you had that optima site that's why I wanted to ask you. Anyway just recently one of the battery banks in my office's phone backup system got damanged. Actually, the battery bank is made up of 4 12v 45Ah 450CCA Maintenance Free AC delco batteries. In total they should reach 48v per battery bank. What happened is that one of the battery malfunctioned and dropped to a mere 3.x volts so the charger circuit activated. Of coz the total voltage would never reach 48v because of that single spoilt battery. The result? The entire building floor smell of sulphur for the entire day. Since the smell was there since morning, I reckon it had been overcharging for at least 15 - 20 hours. These are MF batteries. So is that whole battery bank screwed or would replacing just that single battery work? Thanks. |
#20
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By maintainance free does this mean you cannot check the level? Because all that boiling may have lowered it in some cells? |
me off buying another - most can be checked even if it means ripping off a
label, etc.
--
*'ome is where you 'ang your @ *
Dave Plowman dave.sound (AT) argonet (DOT) co.uk London SW 12
RIP Acorn
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