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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Default 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

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Default 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.
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Default 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.

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Default 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.




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Default 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.




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Default 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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Default 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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