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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Sealed lead acid batteries
Hi
What is the fastest rate of discharge advisable for a sla battery? Is the terminal voltage a good indication of the condition of a charged battery? Thanks Ted -- Please identify yourself in name or subject in any replies or they will not be opened. |
#2
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Sealed lead acid batteries
Ted Pillinger wrote:
What is the fastest rate of discharge advisable for a sla battery? Your best bet would be to look up the specs on this. The figures vary a fair bit. Is the terminal voltage a good indication of the condition of a charged battery? It's *an* indication, just not a *good* indication. With a known tested battery, once you have a discharge curve outline, it can be used to give a reasonably good indication of where the charge level is. However, and especially if you're going to abuse the battery, as it ages, the curve shape changes and will no longer give you a good indication (till you retest again anyway). If good charge indication is really important in this application, doing something like what's done nowadays with a dynamically determined level (not sure if there's any official terminology for this) would be best. It continually estimates the level going on how much has been taken from the battery, based on the capacity that was determined last time it was fully discharged. Or something along those lines. -- Linux Registered User # 302622 http://counter.li.org |
#3
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Sealed lead acid batteries
In article ,
Ted Pillinger wrote: What is the fastest rate of discharge advisable for a sla battery? How long is a piece of string? You need to check the specs of the actual battery. However, pretty small ones are used in car jump start packs so they can be made to deliver a lot of amps. Is the terminal voltage a good indication of the condition of a charged battery? It can be if the battery is good. But not if it's faulty. To check one properly you need to do a heavy discharge test. Most decent battery suppliers should have an tester for this purpose. -- *If you try to fail, and succeed, which have you done? Dave Plowman London SW To e-mail, change noise into sound. |
#4
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Sealed lead acid batteries
On 3ÔÂ25ÈÕ, ÏÂÎç5ʱ06·Ö, "Ted Pillinger" wrote:
Hi What is the fastest rate of discharge advisable for a sla battery? Is the terminal voltage a good indication of the condition of a charged battery? Thanks Ted -- Please identify yourself in name or subject in any replies or they will not be opened. Do you want access to China's massive pool of electronic manufacturers... but lack the time to contact suppliers, negotiate contracts, arrange shipping or monitor product quality? Don't worry - Let seriouswholesale deal with all that for you. *Check out the huge range of Gadgets, MP3 / MP4 Players, Car DVD / Audio, and Computer Accessories now by visiting the online wholesale catalog at seriouswholesale. com You'll have peace of mind thanks to the seriouswholesale Quality Control, 12-month Warranty on all products, and easy secure payment by credit card through Paypal. Selling on eBay or your own online store? Send products direct from our warehouse to your customers using our unique drop-shipping service. You can profit by selling hundreds of different products, without holding any of your own inventory! Any questions you have will be answered by the seriouswholesale English-speaking customer support team... Their aim is to make your China electronics importing business easier to run than ever before. Welcome to http://www.seriouswholesale.com. seriouswholesale - Buy from the source, profit without the hassle. - 12 Months Warranty - No minimum order restrictions - Drop-shipping with no additional fee - Pay by safely by PayPal seriouswholesale Wholesale Co., Ltd.: Chinas original and best online electronics wholesaler & drop-shipper: seriouswholesale. com |
#5
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Sealed lead acid batteries
On a related note...
Conventional wisdom is that such batteries can be destroyed by a single "full" discharge -- regardless of the rate. This happened to me with the battery pack for a Sony DT-10. I accidentally ran it down all the way, and it would no longer take a charge. |
#6
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Sealed lead acid batteries
On 3ÔÂ25ÈÕ, ÏÂÎç5ʱ06·Ö, "Ted Pillinger" wrote:
Hi What is the fastest rate of discharge advisable for a sla battery? Is the terminal voltage a good indication of the condition of a charged battery? Thanks Ted -- Please identify yourself in name or subject in any replies or they will not be opened. Do you want access to China's massive pool of electronic manufacturers... but lack the time to contact suppliers, negotiate contracts, arrange shipping or monitor product quality? Don't worry - Let seriouswholesale deal with all that for you. *Check out the huge range of Gadgets, MP3 / MP4 Players, Car DVD / Audio, and Computer Accessories now by visiting the online wholesale catalog at seriouswholesale. com You'll have peace of mind thanks to the seriouswholesale Quality Control, 12-month Warranty on all products, and easy secure payment by credit card through Paypal. Selling on eBay or your own online store? Send products direct from our warehouse to your customers using our unique drop-shipping service. You can profit by selling hundreds of different products, without holding any of your own inventory! Any questions you have will be answered by the seriouswholesale English-speaking customer support team... Their aim is to make your China electronics importing business easier to run than ever before. Welcome to http://www.seriouswholesale.com. seriouswholesale - Buy from the source, profit without the hassle. - 12 Months Warranty - No minimum order restrictions - Drop-shipping with no additional fee - Pay by safely by PayPal seriouswholesale Wholesale Co., Ltd.: Chinas original and best online electronics wholesaler & drop-shipper: seriouswholesale. com |
#7
Posted to sci.electronics.repair
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Sealed lead acid batteries
On 3ÔÂ25ÈÕ, ÏÂÎç5ʱ06·Ö, "Ted Pillinger" wrote:
Hi What is the fastest rate of discharge advisable for a sla battery? Is the terminal voltage a good indication of the condition of a charged battery? Thanks Ted -- Please identify yourself in name or subject in any replies or they will not be opened. Do you want access to China's massive pool of electronic manufacturers... but lack the time to contact suppliers, negotiate contracts, arrange shipping or monitor product quality? Don't worry - Let seriouswholesale deal with all that for you. *Check out the huge range of Gadgets, MP3 / MP4 Players, Car DVD / Audio, and Computer Accessories now by visiting the online wholesale catalog at seriouswholesale. com You'll have peace of mind thanks to the seriouswholesale Quality Control, 12-month Warranty on all products, and easy secure payment by credit card through Paypal. Selling on eBay or your own online store? Send products direct from our warehouse to your customers using our unique drop-shipping service. You can profit by selling hundreds of different products, without holding any of your own inventory! Any questions you have will be answered by the seriouswholesale English-speaking customer support team... Their aim is to make your China electronics importing business easier to run than ever before. Welcome to http://www.seriouswholesale.com. seriouswholesale - Buy from the source, profit without the hassle. - 12 Months Warranty - No minimum order restrictions - Drop-shipping with no additional fee - Pay by safely by PayPal seriouswholesale Wholesale Co., Ltd.: Chinas original and best online electronics wholesaler & drop-shipper: seriouswholesale. com |
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