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How do i charge this type of battery? Answered

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This a pic of a similar battery that I picked up at fry except mine is a 12v now how the f do i charge this thing the guys at FRY were about as helpful as a kid with down syndrom working on the assembly line at the cheeto factory.

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12V (author)2009-06-08

you didn't say it's capacity gel cel 2.1ah 200ma for about 12hours (13.5v) 4ah 400ma 6ah 600ma 7.2ah 720ma lead acid (sealed)or (valve regulated lead-acid type) 2.1ah 500ma for about 6hours (13.8-15v) 4ah 1000mA (1A) 6ah 1500ma (1.5A) or 1000ma for 9 hours 7.2ah 1500ma 61/2-7hours or 1000mafor 91/2hours.

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lemonie (author)2007-08-24

Can you monitor current? If it's a lead-acid you can put a fair amount through it with no problem. However, you'd need more than 12V. I don't see vents on this, which isn't right for lead-acid... L

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NachoMahma (author)lemonie2007-08-24

. I think what he has is called a lead "gel cell" (probably a more accurate word/phrase for them, but I'm not much on batteries). I have similar, but larger, batteries in my UPS. Have a "pregnant" one next to my desk, but all it says is "sealed maintenance-free rechargable battery" with a Pb recycling symbol. Also has a 'flush with water at once ... electrolyte (acid)' warning.

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CameronSS (author)NachoMahma2007-08-24

Methinks the term you're looking for is "Sealed Lead-Acid."

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NachoMahma (author)CameronSS2007-08-24

. A quick search of the 'Net tells me the terms are synonymous (or maybe gels are a type of SLA), but Sealed Lead-Acid seems to be more correct (or at least more popular). Thanks. . My pregnant battery is well sealed. It is very swollen, but no leaks. Need to get rid of that thing.

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lemonie (author)NachoMahma2007-08-25

Interesting, but charging always produces hydrogen (and corrosive acid mist) - do the gel types absorb this or (what)? L

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askvictor (author)lemonie2008-01-12

Gel cell and sealed lead acid (SLA) are synonymous. They use a gel as the electrolyte (cf car batteries which use a liquid sulfuric acid solution). Normal charging does not cause electrolysis (hydrogen formation). Over charging, however, does lead (pardon the pun) to this, which is why there are hidden vents in SLA batteries to release the gas. Once this has happened the battery will continue working, though with a reduced capacity due to there being less electrolyte (and it's chemistry altered). There's some good info here:
http://www.jaycar.com.au/images_uploaded/slabatts.pdf

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NachoMahma (author)lemonie2007-08-25

. Not sure. But judging by the heavy-duty case construction of the battery next to my desk, they can handle the pressure. The case is bulging (very badly, almost didn't get it out of the UPS) but intact.

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iathon (author)2007-08-27

So i have a trickle charger any idea?

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smoke (author)iathon2007-08-27

Red is positive, back is negative, hook it up and if it gets to hot or starts to swell shut it down.

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whatsisface (author)2007-08-25

Am I right in thinking that you can't really overdo the amps as long as you have the voltage right? I think that the higher the amperage, the faster the charge(?)

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NachoMahma (author)whatsisface2007-08-25

. No. It is very easy to overcharge a battery. Yes, the more Amps, the faster the charge, but it's not a matter of "if a little will do a little good, then a lot will do a lot of good" - too much current produces excessive heat and gases. . A battery charger keeps the charging current to levels the battery can handle. When you start charging, the voltage will be relatively low. As the battery charges, the charger voltage is increased.

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chooseausername (author)2007-08-24

If it's a 12V lead battery, then, you could use a car battery charger.

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iathon (author)chooseausername2007-08-24

yes it is a 12v lead battery but i heard that it might blow the battery up is there a ohms required or amps required?

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ll.13 (author)iathon2007-08-24

Well I would say Just try it and if it doesn't agree, well, I'm sure you have legs so you can run away. I have the same kind of batteries in my 5M. Candle power torch which is charged pretty much straight from mains, so you can try rigging it up to the mains..

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NachoMahma (author)ll.132007-08-24

> I have the same kind of batteries in my 5M. Candle power torch which is charged pretty much straight from mains, so you can try rigging it up to the mains . NO, NO, NO!!!!!!! Do NOT connect a battery directly to the mains!!!!!!!!! It WILL (not maybe or possibly, but _will_) explode!!!!!! Enough exclamation points and caps? . You may not be able to see it, but somewhere in your torch system there is a AC to DC converter that connects to the battery.

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ll.13 (author)NachoMahma2007-08-25

All in the name of science. (:

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smoke (author)2007-08-24

Personally I would try a automotive trickle charger, usually around 10 bucks and charge at 2 amps.

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Punkguyta (author)2007-08-24

Actually, that does look like a battery out of one of those 1+ mil candle flash lights. Just get a standard switching battery charger (6 or 12 v, if it doesn't switch, it's probably a cheapy and might blow up a battery like this). Just hook it up correctly and if it's a decent charger, it'll charge it. If it's a cheapy cheapy charger, then you might run into problems as some don't have much for charging control.

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